Journal articles: 'Dye solution'

1

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, Î» â¤ 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.Â 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/Fentonâs reagent process in aqueous solution (pH, 3.1). Â Keywords: Malachite green; Organic dye, Dye mineralization, Fenton reagents, Xenon radiation.Â Â©2009 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved.DOI: 10.3329/jsr.v1i1.1059Â

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8

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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10

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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11

Hamada, Kunihiro, Kei Yamada, Masaru Mitsuishi, Manabu Ohira, and Koyuki Miyazaki. "Gelation of an aqueous fluorinated dye solution." Journal of the Chemical Society, Chemical Communications, no. 7 (1992): 544. http://dx.doi.org/10.1039/c39920000544.

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12

Perkowski, J., J. L. Gȩbicki, R. Łubis, and J. Mayer. "Pulse radiolysis of anthraquinone dye aqueous solution." International Journal of Radiation Applications and Instrumentation. Part C. Radiation Physics and Chemistry 33, no. 2 (January 1989): 103–8. http://dx.doi.org/10.1016/1359-0197(89)90215-4.

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13

Ashraf, Muhammad Waqar. "Removal of methylene blue dye from wastewater by using supported liquid memberane technology." Polish Journal of Chemical Technology 18, no. 2 (June 1, 2016): 26–30. http://dx.doi.org/10.1515/pjct-2016-0025.

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Abstract The present work describes the application of Supported Liquid Membrane (SLM) technology towards the removal and recovery of a cationic dye (Methylene Blue) from aqueous solutions. Natural and non-toxic vegetable oils have been impregnated on microporous polymeric films of polyvinylidene fluoride (PVDF) to constitute a liquid membrane. Different parameters affecting the transport, like pH of feed solution, acid concentration in the strip solution, initial dye concentration, oil types and stirring speeds have been investigated. Highest value of flux (1.7 × 10−5 mg/cm2/sec1) for methylene blue dye was achieved with sunflower oil impregnated on the PVDF support, with pH maintained at 12 in the feed solution and 0.3 M hydrochloric acid concentration in the strip solution. It took 6 hours to transport maximum amount of dye under optimum conditions.

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14

Rahayu, S., A. T. Dosi, and P. Wulandari. "Optimization of metal nanoparticles concentration in dye solution to enhance performance of dye sensitized solar cells." Journal of Physics: Conference Series 2243, no. 1 (June 1, 2022): 012090. http://dx.doi.org/10.1088/1742-6596/2243/1/012090.

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Abstract In this study, we incorporate metal nanoparticles of AuNP and AgNP into dye N-719 solution in order to enhance the light absorption of dye-sensitized solar cells (DSSCs) device. AuNP or AgNP was mixed into N-719 dye solution by optimized the concentration of metal NPs. The optical property of the mixtures was investigated by use of UV-Vis spectroscopy while the morphology of the solutions was captured by TEM microscopy. The performance of DSSCs was done by J-V measurement equipped with solar simulator under light illumination of 100mW/cm2. Our fabricated DSSC devices show the enhancement of current density and power conversion efficiency (PCE) with the incorporation of metal NPs into dye layer. Addition of gold nanoparticle capped by dodecanethiols (AuDT) 5.66 wt.% reveals the enhancement of PCE devices from 1.58% without AuDT as reference to 2.77% with AuDT. Similar case for the addition of AgSC8 into dye of DSSC gives the same tendencies.

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15

Kostjukov, V., S. Leontieva, E. Savchenko, K. Rybakova, and D. Voronin. "PHOTOEXCITATION OF NILE BLUE DYE IN AQUEOUS SOLUTION: TD-DFT STUDY." Russian Journal of Biological Physics and Chemisrty 7, no. 2 (November 15, 2022): 209–21. http://dx.doi.org/10.29039/rusjbpc.2022.0505.

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The vibronic absorption spectra of Nile blue (NB) oxazine dye in an aqueous solution using 13 hybrid functionals, the 6-31++G(d,p) basis set, and the IEFPCM solvent model were calculated. It turned out that the O3LYP functional provided the best agreement with the experiment. Various parameters of the NB cation in the ground and excited states (IR spectra, atomic charges, dipole moments, and transition moment) were obtained. Maps of the distribution of electron density and electrostatic potential have been built. The influence of four strong hydrogen bonds of the dye with water molecules on the absorption spectrum was analyzed. It has been shown that two from these bonds were strengthened upon NB excitation and two ones were weakened. It was found that explicit assignment of water molecules strongly bound to the dye leads to a redshift of the spectrum as a whole and worsened its shape.

