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Articoli di riviste sul tema "AgInS₂"

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Autore: Grafiati
Pubblicato: 8 giugno 2024

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1

Chen, Siqi, Violeta Demillo, Minggen Lu e Xiaoshan Zhu. "Preparation of photoluminescence tunable Cu-doped AgInS2 and AgInS2/ZnS nanocrystals and their application as cellular imaging probes". RSC Advances 6, n. 56 (2016): 51161–70. http://dx.doi.org/10.1039/c6ra09494e.

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2

Panneerselvam, Pratheep, e Subramania Angaiah. "The hole transporting behaviour of Cu2AgInS4 and Cu2AgInSe4 for a carbon electrode-based perovskite solar cell". New Journal of Chemistry 45, n. 1 (2021): 423–30. http://dx.doi.org/10.1039/d0nj04175k.

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Abstract (sommario):
In this work, quaternary Cu2AgInS4 (CAIS) and Cu2AgInSe4 (CAISe) nanoparticles (NPs) were synthesised by a simple hot injection method and their photovoltaic behaviour were studied in detail for PSC.
3

Jin, Hui, Rijun Gui, Zonghua Wang, Jianfei Xia, Min Yang, Feifei Zhang e Sai Bi. "Retracted Article: Facile fabrication of water-dispersible AgInS2 quantum dots and mesoporous AgInS2 nanospheres with visible photoluminescence". RSC Advances 5, n. 84 (2015): 68287–92. http://dx.doi.org/10.1039/c5ra11545k.

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4

Cichy, Bartłomiej, Dominika Wawrzynczyk, Marek Samoc e Wiesław Stręk. "Electronic properties and third-order optical nonlinearities in tetragonal chalcopyrite AgInS2, AgInS2/ZnS and cubic spinel AgIn5S8, AgIn5S8/ZnS quantum dots". Journal of Materials Chemistry C 5, n. 1 (2017): 149–58. http://dx.doi.org/10.1039/c6tc03854a.

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Abstract (sommario):
Electronic as well as third-order nonlinear optical properties of chalcopyrite AgInS2 and non-stoichiometric spinel AgIn5S8 quantum dots compared with corresponding Zn2+ alloyed compounds are presented in this work.
5

Fisher, Laura. "Retraction: Facile fabrication of water-dispersible AgInS2 quantum dots and mesoporous AgInS2 nanospheres with visible photoluminescence". RSC Advances 10, n. 62 (2020): 37819. http://dx.doi.org/10.1039/d0ra90105a.

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Retraction of ‘Facile fabrication of water-dispersible AgInS2 quantum dots and mesoporous AgInS2 nanospheres with visible photoluminescence’ by Hui Jin et al., RSC Adv., 2015, 5, 68287–68292. DOI: 10.1039/C5RA11545K
6

Kowalik, Patrycja, Sebastian G. Mucha, Katarzyna Matczyszyn, Piotr Bujak, Leszek M. Mazur, Andrzej Ostrowski, Angelika Kmita, Marta Gajewska e Adam Pron. "Heterogeneity induced dual luminescence properties of AgInS2 and AgInS2–ZnS alloyed nanocrystals". Inorganic Chemistry Frontiers 8, n. 14 (2021): 3450–62. http://dx.doi.org/10.1039/d1qi00566a.

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Abstract (sommario):
In the PL spectra of heterogeneous nanocrystals (In2S3–AgInS2 and In2S3–AgInS2–ZnS) two distinctly different peaks could be found at 430 and 710–515 nm.
7

Xiong, Qian, Jinlong Yang, Huaiyi Ding, Juan Du, Xiaosheng Tang, Tongchao Shi, Zhengzheng Liu, Daofu Wu, Hao Lin e Yuxin Leng. "Low-threshold amplification of spontaneous emission from AgInS2 quantum dots". Journal of Materials Chemistry C 8, n. 25 (2020): 8515–20. http://dx.doi.org/10.1039/d0tc02192j.

