Relevant bibliographies by topics / Dye solution

Academic literature on the topic 'Dye solution'

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Published: 10 December 2022
Last updated: 29 January 2023

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Journal articles on the topic "Dye solution"

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Yunus, W. Mahmood bin Mat. "Refractive index of dye solution." Applied Optics 28, no. 20 (October 15, 1989): 4268. http://dx.doi.org/10.1364/ao.28.004268.

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Sukprasong, Saksit, Yongyut Manjit, Apichart Limpichaipanit, and Athipong Ngamjarurojana. "Inner Filter Effect on Fluorescence Dyes Spectra in Methanol Solution." Key Engineering Materials 675-676 (January 2016): 704–7. http://dx.doi.org/10.4028/www.scientific.net/kem.675-676.704.

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This research was conducted to study the inner filter effect on the fluorescence spectra of fluorescence dyes. The concentration effect on all of fluorescent dye solutions showed the same trend in terms of changes in fluorescence intensity spectra. At low concentrations, the fluorescence intensity increased when the concentration of fluorescent dye solution increased. However, at high concentrations, the fluorescence intensity decreased when the concentration of fluorescent dye solution increased. Interestingly, the result of fluorescence spectra in dye solutions showed that the fluorescence intensity maxima in all dye solutions were shifted to a higher wavelength (red-shift) when the concentration of fluorescent dye solution increased. The results of concentration effect on fluorescence intensity and wavelength-shift in dyes solution can be explained by inner filter effect on fluorescent dye solutions.
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Kazak, N. S., A. S. Lugina, E. M. Miklavskaya, A. V. Nadenenko, V. K. Pavlenko, and Yu A. Sannikov. "Quasilongitudinal pumping of dye solution lasers." Journal of Applied Spectroscopy 43, no. 3 (September 1985): 979–83. http://dx.doi.org/10.1007/bf00660431.

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Guo, Lai Na, Isabelle Arnaud, Michèle Petit-Ramel, Robert Gauthier, Christiane Monnet, Pierre LePerchec, and Yves Chevalier. "Solution Behavior of Dye-Surfactant Associations." Journal of Colloid and Interface Science 163, no. 2 (March 1994): 334–46. http://dx.doi.org/10.1006/jcis.1994.1112.

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Baha, Azlina, A. Sharif, and S. Z. Abdullah. "Effects of Gamma Irradiation on Dosimetry Characteristic of Rhizophora apiculata Dye Solution." Applied Mechanics and Materials 446-447 (November 2013): 1069–72. http://dx.doi.org/10.4028/www.scientific.net/amm.446-447.1069.

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The dosimetry characteristic of Rhizophora Apiculata dye solutions with and without 2, 3, 5 - triphenyltetrazolium chloride (TTC) salt to low dose of gamma irradiation up to 100Gy were investigated spectrometrically. The maximum absorbance was peaking at wavelength of 664nm characteristics of red colour. The dose responses at 664nm wavelength were found decreased with increase of gamma irradiation leading to colour bleaching of the dye solution. The dose sensitivity value of dye solution with TTC lower compared to dye solution without TTC. The colour stability of dyes solutions also have been investigated, the absorbance spectra found no significant change after stored in a dark room at room temperature for 2 weeks.
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Shi, Yan, Xisen Wang, Xin Wang, Kristen Carlson, and Zhaohui Li. "Removal of Toluidine Blue and Safranin O from Single and Binary Solutions Using Zeolite." Crystals 11, no. 10 (September 28, 2021): 1181. http://dx.doi.org/10.3390/cryst11101181.

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The studies on dye removal from solutions attracted great attention due to the increased use of color dyes in different fields. However, most of the studies were focused on dye removal from a single solution. In reality, wastewater from the fabric industry could contain mixed dyes. As such, evaluating different dye removal from mixed solutions may have more practical importance. In terms of sorbents evaluated for dye removal, most of them were an organic type generated from agricultural wastes. Clay minerals and zeolites were also studied extensively, because of the vast reserves, inexpensive material cost, larger specific surface area (SSA) and high cation exchange capacity (CEC). However, evaluating the factors controlling the dye removal from mixed dye solutions was limited. In this study, the removal of cationic dyes safranin O (SO) and toluidine blue (TB) by clinoptilolite zeolite (ZEO) was evaluated under single and binary systems. The results showed that removal of TB was preferred over SO by approximately a 2:1 ratio. The counterion Cl− sorption from mixed dye solution helped the formation of mixed dye aggregates on mineral surfaces. Molecular dynamic simulation confirmed the multilayer mixed dye formation on ZEO under high loading levels.
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Rahman, M. M., M. A. Hasnat, and Kazuaki Sawada. "Degradation of Commercial Textile Dye By Fenton's Reagent Under Xenon Beam Irradiation in Aqueous Medium." Journal of Scientific Research 1, no. 1 (December 25, 2008): 108–20. http://dx.doi.org/10.3329/jsr.v1i1.1059.