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Jaber, Huda A., and Marwa F. Abdul Jabbar. "Adsorption of Cationic and Anionic Dyes from Aqueous Solution Using Sunflower Husk." Chemistry & Chemical Technology 15, no. 4 (November 25, 2021): 567–74. http://dx.doi.org/10.23939/chcht15.04.567.

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The current study deals with the removal of cationic dye (brilliant green) and anionic dye (methyl orange) from wastewater by using sunflower husk as an adsorbent. The operation takes place batch wise by applying several concentrations of the dye solution with various adsorbent amounts, at a range of initial PH values and particle sizes at varying contact time intervals. The percent of dye removed for two dyes increased with increasing time and adsorbent dose and decreased with increasing the dye concentration and particle size. The equilibrium time differed according to conditions used. The optimum removal for brilliant green dye was 98 %, which was achieved at 50 ppm dye concentration, 2 g\l adsorbent dose, 75 µm particles size and pH 7 at contact time of 1 h, compared with low removal for methyl orange that reached 54 % under optimum conditions (dye concentration 10 ppm, adsorbent dose 4 g/l, pH 3 at the same particles size and time). Kinetic studies were conducted and revealed that the adsorption was well defined by pseudo-second order model and could be described by the Langmuir isotherm.

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17

Ogomi, Yuhei, Shyam S. Pandey, Shunta Kimura, and Shuzi Hayase. "Probing mechanism of dye double layer formation from dye-cocktail solution for dye-sensitized solar cells." Thin Solid Films 519, no. 3 (November 2010): 1087–92. http://dx.doi.org/10.1016/j.tsf.2010.08.049.

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18

Fang, Hua, Lu Hai Li, Wen Bo Li, Xian Leng, Xu Wei Hu, and Wei Wei Li. "Factors Influencing Dye Colors." Advanced Materials Research 284-286 (July 2011): 2041–44. http://dx.doi.org/10.4028/www.scientific.net/amr.284-286.2041.

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In order to anticipate the color of dye ink more accurately, WENZHOU Mernuo Red-10 as an example, who was dissolved in different polarity solvent by magnetic stirring and ultrasonic agitation, the influence for properties of solvent on color of dye was researched with the coating method through contrasting sample papers. The influence for pH values of the solution and adding water to Red-10 solution on color of dye were also researched. It's shown that with the increased polarity of the solution,the absorption wavelength of Red-10 reduced gradually,light shade effect was caused. For the same solvent,with the pH values of the solvent increased,the absorption wavelength of Red-10 reduced gradually,light shade effect was caused.And all the factors affect the L,a,b values of the Red-10 dye's samples.

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19

Tang, Zhiyuan, Kuanjun Fang, Yawei Song, and Fuyun Sun. "Jetting Performance of Polyethylene Glycol and Reactive Dye Solutions." Polymers 11, no. 4 (April 24, 2019): 739. http://dx.doi.org/10.3390/polym11040739.

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The jetting performance of dye inks determines the image quality, production efficiency, and lifetime of the print head. In the present study, we explored the jetting performance of mixed solutions of polyethylene glycol (PEG) and reactive dye by testing the visible absorption spectra, rheological properties, and surface tension, in addition to the observation of droplet formation. The results indicate that PEG macromolecules could change the aggregate groups of Red 218 molecules into smaller ones through hydrophobic interactions and separation effect. The addition of PEG into the dye solution increased the viscosity and decreased the surface tension. In the whole shear rate range tested, the 10% and 20% PEG400, as well as the 30% PEG200 dye solutions, showed good Newtonian fluid behavior. PEG macromolecules improved the droplet formation of the dye solutions. Increasing the PEG400 concentration to 30% and 40% resulted in elimination of the formation of satellites and the formation of ideal droplets at 10,000 Hz jetting frequency. A 30% PEG600-dye solution with the Z value of 4.6 formed the best spherical droplets at 10,000 Hz and produced perfect color images on cotton fabrics.

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20

Sun, Hong Hai. "Adsorption of Dye from Aqueous Solution by Palm Leaves." Applied Mechanics and Materials 539 (July 2014): 823–26. http://dx.doi.org/10.4028/www.scientific.net/amm.539.823.

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In this study, the palm leaves powder was used as adsorbent for the removal of rhodamine B (RhB) from aqueous solutions. The effects of initial RhB concentrations, adsorbent dosage, initial solution pH and contact time on the amount of color removal was investigated. Batch kinetics and isotherm studies were conducted to evaluate the adsorption behavior of the palm leaves powder. TheLangmuir and Freundlich isotherm model were used to describe the equilibria data. Further, the kinetics involved in the sorption process was evaluated at different initial RhB concentrations.