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8

Nong, Jinpeng, Guilian Lan, Weifeng Jin, Peng Luo, Caicheng Guo, Xiaosheng Tang, Zhigang Zang e Wei Wei. "Eco-friendly and high-performance photoelectrochemical anode based on AgInS2 quantum dots embedded in 3D graphene nanowalls". Journal of Materials Chemistry C 7, n. 32 (2019): 9830–39. http://dx.doi.org/10.1039/c9tc01395d.

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9

Wang, Yuanqiang, Qinghong Zhang, Yaogang Li e Hongzhi Wang. "Preparation of AgInS2 quantum dot/In2S3 co-sensitized photoelectrodes by a facile aqueous-phase synthesis route and their photovoltaic performance". Nanoscale 7, n. 14 (2015): 6185–92. http://dx.doi.org/10.1039/c4nr06458e.

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10

Shamirian, Armen, Oliver Appelbe, Qingbei Zhang, Balaji Ganesh, Stephen J. Kron e Preston T. Snee. "A toolkit for bioimaging using near-infrared AgInS2/ZnS quantum dots". Journal of Materials Chemistry B 3, n. 41 (2015): 8188–96. http://dx.doi.org/10.1039/c5tb00247h.

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11

Chevallier, Théo, Gilles Le Blevennec e Frédéric Chandezon. "Photoluminescence properties of AgInS2–ZnS nanocrystals: the critical role of the surface". Nanoscale 8, n. 14 (2016): 7612–20. http://dx.doi.org/10.1039/c5nr07082a.

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12

Lee, Fang-Yun, Kai-Yu Yang, Yi-Chen Wang, Chien-Hung Li, T. Randall Lee e Tai-Chou Lee. "Electrochemical properties of an AgInS2 photoanode prepared using ultrasonic-assisted chemical bath deposition". RSC Adv. 4, n. 66 (2014): 35215–23. http://dx.doi.org/10.1039/c4ra01728e.

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13

Kowalik, Patrycja, Mateusz Penkala, Piotr Bujak, Angelika Kmita, Marta Gajewska, Andrzej Ostrowski, Aneta Slodek e Adam Pron. "From Ag2S to luminescent Ag–In–S nanocrystals via an ultrasonic method – an in situ synthesis study in an NMR tube". Journal of Materials Chemistry C 8, n. 26 (2020): 8942–52. http://dx.doi.org/10.1039/d0tc01880e.

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14

Zeng, Bin, Fei Chen, Zhenyang Liu, Zhongyuan Guan, Xu Li, Feng Teng e Aiwei Tang. "Seeded-mediated growth of ternary Ag–In–S and quaternary Ag–In–Zn–S nanocrystals from binary Ag2S seeds and the composition-tunable optical properties". Journal of Materials Chemistry C 7, n. 5 (2019): 1307–15. http://dx.doi.org/10.1039/c8tc05755a.

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Abstract (sommario):
Ternary AgInS2 and quaternary Ag–In–Zn–S nanocrystals, which could be partially exchanged with either In3+ or Zn2+ ions, were synthesized by using a seeded-mediated growth method.
15

Kurshanov, D. A., Yu A. Gromova, S. A. Cherevkov, E. V. Ushakova, T. K. Kormilina, A. Dubavik, A. V. Fedorov e A. V. Baranov. "Non-toxic ternary quantum dots AgInS-=SUB=-2-=/SUB=- and AgInS-=SUB=-2-=/SUB=-/ZnS: synthesis and optical properties-=SUP=-*-=/SUP=-". Журнал технической физики 125, n. 12 (2018): 844. http://dx.doi.org/10.21883/os.2018.12.46949.248-18.

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16

Kottayi, Roopakala, Pratheep Panneerselvam, Nisha Singh, Vignesh Murugadoss, Ramdasse Sittaramane e Subramania Angaiah. "Influence of a bifunctional linker on the loading of Cu2AgInS4 QDs onto porous TiO2 NFs to use as an efficient photoanode to boost the photoconversion efficiency of QDSCs". New Journal of Chemistry 44, n. 30 (2020): 13148–56. http://dx.doi.org/10.1039/d0nj01699c.