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Degradation of commercial textile dye named Malachite green (MG) has been investigated by Fenton reagent under xenon beam irradiation (1501~1532 lux, λ ≤ 320 nm) in an aqueous solution. The degradation process was initiated by the photolysis of Fe(III)-hydroxyl species, and accelerated by xenon beam irradiation, due to enhance photolysis of Fe(III) species, which enhances the regeneration of Fe(II) with concomitant production of hydroxyl free radicals. Influences of various experimental parameters, such as the concentration of H2O2, Fe (III), xenon irradiation source, and pH of the experimental solutions on the initial rate and photo-degradation extent of the MG dye degradation were assessed and optimized. Although the initial rate of degradation was not affected by the initial MG concentration, it was affected by the concentration of Fenton reagents [Fe(III) and H2O2 solution], pH of the experimental solutions, and the intensity of the xenon beam. A significant enhancement of the initial rate and extent of degradation of MG dye was observed at solution pH of ~3.1 under xenon beam radiation. Complete degradation of MG dye (>99.5 %) was achieved by xenon beam/Fenton’s reagent process in aqueous solution (pH, 3.1).  Keywords: Malachite green; Organic dye, Dye mineralization, Fenton reagents, Xenon radiation. ©2009 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved.DOI: 10.3329/jsr.v1i1.1059Â
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Fujiwara, Hideki, and Keiji Sasaki. "Lasing of a Microsphere in Dye Solution." Japanese Journal of Applied Physics 38, Part 1, No. 9A (September 15, 1999): 5101–4. http://dx.doi.org/10.1143/jjap.38.5101.

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Bergbreiter, David E., M. D. Hein, and K. J. Huang. "Azo dye stereoisomerization at polyethylene-solution interfaces." Macromolecules 22, no. 12 (December 1989): 4648–50. http://dx.doi.org/10.1021/ma00202a046.

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Perkowski, J., and J. Mayer. "Gamma radiolysis of anthraquinone dye aqueous solution." Journal of Radioanalytical and Nuclear Chemistry Articles 132, no. 2 (August 1989): 269–80. http://dx.doi.org/10.1007/bf02136086.

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Dissertations / Theses on the topic "Dye solution"

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Gassama, Edrissa. "A Model of the Dye-Sensitized Solar Cell: Solution Via Matched Asymptotic Expansion." University of Akron / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=akron1408058509.

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Rahman, Mohammed. "A performance and energy evaluation of a dye drawn forward osmosis (FO) system for the textile industry." Thesis, Cape Peninsula University of Technology, 2020. http://hdl.handle.net/20.500.11838/3068.

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Thesis (MEng (Chemical Engineering))--Cape Peninsula University of Technology, 2020
Continuous growth in the world population has raised significant fears with regards to the sustainability of energy and water resources. Globally, water is an indispensable resource as it is essential for the sustenance of human, animal and plant life. Water is essential for all forms of life and plays a pivotal role in economic growth. The textile industry is one of the greatest consumers of water, it is, therefore, necessary to effectively treat the large amounts of wastewater before discharge to the environment. It is estimated that annually, more than 700,000-tonnes of textile wastewater is produced by the dyeing industry. Textile wastewater is generally characterised by electrolytes, suspended solids, mineral oils and multiple textile dyes, and has therefore been classified as one of the most polluting wastewaters. These dyes are toxic and, in most cases, are not biodegradable. The presence of very small amounts (i.e. < 1 ppm) of dyes in water has aesthetic impacts and is thus undesirable. It is, therefore, necessary to treat textile wastewater before discharging. Currently, membrane technology is widely used for wastewater treatment, as well as water purification. Forward osmosis (FO) is a promising technology for both these applications. FO is characterised by the flow of water through a semipermeable membrane from a feed solution (FS) characterised by the low solute concentration or low osmotic pressure (OP) to a draw solution (DS) characterised by the high solute concentration or high OP, due to the OP gradient across the membrane. The FO process eliminates the need for high hydraulic pressure, as required in traditional membrane technologies, and also has low fouling tendencies. Furthermore, FO has the advantage of lower energy requirements and membrane replacement costs. However, there are still many disadvantages such as reverse solute flux (RSF), membrane fouling, and concentration polarisation (CP) amongst others that still need to be addressed. Therefore, more research needs to be done in light of these limitations to better understand and mitigate these limitations to increase the effectiveness and efficiency of the FO process. This study aimed to evaluate a dye-driven FO system for the reclamation of water from textile wastewater and synthetic brackish water (BW5) by investigating the effects of membrane orientation, system flowrate, change in DS, and membrane fouling on the FO systems performance and energy consumption. The FS used was BW5 with sodium chloride (NaCl) content of 5 g/L whereas Reactive Black 5 (i.e. a reactive dye) and Maxilon Blue GRL (i.e. a basic dye) dyes were used as a DS, respectively. The membrane utilised was a cellulose triacetate (CTA) membrane and was tested in FO mode and pressure retarded osmosis (PRO) mode whilst the system flowrate was adjusted to 400, 500 and 600 mL/min, respectively. Experiments were performed using a bench-scale FO setup which comprised of an FO membrane cell, a double-head variable speed peristaltic pump, a digital scale, two reservoirs for the FS and DS, respectively, a digital multiparameter meter and a digital electrical multimeter to measure system energy consumption. Each experiment comprised of six steps: baseline 1 (membrane control), main experiment (dye-driven FO experiment), baseline 2 (membrane control repeat), membrane cleaning, membrane integrity (membrane damage dye identification) and membrane cleaning (preparation for next experiment). The baseline 1 and baseline 2 experiments operated for 3 h whilst each membrane cleaning procedure operated for 30 min. The main experiments operated for 5 h in the FO mode and 4 h in PRO mode whilst the membrane integrity experiments operated until a minimum of 10 mL water was recovered. Results showed that the PRO mode achieved both higher forward flux (𝐽𝑤) (i.e. 8.87, 8.71 and 9.13 L/m2.h for flowrates of 400, 500 and 600 ml/min) and water recovery (𝑅𝑒) rates compared to FO mode (i.e. 6.60, 6.88 and 7.58 L/m2.h for flowrates of 400, 500 and 600 ml/min). The variation of flowrates had little to no influence on the 𝐽𝑤, 𝐽𝑠 and 𝑅𝑒 of the system. The system consumed less energy in PRO mode (i.e. 381 kWh/m3 average consumption for all three flowrates) than FO mode (i.e. 417 kWh/m3 average consumption for all three flowrates). It was also observed that at a higher DS 𝑂𝑃, the system consumed less energy. Therefore, selecting an optimum initial 𝑂𝑃 is essential for a FO process to minimise the pumping energy. Furthermore, a change in DS from Reactive Black 5 dye to Maxilon Blue GRL dye had no significant impact on the system performance and energy consumption. In this study, no significant membrane fouling was observed, however, minute traces of fouling in the form of foreign functional groups could be observed in the attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR) spectrums of the used membranes. Additionally, the observation of negligible changes in baseline 2 (membrane control) Re and Jw results suggested the possible occurrence of membrane fouling during the main experiment (dye-driven FO system).
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Yousef, Narin. "Solution-based and flame spray pyrolysis synthesis of cupric oxide nanostructures and their potential application in dye-sensitized solar cells." Thesis, Linköpings universitet, Institutionen för fysik, kemi och biologi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-119329.