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Milanchian, Karim, Habib Tajalli, Zahra Eyni, and Mohammad Sadegh Zakerhamidi. "Study of molecular aggregation effects on the nonlinear refractive index and absorption of Oxazin 720 laser dye." Canadian Journal of Physics 94, no. 9 (September 2016): 834–38. http://dx.doi.org/10.1139/cjp-2015-0427.

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In this experimental work, nonlinear optical properties of Oxazine 720 laser dye in acetone, dimethyl sulfoxide, ethanol, and water were studied using the z-scan method. It is found that the nonlinear behavior of Oxazine 720 dye in water is different from other organic solvents. The magnitude of the nonlinear refractive index was obtained in the order of 10−8 and 10−7 cm2/W for the 0.2 mmol/L solutions of this dye in water and other solvents, respectively. Also, it was observed that, in the aqueous solution, reverse saturation absorption occurs while, in other organic solvents, saturation absorption occurs and, near the focal point of the lens, it is converted to reverse saturation absorption. These differences in the nonlinear refractive index and nonlinear absorption changes of aqueous solution and other solutions may be due to strong aggregative behavior of dye molecules in water.

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Journal, Baghdad Science. "Gamma Ray Effect on the Properties of Coumarin C47 Laser Dye." Baghdad Science Journal 15, no. 3 (September 13, 2018): 310–13. http://dx.doi.org/10.21123/bsj.15.3.310-313.

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The research is concerned about studying the absorption spectrum of the solution coumarin dye C47. The chloroform solvent was used with C47 dye in three different concentrations 10-4, 10-5 and 10-6 M. The laser dye solution was prepared by dissolving the required amount of dye in chloroform alcohol, while studying absorption spectrum before and after irradiation with gamma ray by cobalt-60 source 60Co at exposure time, which are 0, 4, 6 and 18 hours with different absorbed doses 0, 136, 204 and 612 Gy. The results show that red shift in the absorption spectrum was increased by increasing the concentration of laser dye solutions , while the increase of gamma dose led to increase the red shift after irradiation, as the exposure period and irradiation dose increased from gamma ray at 60Co source. Furthermore, the decrease in the concentrations of laser dye solutions shifts the absorption spectrum peak towards the short wavelength blue shift.

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23

Min, Ohm-Mar, Li-Ngee Ho, Soon-An Ong, and Yee-Shian Wong. "Comparison between the photocatalytic degradation of single and binary azo dyes in TiO2 suspensions under solar light irradiation." Journal of Water Reuse and Desalination 5, no. 4 (July 8, 2015): 579–91. http://dx.doi.org/10.2166/wrd.2015.022.

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Textile industries discharge a large quantity of colored wastewater which is harmful to the ecosystem. In this study, two kinds of dyes were investigated: the mono azo Acid Orange 7 (AO7) and diazo Reactive Green 19 (RG19). The photocatalytic degradation of single (AO7, RG19) azo dye and binary (AO7 and RG19 mixture) azo dye aqueous solutions was photocatalyzed by commercial titanium dioxide (TiO2, P25) under solar light irradiation. The objectives of this study are to compare the photocatalytic degradation between single and binary azo dye aqueous solution and to study the various parameters such as the effect of different initial azo dye concentrations, different initial azo dye pH values, and compare the adsorption capacity of azo dyes with and without solar light irradiation, which influences the photocatalytic activities of single and binary azo dye aqueous solutions in a TiO2 suspension. The results showed that photocatalytic degradation of AO7 and RG19 in a single azo dye aqueous solution was faster than a binary azo dye solution under the solar light irradiation process. Chemical oxygen demand results revealed that complete mineralization could be achieved for both AO7 and RG19 azo dyes under solar light irradiation within 22 hours.

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Nikodijević, Milena, and Dragan Đorđević. "Equilibrium sorption of reactive dye on polyamide." Kragujevac Journal of Science, no. 44 (2022): 37–43. http://dx.doi.org/10.5937/kgjsci2244037n.

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The equilibrium sorption of dyeing polyamide 6.6 fabric with reactive dye is presented in this paper. Polyamide is a chemical fiber obtained from synthetically produced polymers, while reactive dyes are most often sulfonated azo compounds: which are derived from bendisidine and its derivatives. The solution in a constant volume contained dye concentrations of 5, 10, 15, 20, 30, 40 and 50 mg/L. The samples were dyed at temperatures of 40, 60 and 98°C. A spectrophotometer (Cary 100 Conc UV-VIS, Varian) was used to measure the absorbance of aqueous dyed solutions and to calculate the unknown dye concentration in the solution and to construct a calibration curve. The degree of dye exhaustion and the amount of absorbed dye were calculated. Two models of adsorption isotherms were used: Freundlich and Florry-Huggins. The high functionality of the variable was observed in the Freundlich model.