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Abstract (sommario):
Quaternary Cu2AgInS4 quantum dots anchored more onto porous TiO2 NFs through a linker, 3-mercaptopropionic acid exhibits higher photoconversion efficiency of QDSC than that of the same anchored without a linker.
17

Jagadeeswararao, Metikoti, Sunita Dey, Angshuman Nag e C. N. R. Rao. "Visible light-induced hydrogen generation using colloidal (ZnS)0.4(AgInS2)0.6 nanocrystals capped by S2− ions". Journal of Materials Chemistry A 3, n. 16 (2015): 8276–79. http://dx.doi.org/10.1039/c5ta01240f.

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Abstract (sommario):
Non-toxic and visible-light active S2−-capped (ZnS)0.4(AgInS2)0.6 nanocrystals exhibit high photocatalytic activity for H2 evolution from water without requiring any co-catalyst.
18

Bose, Riya, Goutam Manna, Santanu Jana e Narayan Pradhan. "Ag2S–AgInS2: p–n junction heteronanostructures with quasi type-II band alignment". Chem. Commun. 50, n. 23 (2014): 3074–77. http://dx.doi.org/10.1039/c3cc48903e.

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Abstract (sommario):
A single nanostructure p–n junction diode has been fabricated colloidally by synthesizing a heterostructure comprising of p-type Ag2S and n-type AgInS2, where the quasi type-II band alignment of the constituents further improve charge separation.
19

Fahmi, Mochamad Zakki, Keng-Liang Ou, Jem-Kun Chen, Ming-Hua Ho, Shin-Hwa Tzing e Jia-Yaw Chang. "Development of bovine serum albumin-modified hybrid nanoclusters for magnetofluorescence imaging and drug delivery". RSC Adv. 4, n. 62 (2014): 32762–72. http://dx.doi.org/10.1039/c4ra05785f.

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Abstract (sommario):
Magnetofluorescent nanoclusters containing oil-soluble nanoparticles of MnFe2O4 and AgInS2–ZnS QDs are prepared. The nanoclusters possess photoluminescent and magnetic properties as well as an excellent specific targeting and drug delivery capability on HeLa cancer cell.
20

Zhao, Peng, Jing Zhang, Yihua Zhu, Xiaoling Yang, Xin Jiang, Yuan Yuan, Changsheng Liu e Chunzhong Li. "A novel strategy for the aqueous synthesis of down-/up-conversion nanocomposites for dual-modal cell imaging and drug delivery". J. Mater. Chem. B 2, n. 47 (2014): 8372–77. http://dx.doi.org/10.1039/c4tb01445f.

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A highly efficient multifunctional nanoplatform for dual-modal luminescence imaging and pH-responsive drug delivery has been developed on the basis of a facile and novel strategy by covalently binding up-conversion luminescent NaYF4:Yb,Er nanoparticles with down-conversion fluorescent AgInS2–ZnS quantum dots.
21

LIU, Hai-Tao, Jia-Song ZHONG, Xiao-Juan LIANG, Jing-Feng ZHANG e Wei-Dong XIANG. "L-cysteine-assisted Synthesis of AgInS2 Microspheres". Journal of Inorganic Materials 26, n. 11 (2 novembre 2011): 1221–26. http://dx.doi.org/10.3724/sp.j.1077.2011.11207.

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22

Fan, Xiaolei, e Kegao Liu. "Preparation of AgInS2 thin film by electrodeposition method". Ferroelectrics 597, n. 1 (10 settembre 2022): 44–51. http://dx.doi.org/10.1080/00150193.2022.2091997.

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23

Ryabko, A. A., O. A. Korepanov, A. A. Bobkov, O. A. Aleksandrova e V. A. Moshnikov. "ZnO nanorods coating modified with AgInS2 quantum dots". Journal of Physics: Conference Series 2086, n. 1 (1 dicembre 2021): 012034. http://dx.doi.org/10.1088/1742-6596/2086/1/012034.