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The dye sensitized solar cell (DSSC) is a promising low-cost technology alternative to conventional solar cell in certain applications. A DSSC is a photo-electrochemical photovoltaic device, mainly composed of a working electrode, a dye sensitized semiconductor layer, an electrolyte and a counter electrode. Sunlight excites the dye, producing electrons and holes that can be transported by the semiconductor and electrolyte to the external circuit, converting the sunlight into an electrical current. A material that could be useful for DSSCs is the nanoscale cupric oxide, which can act as a p-type semiconductor and has interesting properties such as low thermal emittance and relatively good electrical properties. The goal of this project was to synthesize and characterize CuO nanoparticles using three different methods and look into each products potential use and efficiency in DSSCs. The particles were synthesized using two different solution based chemical precipitation methods and a flame spray pyrolysis method, yielding nanostructures with different compositions, structures and sizes ranging from ~20 to 1000 nm. The nanoparticle powder synthesized by the flame spray pyrolysis route was tested as semiconductor layer in the working electrode of the DSSC. Current-voltage measurements presented low solar conversion efficiencies with a reversed current, meaning that the cupric oxide cells did not work in a desirable way. Further studies of the cupric oxide synthesis and its suitability in DSSCs are needed to increases the future possibilities for gaining well working p-type DSSCs with higher efficiencies.
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Petersson, Jonas. "Ultrafast, Non-Equilibrium Electron Transfer Reactions of Molecular Complexes in Solution." Doctoral thesis, Uppsala universitet, Fysikalisk kemi, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-235461.

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Photoinduced electron transfer is a fundamentally interesting process; it occurs everywhere in the natural world. Studies on electron transfer shed light on questions about the interaction between molecules and how the dynamics of these can be utilized to steer the electron transfer processes to achieve a desired goal. The goal may be to get electrons to the electrode of a solar cell, or to make the electrons form an energy rich fuel such as hydrogen, and it may also be an input or output for molecular switches. The importance of electron transfer reactions will be highlighted in this thesis, however, the main motivation is to gain a better understanding of the fundamental processes that affect the rate and direction of the electron transfer. A study of photoinduced electron transfer (ET) in a series of metallophorphyrin/bipyridinium complexes in aqueous solution provided fresh insight concerning the intimate relationship between vibrational relaxation and electron transfer. The forward electron transfer from porphyrin to bipyridinium as well as the following back electron transfer to the ground state could be observed by femtosecond transient absorption spectroscopy. Both the reactant and the product states of the ET processes were vibrationally unrelaxed, in contrary to what is assumed for most expressions of the ET rates. This could be understood from the observation of unrelaxed ground states. The excess energy given by the initial excitation of the porphyrin does not relax completely during the two steps of electron transfer. This is an unusual observation, not reported in the literature prior the studies presented in this thesis. This study also gave the first clear evidence of electronically excited radical pairs formed as products of intramolecular electron transfer. Signs of electronically excited radical pairs were seen in transient spectra, and were further verified by the observation that the rates followed a Marcus normal region behavior for all excitation wavelengths, despite the relatively large excess energy of the second excited state. This thesis also concerns electron transfer in solar cell dyes and mixed valence complexes. In the ruthenium polypyridyl complex Ru(dcb)2(NCS)2, where dcb = 4,4’-dicarboxy-2,2’-bipyridine, inter-ligand electron transfer (ILET) in the 3MLCT state was followed by means of femtosecond transient absorption anisotropy that was probed in the mid-IR region. Unexpectedly, ILET was not observed because electron density was localized on the same bpy during the time-window allowed by the rotational lifetime.
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Josefsson, Ida. "Simulations of a Ruthenium Complex and the Iodide/Triiodide Redox Couple in Aqueous Solution: Solvation and Electronic Structure." Thesis, Uppsala University, Department of Physics and Astronomy, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-126677.