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Sun, Yu Feng, Jin Lei Chen, and Wen Jie Zhang. "Methyl Orange Degradation on TiO₂ and Mixture of TiO₂ and HZSM-5 in NaHCO₃ Solution." Advanced Materials Research 496 (March 2012): 142–45. http://dx.doi.org/10.4028/www.scientific.net/amr.496.142.

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Methyl orange decoloration was conducted in the solution containing NaHCO3. TiO2 and the mixture of TiO2 and HZSM-5 were used as the photocatalysts. The addition of TiO2 greatly changed adsorption of methyl orange in solutions containing different concentration of NaHCO3. The existence of NaHCO3 can improve photocatalytic degradation of the dye under UV irradiation in the solution containing TiO2. As high as 55% decoloration of the dye occurred in the solution containing 1.0 mol/l NaHCO3. When NaHCO3 concentration was lower than 0.08 mol/l, adsorption of the dye was fairly weak on the mixture. At the same time, decoloration of the dye deceased with increasing NaHCO3 concentration. When NaHCO3 concentration was high, adsorption and decoloration of the dye were better at higher NaHCO3 concentration.

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Shbeeb, Ruwaida Tahseen, Sarmed S. Mahdi, and Sabreen A. Khalaf. "Effect of Silver Nanoparticles on Fluorescence Intensity of Fluoreseina Dye Mixed in One Solution." Iraqi Journal of Physics (IJP) 19, no. 51 (December 1, 2021): 54–63. http://dx.doi.org/10.30723/ijp.v19i51.710.

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Metal enhanced fluorescence (MEF) is an unequaled phenomenon of metal nanoparticle surface plasmons, when light interacts with the metal nanostructures (silver nanoparticles) which result electromagnetic fields to promote the sensitivity of fluorescence. This work endeavor to study the influence of silver nanoparticles on fluorescence intensity of Fluoreseina dye by employment mixture solution with different mixing ratio. Silver nanoparticles had been manufactured by the chemical reduction method so that Ag NP layer coating had been done by hot rotation liquid method. The optical properties of the prepared samples (mixture solution of Fluoreseina dye solutions and colloidal solution with 5 minutes prepared of Ag NPs) tested by using UV-VIS absorption and Fluorescence spectrophotometer. by using AFM, SEM testes, the structure of silver nanoparticles had been estimated. the result of this work showed that adding Ag NPs colloidal to Fluoreseina dye solution help get a significant increase in the fluorescence intensity of this dye. this study results show that its significant to recent related studies in MEF.

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Zhang, Liyuan, Kuanjun Fang, and Hua Zhou. "Interaction of Reactive-Dye Chromophores and DEG on Ink-Jet Printing Performance." Molecules 25, no. 11 (May 28, 2020): 2507. http://dx.doi.org/10.3390/molecules25112507.

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Digital inkjet printing has been widely used in textile industry. The quality of dye solutions and ink-jet droplets limits the ink-jet printing performance, which is very important for obtaining high-quality ink-jet printing images on fabrics. In this paper, we introduced diethylene glycol (DEG) into the dye solutions of Reactive Blue 49 and Reactive Orange 13, respectively, and investigated the interaction between dye chromophores and DEG molecules. Results indicated that the dye chromophores were featured in the aggregation. Adding DEG into the dye solution could effectively disaggregate clusters of reactive dyes, and eliminate satellite ink droplets, thus improving the resolution of the ink-jet printing image on fabrics. Under the same DEG concentration, the disaggregation effect was more obvious in Orange 13 than in Reactive Blue 49. Higher DEG concentration was required in Reactive Orange 13 solution for creating complete and stable ink drops. The surface tension and viscosity of the dye solutions were measured, and printing performance on cotton fabrics was evaluated. The interaction mechanism between dye chromophores and DEG molecules was also investigated. Results from this work are useful for high-quality ink-jet printing images on fabrics.

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Stevens, Alan, and Karen Gast. "GLYCERIN/DYE SOLUTION UPTAKE IN PRESERVED DECORATIVE FOLIAGE." HortScience 29, no. 5 (May 1994): 554e—554. http://dx.doi.org/10.21273/hortsci.29.5.554e.