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Abstract This paper presents the effect on the visible light photoresponse caused by the modification of ZnO nanorod coating with colloidal AgInS2 quantum dots. The modification of ZnO nanorods by immersion in colloidal solution results in the enhancement of visible absorption and photoresponse. Obtained results indicate the possibility of local heterojunctions between ZnO and AgInS2.
24

Yang, Wentao, Xiaoqun Gong e Jin Chang. "Development of Novel Cadmium-Free AgInS2 Semiconductor Nanoparticles". Journal of Nanoscience and Nanotechnology 16, n. 3 (1 marzo 2016): 2172–83. http://dx.doi.org/10.1166/jnn.2016.10946.

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25

Huberman, Ariana. "Jamie Agins Lincow. La distopía en las novelas de Ana María Shua." Revista Iberoamericana 86, n. 270 (9 marzo 2020): 379–80. http://dx.doi.org/10.5195/reviberoamer.2020.7912.

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26

Yin, Jianbo, e Xuefeng Lu. "Synthesis and Property Simulation of Orthorhombic Wurtzite AgInS2 Nanocrystals". Nanoscience and Nanotechnology Letters 7, n. 10 (1 ottobre 2015): 787–92. http://dx.doi.org/10.1166/nnl.2015.2035.

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27

Yuan, Binxia, Zige Luo, Yongjun Sun, Sheng Cao, Lan Cao e Min Li. "Study on synthesis and photoelectric properties of AgInS2 quantum dots". Polish Journal of Chemical Technology 24, n. 2 (1 giugno 2022): 21–26. http://dx.doi.org/10.2478/pjct-2022-0010.

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Abstract (sommario):
Abstract AgInS2 Quantum dots (AIS QDs) have high quantum yield and catalytic performance, which is promising materials in photo-catalytic and optoelectronic fields. In the paper, it adopted a simple and non-toxic method to synthesize AIS QDs. The effect of reaction temperature on the growth mechanism, optical and physical properties of AIS had been extensively investigated by using L-cysteine as the sulfur source, and their application in catalytic hydrogen production was also studied. The results demonstrated that the fluorescence properties will be quenched with the increase of temperature, indicating that the separation speed of electron hole pairs of samples obtained at higher temperature was faster. Meantime, the electron transport capacity and the photocurrent had also improved with the increase of reaction temperature. Finally, the sample obtained at 100 oC had higher hydrogen production rate.
28

Мазинг, Д. С., Н. М. Романов, В. А. Мошников, О. А. Александрова e О. А. Корепанов. "Исследование спектров фотолюминесценции нанокристаллов AgInS-=SUB=-2-=/SUB=-/ZnS при воздействии γ-излучения". Письма в журнал технической физики 45, n. 21 (2019): 34. http://dx.doi.org/10.21883/pjtf.2019.21.48471.17948.

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The effect of different doses of γ-radiation from a 137Cs source on photoluminescence of Ag-In-S nanocrystals covered with a shell of wider bandgap ZnS was investigated. The dynamics of changes in the nanocrystals photoluminescence depending on the dose of γ-radiation was shown. It was established that the AgInS2 / ZnS nanoparticles retain their photoluminescent properties and colloidal stability upon reaching the absorbed dose of 6 • 10^3 Gy (to water). Residual photoluminescence persisted when the absorbed dose reached 10^6 Gy. It was shown that AgInS2 / ZnS nanocrystals can be used in medical and biological studies in which increased resistance to gamma radiation is needed.
29

Sunil, M. Anantha, J. Nagaraju e G. Mohan Rao. "Tuning the opto-electrical properties of AgInS 2 films prepared by two- step process". Surfaces and Interfaces 10 (marzo 2018): 45–49. http://dx.doi.org/10.1016/j.surfin.2017.10.007.

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30

Phiwchai, Isara, Titipun Thongtem, Somchai Thongtem e Chalermchai Pilapong. "Deferoxamine-conjugated AgInS 2 nanoparticles as new nanodrug for synergistic therapy for hepatocellular carcinoma". International Journal of Pharmaceutics 524, n. 1-2 (maggio 2017): 30–40. http://dx.doi.org/10.1016/j.ijpharm.2017.03.058.