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In dye-sensitized solar cells, the functions of light absorption and charge transport are separated. A photosensitive ruthenium-polypyridine dye in the cell absorbs light, injects an electron to a semiconductor and is then regenerated by a redox couple, typically iodide/triiodide. Quantum chemical calculations of the electronic structure of triiodide have been carried out with the restricted active space SCF method, including spin-orbit coupling, and with density functional theory. It was shown that the difference in charge density between the terminal and central atoms results in a splitting of the core levels. The calculations gave a value of the splitting of 0.8 - 1.0 eV for the 3d and 4d levels. Experimentally, the electronic structure has been investigated with photoelectronspectroscopy. The measured terminal/center splitting is 1.1 eV.The spin-orbit interaction of the 4d levels of triiodide has also been calculated. The splitting was determined to be 1.6 eV. The experimental value is 1.7 eV. An assignment of the peaks in the computed spectrum of triiodide was made and the features of the experimental spectrum have beenidentied.The theoretical valence spectrum of triiodide has been computed and assigned. The results can be used in the analysis of photoelectron spectra of the molecule. Information about the electronic structure of the redox couple can help in the understanding of the electron transfer processes and forfurther development of the solar cells.  Furthermore, the solvation structure of the prototype dye, the tris(bipyridine)ruthenium(II) complex, in water and its interaction with iodide and chloride has been studied by means of molecular dynamics simulations. The trajectory analysis showed that the water molecules in the first solvation shell form a chain in between the bipyridine ligands. It was found that the iodide ions are more likely than chloride to enter between the ligands, which can be important for the electron transfer processin the solar cell.

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Charbonneau, Cecile. "Aqueous solution synthesis of nanocrystalline TiO2 powders: kinetics, characterization and application to fabrication of dye-sensitized solar cell photoanodes." Thesis, McGill University, 2011. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=103625.

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The scope of this thesis is the aqueous synthesis and characterization of titanium dioxide nanostructured powders for the fabrication of thin film photoanodes used in DSC devices. The development and study of this novel process is approached from the standpoint of determining the relationship between the hydrolytic behaviour of isothermally treated titanium tetrachloride aqueous solutions (speciation and kinetics of conversion of Ti(IV) into TiO2(s)) and the properties of the resultant TiO2 products. From an application standpoint, the aqueous synthesized nanocrystalline TiO2 material is studied for the formulation of screen-printing pastes used in the fabrication of mesoporous photoanodes and resultant dye-sensitized solar cell (DSC) performance. The synthesis of TiO2 nanostructured powders by forced hydrolysis of aqueous Ti(IV) chloride solutions is described in terms of precipitation kinetics and nucleation and growth mechanism over the temperature range 70-90 °C and Ti(IV) concentration 0.2-1.5 M. Several techniques are used to characterize the resultant solid products, among which are XRD, FEG-SEM/FEG-TEM, BET surface area, TGA, FT-IR, and EDS analyses. Via appropriate selection of conditions, the aqueous synthesis process is shown that can lead to the preferential production of nanostructured rutile powder with unique self-assembled nanofibre (100 nm – 3 µm) spheroidal particles or colloids made of well dispersed 4-8 nm crystallites with anatase as the major crystalline phase (85 wt.%). These results are explained and discussed based on the effect of various process parameters (T, agitation), but most importantly based on the pronounced effect of the initial concentration of the TiCl4 aqueous solution on the speciation of the solution and related kinetics of the hydrolysis reaction. When compared to benchmark products such as the P25 TiO2 from Degussa (50 m2/g, 30 nm average crystallite size, very little to no surface -OH/-OH2, and 3.15 eV band gap), the two types of aqueous-synthesized materials are found to possess a high specific surface area, with 80-120 m2/g for the rutile powders and 250-350 m2/g for the anatase powders, enhanced surface hydroxylation, and larger band gap (3.37 eV) in the case of the anatase nanopowder. These materials are shown that can be used for the fabrication of thin film photoanodes prepared by the screen-printing method either separately (i.e. anatase) or as hybrid (anatase-rutile) with the latter being superior in terms of photovoltaic performance. Finally, the direct preparation of paste without drying of the nanocolloids is demonstrated.
Cette étude porte sur la synthèse en milieu aqueux de particules nano-structurées de dioxide de titane utilisées pour la fabrication de photoanodes, une composante des cellules photovoltaïques à pigments colorés (DSCs). Le développement et l'étude de ce nouveau procédé de synthèse est abordé de façon à déterminer la relation existante entre le comportement hydrolytique de solutions aqueuses de tetrachlorure de titane traitées de manière isothermique (spéciation et cinétique de conversion de Ti(IV) en TiO2(s)) et les propriétés des produits de TiO2 résultant. D'un point de vue pratique, le produit de TiO2 nanocristallin synthétisé en milieu aqueux est examiné pour la formulation de pâtes à imprimer utilisées dans le procédé de fabrication de photoanodes mésoporeuses; l'impact de ce matériau sur l'efficacité des cellules photovoltaïques à colorant est également considéré. La synthèse de poudres de TiO2 nano-structurées, effectuée par hydrolyse de solutions aqueuses de TiCl4, est décrite d'un point de vue de la cinétique de précipitation et des mécanismes de nucléation et de croissance des particules de TiO2, sur des intervalles de température et de concentration variant respectivement de 70 à 90 °C et de 0.2 à 1.5 M. Plusieurs techniques sont utilisées afin de caractériser les produits solides, parmi lesquels la DRX, le MEB et le MET, les spectroscopies FT-IR et EDS, et des mesures d'aire de surface BET et de thermogravimétrie. Il est montré qu'en choisissant les conditions expérimentales de manière appropriée, le procédé de synthèse en milieu aqueux mène à la production de poudres nano-structurées de rutile composées de particules sphéroïdales dont la forme résulte de la croissance radiale de nanofibres (de 100 nm à 3 µm) ou bien de colloïdes contenant des nano-cristaux de 4 à 8 nm dont la principale phase cristalline est l'anatase (85 % m/m). Ces résultats sont expliqués et commentés sur la base des effets induits par les paramètres expérimentaux (T, agitation) et plus particulièrement l'effet prononcé de la concentration de la solution aqueuse de TiCl4 sur la nature des espèces en solution et la cinétique associée à la réaction d'hydrolyse. Si l'on compare les matériaux synthétisés en milieu aqueux avec des produits standards commerciaux tels que la poudre de TiO2 P25 de Degussa (50 m2/g, 30 nm de taille moyenne de particules, présence faible voire nulle de groupes de surface -OH/-OH2 et un band gap de 3.15 eV), ceux-ci sont caractérisés avec une aire de surface plus importante, 80-120 m2/g pour les poudres de rutile et 250-350 m2/g pour les poudres d'anatase, un taux d'hydroxylation de surface plus élevé et un band gap plus large dans le cas de l'anatase (3.37 eV). Il est montré que ces matériaux, plus précisément la poudre d'anatase seule ou bien une poudre hybride d'anatase et de rutile, peuvent être utilisés afin de fabriquer des photoanodes préparées par méthode d'impression, la deuxième poudre ayant montré une qualité supérieure en termes de performance photovoltaïque. Enfin, la préparation de pâtes à imprimer directement à partir de nanocolloides de TiO2, sans avoir à recourir à l'extraction et au séchage des poudres, est décrite.
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Fan, Jiandong. "Solution Growth and Functional Properties of Vertically Aligned ZnO Nanowires." Doctoral thesis, Universitat de Barcelona, 2013. http://hdl.handle.net/10803/120578.