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The commercial production of preserved plant materials for decorative purposes is expanding. The industry, once dominated by a relatively small number of large wholesale firms, marketing through traditional retail florists, is undergoing change. A large retail craft supply industry, country accent retail stores and home-based businesses selling at craft fairs have greatly expanded the market for preserved plant materials. Glycerin has often been used to maintain flexibility and reduce breakage of preserved foliages. Dyes are added to the glycerin to add color to the tissue as the chlorophyll fades. Competition in the marketplace places constant pressure on controlling costs. Technical grade dyes of lower dye purity and higher salt concentrations have a lower cost per gram of material than food grade dyes. The effect of the two grades of dye on uptake of glycerin/dye solutions into Eucalyptus cinerea were measured. Under both growth chamber and laboratory room environments glycerin solution alone was systemically absorbed at a greater rate and in larger quantity than either grade of dye. A variation in systemic absorption between grades of dye was also indicated.

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Tanaka, Takeshi. "Polishing of Aluminum Alloy Using Photocatalyst and Cathilon Dye under Utraviolet Irradiation." Advanced Materials Research 1136 (January 2016): 321–26. http://dx.doi.org/10.4028/www.scientific.net/amr.1136.321.

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A fundamental study on finishing aided by an ultraviolet ray (generally mashining:referred to as U-RAMR) was conducted to evaluate its applicability to the polishing of aluminum alloy. Qualitative analysis with X-ray photoelectron spectroscopy (XPS) was used to estimate the chemical reaction induced on Al surfaces that were immersed in some solutions. Inductively coupled plasma spectroscopy (ICPS) was employed to quantitatively analyze the amount of oxidized/dissolved Al, Mg and Fe. The following conclusions were obtained by investigation of the aluminum alloy polishing process. Aluminum does not dissolve in TiO2-solution, whereas a small amount of Al dissolves into cathilon dye solution. Although only a small amount of Al dissolves in TiO2-cathilon dye solution in the absence of UV irradiation, the amount of Al dissolved increases slightly under UV irradiation with the formation of oxide, nitrogen oxide and nitride on the Al surface. In addition, a small amount of an aluminum chloride dissolves into TiO2-cathilon dye solution. An Al alloy (A5052) surface was made flat by polishing with TiO2-cathilon dye slurry under UV irradiation.

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Leandri, V., H. Ellis, E. Gabrielsson, L. Sun, G. Boschloo, and A. Hagfeldt. "An organic hydrophilic dye for water-based dye-sensitized solar cells." Phys. Chem. Chem. Phys. 16, no. 37 (2014): 19964–71. http://dx.doi.org/10.1039/c4cp02774d.

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Kuo, Hsiu-Po, and Chun-Te Wu. "Speed up dye-sensitized solar cell fabrication by rapid dye solution droplets bombardment." Solar Energy Materials and Solar Cells 120 (January 2014): 81–86. http://dx.doi.org/10.1016/j.solmat.2013.08.016.

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Zhang, Li Fang, and Min Wang. "Biosorption of C. I. Reactive Red 2 by Immobilized Fungal Biomass." Advanced Materials Research 213 (February 2011): 432–36. http://dx.doi.org/10.4028/www.scientific.net/amr.213.432.

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The biosorption of C. I. Reactive Red, from aqueous solutions by calcium alginate immobilized Penicilium sp. biomass was studied in a batch system. The effects of solution initial pH, temperature, NaCl concentration and initial dye concentration on dye biosorption were investigated. In batch experiments, the dye removal efficiency decreased with increase in solution pH, and the maximum dye biosorption of immobilized biomass was 93.20% at pH 2. In the contrary, the percentage of dye removal was increased in the dye biosorption with the increasing temperature in studied temperature. The Langmuir and Freundlich isotherm models were applied to experimental equilibrium data and the Langmuir model better described the equilibrium dye uptake than the Freundlich model. According to the Langmuir model, the maximum dye uptake was obtained as 120.48mg/g. The results indicate that the immobilized Penicilium sp. biomass can be used as an effective biosorbent to removal C. I. Reactive Red from aqueous solution.

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Caprarescu, Simona, Alexandra Raluca Miron, Violeta Purcar, Anita-Laura Radu, Andrei Sarbu, Daniela Ion-Ebrasu, Leonard-Ionuţ Atanase, and Marius Ghiurea. "Efficient removal of Indigo Carmine dye by a separation process." Water Science and Technology 74, no. 10 (September 13, 2016): 2462–73. http://dx.doi.org/10.2166/wst.2016.388.