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31

Рябко, А. А., С. С. Налимова, Д. С. Мазинг, О. А. Корепанов, А. М. Гукетлов, О. А. Александрова, А. И. Максимов, В. А. Мошников, З. В. Шомахов e А. Н. Алешин. "Сенсибилизация наностержней ZnO коллоидными квантовыми точками AgInS-=SUB=-2-=/SUB=- для адсорбционных газовых сенсоров с фотоактивацией". Журнал технической физики 92, n. 6 (2022): 845. http://dx.doi.org/10.21883/jtf.2022.06.52514.15-22.

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Abstract (sommario):
A low-temperature technique for the formation of coatings based on ZnO nanorods decorated with colloidal AgInS2 quantum dots is presented. It is shown that ZnO nanocrystals and colloidal AgInS2 quantum dots with a shell of mercaptopropionic acid molecules form a heterojunction. Sensitization of ZnO nanorods with AgInS2 colloidal quantum dots to visible irradiation provides a gas analytical response of the structure to isopropyl alcohol vapor at room temperature under blue LED illumination with a peak wavelength of 460 nm.
32

Li, Xiang Qing, Dai Long Wei, Shi Zhao Kang e Jin Mu. "One-Pot Synthesis and Visible Light Photocatalytic Activity of AgIn5S8/AgInS2 Composite". Advanced Materials Research 734-737 (agosto 2013): 2314–17. http://dx.doi.org/10.4028/www.scientific.net/amr.734-737.2314.

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A composite of AgIn5S8/AgInS2was prepared in aqueous solution by a simple low temperature process using mercaptoacetic acid as capping agent and thioacetamide as sulfur source. The composite was characterized by Xray diffraction, scanning electron microscopy and energy dispersive X-ray analysis. The obtained AgIn5S8/AgInS2composite showed high visible photocatalytic activity for the degradation of methyl orange with 97.5% of degradation efficiency of methyl orange under visible irradiation for 10 min. Under same conditions, furthermore, the AgIn5S8/AgInS2composite displayed better stability than that of pure AgIn5S8and AgInS2.
33

Vitshima, Nozikumbuzo Anati, Bongiwe Silwana, Ncediwe Tsolekile e Mangaka C. Matoetoe. "Effect of ZnS coating on the optoelectronic properties of aqueous glutathione capped AgInS quantum dots". Journal of Alloys and Compounds 900 (aprile 2022): 163386. http://dx.doi.org/10.1016/j.jallcom.2021.163386.

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34

Maji, Swarup Kumar. "Luminescence-Tunable ZnS–AgInS2 Nanocrystals for Cancer Cell Imaging and Photodynamic Therapy". ACS Applied Bio Materials 5, n. 3 (18 febbraio 2022): 1230–38. http://dx.doi.org/10.1021/acsabm.1c01247.

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35

Ryabko A.A., Nalimova S.S., Mazing D.S, Korepanov O. A., Guketlov A.M., Aleksandrova О.A., Maximov A. I., Moshnikov V.A., Shomakhov Z.V. e Aleshin A.N. "Sensitization of ZnO nanorods by AgInS-=SUB=-2-=/SUB=- colloidal quantum dots for adsorption gas sensors with light activation". Technical Physics 92, n. 6 (2022): 717. http://dx.doi.org/10.21883/tp.2022.06.54418.15-22.