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This dissertation has focused on three main topics: (1) Synthesis and characterization of ZnO:Cl NWs; (2) Hetero and homo nanostructures based on ZnO:Cl NWs for efficient PEC cells; (3) Photovoltaic performance of DSCs based on ZnO NWs. (1) Vertically aligned single-crystal and chlorine-doped ZnO NWs can be grown by a low-cost, high-yield and seed-free electrochemical route with controlled morphology, structural and optoelectronic properties. The carrier concentration of such ZnO:Cl NWs could be tuned in the range between 5× 1017 and 4×1020 cm-3 by varying the Cl doping concentration. Besides, intrinsic ZnO NWs with various lengths of 6-12 μm and diameters of 40-120 nm can also be obtained by hydrothermal deposition for the application in DSCs. (2) Vertically aligned core@shell ZnO:Cl@ZnO homostructures and ZnO:Cl@ZnS and ZnO:Cl@TiO2 heterostructures NWs can be obtained by electrodeposition and/or SILAR two-step process. The PEC properties of these NWs can be highly enhanced up to a factor 5 with the presence of these shell layers. The enhancement factor depends on the shell thickness. These performances are associated with the improvement of the photogenerated charge carrier separation and surface to neutral inner part transfer capability achieved when increasing the space charge area within the NWs with a built-in electric field introduced by the doping profile. (3) We have employed [Co(bpy)3]2+/3+ redox couple as electrolyte in ZnO NWs-based DSCs. A direct comparison of the performance of [Co(bpy)3]2+/3+ and I−/I3− redox couples demonstrated the higher suitability of the cobalt complex, both in terms of a significantly improved Voc (Delta/Voc~200 mV) and a increased photocurrent (Delta/Jsc ~10%). The post-annealing of the NWs in argon allowed further improving the power conversion efficiency with a value of 30% compared to air. The improved efficiency was dominated by significantly higher photocurrents (Delta/Jsc~50%) measured from Ar-DSCs when compared with Air-DSCs.
Esta tesis se ha centrado en tres temas principales: (1) Síntesis y caracterización de NHs de ZnO:Cl; (2) Celdas PEC basadas en hetero y homo nanoestructuras obtenidas a partir de NHs de ZnO:Cl ; (3) DSCs basadas en NHs de ZnO. (1) NHs monocristalinos de ZnO, alineados verticalmente y dopados con cloro fueron sintetizados mediante un método electroquímico de baje coste, alto rendimiento y sin necesidad de semillas. Los resultados demuestran que la concentración de portadores de carga en estos NHs de ZnO:Cl puede ser controlada en un rango entre 5×1017 y 4×1020 cm-3. Además, NHs de ZnO intrínsecos de varias longitudes, entre 6 μm y 12 μm, pueden ser obtenidos por deposición hidrotérmica para aplicación en celdas solares sensibilizadas por colorante (DSCs). (2) Homoestructuras ZnO:Cl@ZnO y heteroestructuras ZnO:Cl@ZnS y ZnO:Cl@TiO2 verticalmente alineadas pueden ser obtenidas mediante electrodeposición y/o un proceso SILAR de dos pasos. Las propiedades PEC de estos NHs pueden ser altamente mejoradas hasta un factor 5 con la presencia de estas capas. El factor de mejora depende del grosor de la capa. La mejora en los rendimientos está asociada con la mayor generación de portadores de carga y la optimización de su transferencia a partir del incremento en el área de carga espacial debido al perfil dopante. (3) Hemos empleado la pareja redox [Co(bpy)3]2+/3+ como electrolito en DSCs basadas en NHs de ZnO. Una comparación directa del rendimiento de las parejas redox [Co(bpy)3]2+/3+ y I−/I3– demostró que el complejo de cobalto es más adecuado, tanto en términos de una significativa mejora en el Voc (Delta/Voc~200 mV) como en un mayor fotocorriente (Delta/Jsc~10%). El posterior sinterizado de los NHs en argón permitió una mejora del 30% en la eficiencia de conversión de luz en energía eléctrica. La mejora del rendimiento fotovoltaico fue atribuído a la incorporación de vacantes de oxígeno durante el sinterizado de los NHs en argón.
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Choi, Kit-hing. "The bleaching and dyeing industry in Hong Kong : environmental problems and some solutions /." Hong Kong : University of Hong Kong, 1997. http://sunzi.lib.hku.hk/hkuto/record.jsp?B18735988.