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This study is aimed at developing an innovative approach for Indigo Carmine dye removal from synthetic solutions by electrodialysis, carried out using ion exchange membranes. The batch electrodialysis system was operated at various current intensities: 0.05, 0.1 and 0.15 A. The pH and conductivity of solutions were measured before and after using electrodialysis process. The colour removal efficiency (CR %) was determined by spectrographic analysis and the energy consumption (EC) was calculated. The obtained results show that the pH of treated solution increases due to the increase in solution conductivity. Moreover, the values of CR % and EC increase when increasing current intensity. The optimal value was obtained at 0.15 A (CR > 97%). The membranes were characterized by Fourier transform infrared spectroscopy, thermogravimetric analysis and scanning electron microscopy.

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Charra, Fabrice, Fabrice Devaux, Jean-Michel Nunzi, and Paul Raimond. "Picosecond light-induced noncentrosymmetry in a dye solution." Physical Review Letters 68, no. 16 (April 20, 1992): 2440–43. http://dx.doi.org/10.1103/physrevlett.68.2440.

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Sinha, Sucharita, Alok Ray, and K. Dasgupta. "Solvent dependent nonlinear refraction in organic dye solution." Journal of Applied Physics 87, no. 7 (April 2000): 3222–26. http://dx.doi.org/10.1063/1.372327.

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Ho, Y. S., and G. McKay. "Sorption of dye from aqueous solution by peat." Chemical Engineering Journal 70, no. 2 (June 1998): 115–24. http://dx.doi.org/10.1016/s0923-0467(98)00076-1.

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37

Noël, Isabelle M., Rémi Lebrun, and Christian R. Bouchard. "Electro-nanofiltration of a textile direct dye solution." Desalination 129, no. 2 (July 2000): 125–36. http://dx.doi.org/10.1016/s0011-9164(00)00055-2.

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Ou, Zhong-min, Hiroshi Yao, and Keisaku Kimura. "Organic Nanoparticles of Cyanine Dye in Aqueous Solution." Bulletin of the Chemical Society of Japan 80, no. 2 (January 15, 2007): 295–302. http://dx.doi.org/10.1246/bcsj.80.295.

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Chakraborty, S., B. C. Bag, S. Das Gupta, S. De, and J. K. Basu. "Separation and Fractionation of Dye Solution by Nanofiltration." Separation Science and Technology 38, no. 1 (January 3, 2003): 219–35. http://dx.doi.org/10.1081/ss-120016707.

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Myat, Moe Myat, and Khin Ma Ma. "Removal Dye Color from Aqueous Solution By Adsorption." International Journal of ChemTech Research 12, no. 04 (2019): 01–06. http://dx.doi.org/10.20902/ijctr.2019.120401.

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41

Zhang, Xin, Daniel Görl, and Frank Würthner. "White-light emitting dye micelles in aqueous solution." Chemical Communications 49, no. 74 (2013): 8178. http://dx.doi.org/10.1039/c3cc44875d.

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Mokhtari, A. E. A., and J. Chesnoy. "Terahertz fluorescence quantum beats in a dye solution." IEEE Journal of Quantum Electronics 25, no. 12 (1989): 2528–31. http://dx.doi.org/10.1109/3.40638.

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43

Hamada, Kunihiro, Hiroyuki Kubota, Ayako Ichimura, Toshiro Lijima, and Shigetoshi Amiya. "Aggregation of an Azo Dye in Aqueous Solution." Berichte der Bunsengesellschaft für physikalische Chemie 89, no. 8 (August 1985): 859–63. http://dx.doi.org/10.1002/bbpc.19850890811.

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44

Royer, Betina, Natali F. Cardoso, Eder C. Lima, Vanusa S. O. Ruiz, Thaís R. Macedo, and Claudio Airoldi. "Organofunctionalized kenyaite for dye removal from aqueous solution." Journal of Colloid and Interface Science 336, no. 2 (August 2009): 398–405. http://dx.doi.org/10.1016/j.jcis.2009.04.025.

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45

Jahan, Nusrat, and Sharfun Nahar Arju. "A Sustainable Approach to Study on Antimicrobial and Mosquito Repellency Properties of Silk Fabric Dyed with Neem (Azadirachta indica) Leaves Extractions." Sustainability 14, no. 22 (November 14, 2022): 15071. http://dx.doi.org/10.3390/su142215071.