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MAGADALENA, CARINA P. "Síntese de zeólitas de cinzas de carvão modificada por surfactante e aplicação na remoção de ácido laranja 8 de solução aquosa: estudo em leito móvel, coluna de leito fixo e avaliação ecotoxicológica." reponame:Repositório Institucional do IPEN, 2015. http://repositorio.ipen.br:8080/xmlui/handle/123456789/23651.

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Tese (Doutorado em Tecnologia Nuclear)
IPEN/T
Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP
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Abouamer, Karima Massaud. "Application of natural dyes in textile industry and the treatment of dye solutions using electrolytic techniques." Thesis, Brunel University, 2008. http://bura.brunel.ac.uk/handle/2438/5088.

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Anodic oxidation of a commercial dye, methylene blue (MB), from aqueous solutions using an electrochemical cell is reported. Data are provided on the effects of eight different types of supporting electrolytes, concentration of electrolytes, initial dye concentration, current and electrolytic time on the percentage removal of methylene blue. Anodic oxidation was found to be effective in achieving the removal of methylene blue from aqueous solutions. The optimised electrolytic conditions, for the removal of methylene blue (MB), were applied to the removal of azure A (AA), azure B (AB), azure C (AC), toluidine blue 0 (TBO), new methylene blue (NMB), dimethyl methylene blue (DMMB), thionine (TH), methylene green (MG), methyl violet (MV), Nile blue (NB), neutral red (NR), acridine orange (AO) and resorufin (RS) from aqueous solutions containing sodium chloride. Results indicated that between 84 to 100% of each dye of phenothiazine was removed during 60 minutes of electrolysis. The percentage removals for the phenothiazine dyes followed the following decreasing order: (MG ≈ MV) > (DMMB ≈ AA) > (AB ≈ AC ≈ NMB) > TBO > TH. However, the azine, acridine and oxazine dyes showed between 98 to 99% colour removal and the following decreasing order: NB ≈ NR > AO ≈ RS. Strongly electron withdrawing substituents such as nitro group or carbonyl group increases the degradation of the phenothiazine chromophore, whereas the electron donating groups such as amino and alkyl amino groups decrease the degradation. Anodic oxidation studies were extended to the destruction of eight permitted food colours, with azo and triarylmethane chromophore, from aqueous solution containing either sodium chloride or sodium sulphate as a supporting electrolyte. Again, sodium chloride was found to be the best supporting electrolyte and between 97 to 100% colour removal was achieved after 60 minutes of electrolysis. The percentage removal for the single azo based colourants followed the following increasing order: carmoisine > sunset yellow FCF > amaranth > ponceau 411 > tartrazine. However, the binary and ternary mixtures of food colour showed the following increasing order: blue > green > yellow food colours. The extractions and applications of 54 different types of natural dyes (53 from plants and one from animal origin) are evaluated using simple techniques. The extracted natural dyes were applied in dyeing three types of textile fabrics viz: a) paj silk, b) brushed cotton twill and c) crystallized shimmering satin. The effects of two eco-friendly mordants (alum and iron) on the dyeing process were compared with the dyeing process without mordants. The colour fastness to wash and light (both natural and artificial sun light) of these natural dyes were also assessed. The results showed that out of the 54 dyestuffs studied, 32 plants are potentially able to produce marketable natural dyes. These dyes produced good colour and met minimal performance standards for colour fastness to light and washing. The addition of mordants generally increased the fastness properties. Silk gave the best performance of dyeing uptake and stability. Cotton gave the poorest fastness properties. The overall results showed that, considering molecular associations, the fastness properties were of the order: anthraquinones and tannins> indigoid > flavones> flavonols > flavanols> carotenoids> anthocyanins. Anodic oxidation studies were extended to the destruction of ten natural dyes from aqueous solutions containing either sodium chloride or sodium sulphate as a supporting electrolyte. Anodic oxidation was effective in achieving the removal of green tea (35%), spinach (69%), Langdale yellow and turmeric (95%), carmine, saffron, henna (97%), beetroot, karkade and sumac (98%). However, TOC measurements and the UV analyses indicated that some organic intermediate compounds were formed in the presence of sodium chloride.
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Books on the topic "Dye solution"

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Counseling toward solutions: A practical solution-focused program for working with students, teachers, and parents. 2nd ed. San Francisco, CA: Jossey-Bass, 2008.

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Counseling toward solutions: A practical solution-focused program for working with students, teachers, and parents. West Nyack, N.Y: Center for Applied Research in Education, 1995.

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An introduction to aqueous electrolyte solutions. Hoboken, N.J: John Wiley, 2007.

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OMT: Solution des exercices. Paris: Masson, 1996.

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Walkington, William G. Die casting defects: Causes and solutions. Rosemont, Ill: North American Die Casting Association, 1997.

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Loen, Raymond O. Superior supervision: The 10% solution. New York: Lexington Books, 1994.

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Bachmann, Otto. Exercices avec solutions. Lausanne: Presses Polytechniques Romandes, 1986.

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S, Easterby J., ed. Buffer solutions. Oxford: IRL Press at Oxford University Press, 1996.

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Management solutions. [Saranac Lake, N.Y.]: [Periodicals Division of the American Management Association], 1986.

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Francine, Gélinas, and Bernard Michel 1948-, eds. Contrôle de gestion: Solutions. 2nd ed. Chicoutimi, Qué: Morin, 1985.

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Book chapters on the topic "Dye solution"

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Zade, Anil B., and Kailash N. Munshi. "Spectrophotometric Studies on Some Dye-Surfactant Complexes." In Surfactants in Solution, 713–24. Boston, MA: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4615-7981-6_13.

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Mishra, B. K., P. K. Mishra, L. Panda, and G. B. Behera. "Incorporation of Triphenylmethane Dye Cations into Surfactant Micelles." In Surfactants in Solution, 253–60. Boston, MA: Springer US, 1989. http://dx.doi.org/10.1007/978-1-4613-0839-3_19.

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Zainudin, Nur Syamimi, Mohamad Hadzri Yaacob, and Noor Zuhartini Md Muslim. "Stability Studies of Reactive Black 5 (RB5) Dye Standard Solution in Various Conditions Using UV–VIS Spectrophotometry." In From Sources to Solution, 29–32. Singapore: Springer Singapore, 2013. http://dx.doi.org/10.1007/978-981-4560-70-2_6.

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Zander, Christoph, and Karl Heinz Drexhage. "Cooling of a Dye Solution by Anti-Stokes Fluorescence." In Advances in Photochemistry, 59–78. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470133514.ch2.

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Yaacob, Mohamad Hadzri, Nursyamimi Zainudin, and Noor Zuhartini Md Muslim. "Cathodic Stripping Voltammetry (CSV) Analysis of Reactive Black 5 (RB5) Dye Using Hanging Mercury Electrode (HMDE) in Basic Medium." In From Sources to Solution, 33–36. Singapore: Springer Singapore, 2013. http://dx.doi.org/10.1007/978-981-4560-70-2_7.

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Sharma, Mahima, Kannikka Behl, Subhasha Nigam, and Monika Joshi. "GO Nanosheets for Solar Assisted Dye Degradation in Aqueous Solution." In Springer Proceedings in Physics, 81–87. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-97604-4_14.

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Bennekrouf, Fatima Zohra, Fatima Ouadjenia, and Réda Marouf. "Removal of Disperse Dye from Aqueous Solution by Bottom Ash." In Recent Advances in Environmental Science from the Euro-Mediterranean and Surrounding Regions (2nd Edition), 39–43. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-51210-1_7.

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Uddin, Fahim, Rafia Azmat, and Tehseen Ahmed. "Spectral Studies of Solar Radiation Induced Dye Decoloration in Aqueous Solution." In Chemistry for Sustainable Development, 419–31. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-90-481-8650-1_27.

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Baluyan, T. G., A. A. Novakova, Yu B. Mandzhieva, and V. Yu Karaulov. "PNIPA Microgel and Alcian Blue Dye Aqueous Solution Interaction (Microscopic Investigation)." In Springer Proceedings in Physics, 41–52. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-46601-9_6.

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Saha, Bibek, Animesh Debnath, and Biswajit Saha. "Evaluation of Fe–Mn–Zr Trimetal Oxide/Polyaniline Nanocomposite as Potential Adsorbent for Abatement of Toxic Dye from Aqueous Solution." In Polymer Technology in Dye-containing Wastewater, 15–37. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-1516-1_2.

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Conference papers on the topic "Dye solution"

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Saito, Mitsunori, Kohei Sakiyama, Ryosuke Mochizuki, and Kenji Ohashi. "Polymer composites containing photochromic dye solution." In SPIE Photonics Europe, edited by Paul L. Heremans, Reinder Coehoorn, and Chihaya Adachi. SPIE, 2010. http://dx.doi.org/10.1117/12.853769.

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Davidson, M. D., H. J. van Staveren, C. Snoek, and A. Donszelmann. "Reflections From A Dynamic Grating In A Dye Solution." In 1988 International Congress on Optical Science and Engineering, edited by Gerald Roosen. SPIE, 1989. http://dx.doi.org/10.1117/12.949988.

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Yavuz, Yusuf, Reza Shahbazi, A. Savaş Koparal, and Ülker Bakir Öğütveren. "BR29 DYE REMOVAL FROM MODEL SOLUTION BY ALUMINUM ELECTROCOAGULATION." In 23rd International Academic Conference, Venice. International Institute of Social and Economic Sciences, 2016. http://dx.doi.org/10.20472/iac.2016.023.099.

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Blair, Steven M., Azad Siahmakoun, and Bruce Allison. "Self-referenced holographic interferometer in a rigid dye solution." In Optical Engineering Midwest 1992, edited by Robert J. Heaston. SPIE, 1992. http://dx.doi.org/10.1117/12.140955.

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Xu, Yang, Guangyin Lei, Annette C. Booker, Katherine A. Linares, Dara L. Fleming, Kathleen Meehan, Guo-Quan Lu, Nancy G. Love, and Brian J. Love. "Maximizing dye fluorescence via incorporation of metallic nanoparticles in solution." In Optics East, edited by Linda A. Smith and Daniel Sobek. SPIE, 2004. http://dx.doi.org/10.1117/12.571309.

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Hoa, D. Q., N. T. H. Lien, C. V. Ha, T. H. Nhung, and P. Long. "Optical Properties of Nano-Spherical Gold Doped Dye Solution Hybrid." In MALAYSIA ANNUAL PHYSICS CONFERENCE 2010 (PERFIK-2010). AIP, 2011. http://dx.doi.org/10.1063/1.3574015.