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The present research work was conducted on developing sustainable production of mulberry filament silk fabric dyed with different extracted dye solutions based on extraction ratios of 1:4, 1:6, 1:8, and 1:10 from neem (Azadirachta indica) leaves. The research work focused on evaluating the antimicrobial and mosquito repellent properties of dyed silk fabric. In the experiment, the samples were dyed using the exhaust method at different dye bath concentrations i.e., 15 g/L, 20 g/L, and 25 g/L in the presence and absence of mordant at 80 °C maintaining 1:60 dyeing liquor ratio. The absorbance of the extracted dye solutions was determined with a UV/VIS spectrophotometer, which detected the highest absorbance of 7.73 at the peak 490 nm of λmax of 1:4 extracted dye solution. Fourier transform infrared (FTIR) spectroscopy was used to investigate the chemical structure of dyed fabrics; however, no chemical changes or bond formation occurred; instead, dye particles were deposited on the fabric layer, indicating the presence of bioactive components. Allergy test was also performed to confirm allergic reactions of neem extract on human skin. The antimicrobial activity of extracted dye solutions and dyed samples was estimated against Gram-positive (Staphylococcus aureus) and Gram-negative (Escherichia coli) bacteria using the agar diffusion method and mosquito repellency of fabrics were examined by the cage method. The results emphasized that dyed fabric with the highest concentrated dye solution, 1:4 extraction, and highest dye bath concentration, 25 g/L along with mango bark mordant solution, possesses the highest antimicrobial activity in terms of an inhibition zone of 0.67 mm against Gram-negative bacteria and 0.53 mm against Gram-positive bacteria obtained after incubation, and the highest mosquito repellent of 75% due to the absorption of active bio constituents. The experimental results also determined that the dyed fabric with 1:4 extracted dye solution exhibited good antimicrobial (inhibition zone, 0.65 mm against E. coli and 0.52 mm against S. aureus) and mosquito repellent property (66.67%). The experimental study also revealed that Potassium dichromate mordant reduced the antimicrobial (inhibition zone, 0.05 mm against E. coli and no inhibition against S. aureus) and mosquito repellent action (33.33%). In conclusion, the data revealed that the increase in the extraction ratio of dye solution and dye bath concentration has no impact on the silk fibroin; it only impacts what is deposited on the fabric layer that improves its antimicrobial and mosquito repellency. The current research showed that neem leaves were found to have a beneficial effect in controlling microorganisms and mosquitoes through a sustainable approach.

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Joshi, Leela Pradhan. "Prunus domestica dye extraction for fabrication of zinc oxide based dye-sensitized solar cells." BIBECHANA 13 (December 3, 2015): 23–28. http://dx.doi.org/10.3126/bibechana.v13i0.13341.

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Aluminium doped Zinc Oxide (AZO) seed layers were deposited on Fluorine doped Tin Oxide (FTO) substrates using a spin coating technique. These were then immersed in growth solutions of zinc nitrate, hexamethylenetetramine and distilled water to develop nanoplates of Zinc Oxide (ZnO). The nanostructures of ZnO grown on FTO were studied using x-ray diffraction techniques. Dye-sensitized solar cells (DSSC) were fabricated using two prepared electrodes, one of dye-loaded zinc oxide and another that was platinum coated. The electrolyte used was potassium iodide iodine solution. The performance of the assembled DSCCs was tested by drawing an IV curve. The results showed that the short circuit current and open circuit voltages were about 10 microamperes and 270 millivolts respectively.BIBECHANA 13 (2016) 23-28

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Chen, Qi, Zhicheng Yan, Hao Zhang, KiBuem Kim, and Weimin Wang. "Role of Nanocrystallites of Al-Based Glasses and H2O2 in Degradation Azo Dyes." Materials 14, no. 1 (December 24, 2020): 39. http://dx.doi.org/10.3390/ma14010039.

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Al-based metallic glasses have a special atomic structure and should have a unique degradation ability in azo dye solutions. The Al88Ni9Y3 (Y3), Al85Ni9Y6 (Y6) and Al82Ni9Y9 (Y9) glassy ribbons are melt spun and used in degrading methyl orange (MO) azo dye solution with adding H2O2. With increasing cY, the as-spun ribbons have an increasing GFA (glass formability) and gradually decreased the degradation rate of MO solution. TEM (transmission electron microscopy) results show that the Y3 ribbon has nano-scale crystallites, which may form the channels to transport elements to the surface for degrading the MO solution. After adding H2O2, the degradation efficiency of Al-based glasses is improved and the Y6 ribbon has formed nano-scale crystallites embedded in the amorphous matrix and it has the largest improvement in MO solution degradation. These results indicate that forming nano-scale crystallites and adding H2O2 are effective methods to improve the degradation ability of Al-based glasses in azo dye solutions.