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Saito, Mitsunori, Tatsuya Nishimura, Kohei Sakiyama, and Michinori Nakagawa. "Diffusion of dye solution in the intermolecular nanostructure of polydimethylsiloxane." In SPIE NanoScience + Engineering, edited by Stefano Cabrini and Taleb Mokari. SPIE, 2012. http://dx.doi.org/10.1117/12.928339.

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Muryani, B. Y., N. Sarifah, D. R. Kusumawardani, and F. Nurosyid. "Effect concentration of dye solution binahong leaves to the efficiency of dye-sensitized solar cell (DSSC)." In INTERNATIONAL CONFERENCE ON SCIENCE AND APPLIED SCIENCE (ICSAS) 2019. AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5141735.

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Ismail, Syarifah Nursyimi Azlina Syed, Wahida Abdul Rahman, Nur Afiqah Abdul Rahim, Non Daina Masdar, and Mohd Lias Kamal. "Adsorption of malachite green dye from aqueous solution using corn cob." In 3RD INTERNATIONAL SCIENCES, TECHNOLOGY & ENGINEERING CONFERENCE (ISTEC) 2018 - MATERIAL CHEMISTRY. Author(s), 2018. http://dx.doi.org/10.1063/1.5066992.

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Senevirathne, Chathuranganie A. M., Van T. N. Mai, Atul Shukla, Shih-Chun Lo, Ebinazar B. Namdas, Toshinori Matsushima, Atula S. D. Sandanayaka, and Chihaya Adachi. "Solution Processable Fluorene-Based Laser Dye for Organic Solid-State Lasers." In 2020 International Conference on Solid State Devices and Materials. The Japan Society of Applied Physics, 2020. http://dx.doi.org/10.7567/ssdm.2020.g-1-03.

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Reports on the topic "Dye solution"

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Lance, Richard, and Xin Guan. Variation in inhibitor effects on qPCR assays and implications for eDNA surveys. Engineer Research and Development Center (U.S.), August 2021. http://dx.doi.org/10.21079/11681/41740.

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Aquatic environmental DNA (eDNA) surveys are sometimes impacted by polymerase chain reaction (PCR) inhibitors. We tested varying concentrations of different inhibitors (humic, phytic, and tannic acids; crude leaf extracts) for impacts on quantitative PCR (qPCR) assays designed for eDNA surveys of bighead and silver carp (Hypophthalmichthys nobilis and Hypophthalmichthys molitrix). We also tested for inhibition by high concentrations of exogenous DNA, hypothesizing that DNA from increasingly closely related species would be increasingly inhibitory. All tested inhibitors impacted qPCR, though only at very high concentrations — likely a function, in part, of having used an inhibitor-resistant qPCR solution. Closer phylogenetic relatedness resulted in inhibition at lower exogenous DNA concentrations, but not at relatively close phylogenetic scales. Inhibition was also influenced by the qPCR reporter dye used. Importantly, different qPCR assays responded differently to the same inhibitor concentrations. Implications of these results are that the inclusion of more than one assay for the same target taxa in an eDNA survey may be an important countermeasure against false negatives and that internal positive controls may not, in the absence of efforts to maximize inhibition compatibility, provide useful information about the inhibition of an eDNA assay.
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Silverstein, Eva, and /Stanford U., Phys. Dept. /SLAC. Simple de Sitter Solutions. Office of Scientific and Technical Information (OSTI), January 2008. http://dx.doi.org/10.2172/921617.

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Mansur, Marcelo Borges. Sulfatação seletiva:Remoção de ferro de PLS (pregnant leaching solution). ITV, 2020. http://dx.doi.org/10.29223/prod.tec.itv.mi.2020.22.mansur.

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Leduc, J., and S. M. Ahmed. Mesures de l'impédance à l'interface semi-conducteur-solution. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1985. http://dx.doi.org/10.4095/307067.

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Hereman, W., P. P. Banerjee, and M. R. Chatterjee. Derivation and Implicit Solution of the Harry Dym Equation, and Its Connections with the Korteweg-De Vries Equation. Fort Belvoir, VA: Defense Technical Information Center, April 1988. http://dx.doi.org/10.21236/ada196053.

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Schiesser, W. E. Method of lines solution of the Korteweg-de Vries equation. Office of Scientific and Technical Information (OSTI), June 1993. http://dx.doi.org/10.2172/64337.

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Eric S. Peterson, Jessica Trudeau, Bill Cleary, Michael Hackett, and William A. Greene. A Membrane Process for Recycling Die Lube from Wastewater Solutions. Office of Scientific and Technical Information (OSTI), April 2003. http://dx.doi.org/10.2172/911428.

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Peterson, E. S., J. Trudeau, B. Cleary, M. Hackett, and W. A. Greene. A Membrane Process for Recycling Die Lube from Wastewater Solutions. Office of Scientific and Technical Information (OSTI), April 2003. http://dx.doi.org/10.2172/817489.

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Whitten, David G. Final report, DOE Award No. DE-FG02-86ER13504 [Photoinduced electron transfer processes in homogeneous & microheterogeneous solutions]. Office of Scientific and Technical Information (OSTI), August 2001. http://dx.doi.org/10.2172/808021.

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Meirovitch, Hagai. New theoretical approach for elucidating the solution structure of peptides from NMR data. Final report on DOE Grant DE-FG02-97ER62490. Office of Scientific and Technical Information (OSTI), May 2002. http://dx.doi.org/10.2172/771251.

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