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Motahari, Hamid, Hoorieh Shaterian Mohammadi, and Abbas Behjat. "Orange dye Removal Efficiency by Few-layer Graphene: an Investigation by UV-Vis Spectroscopy-=SUP=-*-=/SUP=-." Оптика и спектроскопия 130, no. 2 (2022): 342. http://dx.doi.org/10.21883/os.2022.02.52005.1020-21.

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Nowadays, few-layer graphene (FLG) has been introduced as a new type of adsorbent. In this research, the orange dyes including, methyl orange (MO) as an industrial dye and the soft drink orange dye (orange Fanta soda) as a food dye, have been removed by FLG adsorbent. In all steps, UV-Vis spectroscopy as a valuable and fast method has been applied. The optical absorption coefficient has been decreased from 0.9 to less than 0.2 by FLG adsorbent for 50 ppm MO dye solution. Therefore, the MO solution with 50 ppm concentration converts to about 10 ppm output solution using 0.05 g of FLG adsorbent in a few minutes. It is about 80% adsorption dye removal efficiency. Also, MO dye removals have been performed in the range of 10 ppm to 500 ppm concentrations, but as the concentration of the solution increases, the dye adsorption ability of FLG decreases. The maximum efficient and optimum MO dye concentrations are about 100 ppm and 50 ppm, respectively, due to 0.05 g FLG adsorbent. It has been completely saturated at about 500 ppm concentration MO dye solution. Also, it has been observed that, for 50 ppm MO dye solution, increasing the amount of mass adsorbent from 0.05 g to 0.25 g can cause the output MO concentration to decrease from 10 ppm to 3 ppm. It has been revealed that about 94% of MO dye can remove by 0.25 g FLG adsorbent. The contact time due to 94% MO removal process is less than 5 minutes. Therefore, only by 0.25 g of FLG adsorbent we can purify wastewater containing 50 ppm MO dye to less than 3 ppm dye concentration, at less than a few minutes. Finally, the FLG glass tube filter can remove more than 90% food orange dye in less than 90 seconds for 50 ml of soft drink solution. Therefore, the FLG tube filtration process is so fast, easy, and high efficient. Keywords: adsorption, Few-Layer Graphene, methyl orange, UV-Vis spectroscopy, orange dye.

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Ashraf, M. Waqar, Michael P. Collins, M. Amin Mir, Abdus Salam, and Anwar Ul-Hamid. "Separation of Crystal Violet Dye from Wastewaters by Using Supported Liquid Membrane Technology." Journal of Chemistry 2022 (March 23, 2022): 1–8. http://dx.doi.org/10.1155/2022/8143981.

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The current study enumerates the use of supported liquid membrane (SLM) technology to remove and recover crystal violet dye from wastewaters. The management of textile industry waste effluents is one of the main concerns of environmental health experts due to having excessive concentrations of dyes and resistance to biodegradation. Liquid membranes offer an affordable and green method for the selective removal of dyes from aqueous solutions. To create a liquid membrane, refined and edible vegetable oils were supported on microporous polymeric films of polypropylene (PP1E). Various parameters influencing transport, such as pH range in the feed solution, initial dye concentration, acid concentration in the strip solution, oil viscosities, and membrane lifetime, have been studied. The maximum flux value ( 1.7 × 10 − 5 mg/cm2/s) for crystal violet dye was obtained with sunflower oil-supported membrane at a pH of 12 in the feed solution and a concentration of 0.3 M hydrochloric acid in the strip solution. Under ideal conditions, the maximum amount of dye was transported within 6 hours. Studies on membrane stability and morphology revealed that the flux remained constant up to about 24 hours and then decreased gradually. Morphological studies showed that this may be attributed to deformation of pores shape and gradual clogging.

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Zhang, Li Fang, and Min Wang. "Removal of Neutral Red from Aqueous Solution by Pretreated Penicillium Sp." Advanced Materials Research 383-390 (November 2011): 3969–75. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.3969.

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The biosorption of neutral red, from aqueous solutions by Penicilium sp. biomass was studied in a batch system with respect to pretreatment methods, contact time, pH, initial dye concentration and temperature. The NaHCO3- treated biomass exhibited maximum dye uptake at pH 5-6. A larger amount of dye was removed by the pretreated biomass in the first 10 min of contact time and the equilibrium was established in 60 min for 50 mg/L of initial dye concentration. The optimum biosorption temperature was determined as 40 °C. Biosorption played main role in dye removal from aqueous solution in this study. The results indicate that the pretreated Penicilium sp. biomass can be used as an effective biosorbent to remove neutral red from aqueous solution.

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Journal articles on the topic 'Dye solution'

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