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A low-temperature technique for the formation of coatings based on ZnO nanorods decorated with colloidal AgInS2 quantum dots is presented. It is shown that ZnO nanocrystals and colloidal AgInS2 quantum dots with a shell of mercaptopropionic acid molecules form a heterojunction. Sensitization of ZnO nanorods with AgInS2 colloidal quantum dots to visible irradiation provides a gas analytical response of the structure to isopropyl alcohol vapor at room temperature under blue LED illumination with a peak wavelength of 460 nm. Keywords: adsorption gas sensors, photoactivation of gas sensitivity, zinc oxide nanorods, AgInS2 colloidal quantum dots, sensitization.
36

Li, Xueqin, Yangming Shi, Pinghua Chen, Yingchen Bai, Guifang Li, Hongying Shu, Dezhi Chen, Songjun Li e Hualin Jiang. "Multifunctional electrochemical application of a novel 3D AgInS 2 /rGO nanohybrid for electrochemical detection and HER". Journal of Chemical Technology & Biotechnology 94, n. 11 (10 settembre 2019): 3713–24. http://dx.doi.org/10.1002/jctb.6178.

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37

Kurshanov D.A., Arefina I. A., Stepanova M. S., Dubavik A. e Baranov A. V. "Effect of Fe-=SUB=-3-=/SUB=-O-=SUB=-4-=/SUB=- nanoparticle concentration on the luminescence of AgInS-=SUB=-2-=/SUB=-/ZnS in hybrid complex CaCO-=SUB=-3-=/SUB=--Fe-=SUB=-3-=/SUB=-O-=SUB=-4-=/SUB=-@AgInS-=SUB=-2-=/SUB=-/ZnS". Optics and Spectroscopy 130, n. 14 (2022): 2134. http://dx.doi.org/10.21883/eos.2022.14.53999.1418-21.

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In this paper, we studied the properties of a multifunctional system, in which the luminescent and magnetic properties are combined. The calcium carbonate microspheres are used as porous matrices for complexes combining luminescence properties of AgInS2/ZnS quantum dots and magnetic properties of Fe3O4 nanoparticles. The study investigates the effect of magnetic nanoparticles concentration on optical properties of quantum dots in CaCO3-Fe3O4@AgInS2/ZnS complexes. It is shown that applying calcium carbonate microspheres as a matrix permits to reduce quenching of the quantum dots luminescence. Keywords: hybrid system; ternary quantum dots, magnetic nanoparticles, iron oxide; calcium carbonate microspheres.
38

Kurshanov, D. A., I. A. Arefina, M. S. Stepanova, A. Dubavik e A. V. Baranov. "Effect of Fe-=SUB=-3-=/SUB=-O-=SUB=-4-=/SUB=- nanoparticle concentration on the luminescence of AgInS-=SUB=-2-=/SUB=-/ZnS in hybrid complex CaCO-=SUB=-3-=/SUB=--Fe-=SUB=-3-=/SUB=-O-=SUB=-4-=/SUB=-@AgInS-=SUB=-2-=/SUB=-/ZnS-=SUP=-*-=/SUP=-". Оптика и спектроскопия 129, n. 11 (2021): 1424. http://dx.doi.org/10.21883/os.2021.11.51649.1418-21.

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In this paper, we studied the properties of a multifunctional system, in which the luminescent and magnetic properties are combined. The calcium carbonate microspheres are used as porous matrices for complexes combining luminescence properties of AgInS2/ZnS quantum dots and magnetic properties of Fe3O4 nanoparticles. The study investigates the effect of magnetic nanoparticles concentration on optical properties of quantum dots in CaCO3-Fe3O4@AgInS2/ZnS complexes. It is shown that applying calcium carbonate microspheres as a matrix permits to reduce quenching of the quantum dots luminescence. Keywords: hybrid system; ternary quantum dots; magnetic nanoparticles; iron oxide; calcium carbonate microspheres.
39

Гордиенко, А. Б., e Д. И. Филиппов. "Электронная структура и ее дифференциальные характеристики для кристаллов OR-AgInS-=SUB=-2-=/SUB=- и TiO-=SUB=-2-=/SUB=-". Физика твердого тела 60, n. 5 (2018): 857. http://dx.doi.org/10.21883/ftt.2018.05.45777.325.

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AbstractThe electronic structures of orthorhombic silver–indium sulfide and rutile titanium oxide were calculated within the framework of density functional theory using the basis of numerical pseudoatomic orbitals in the LDA and GGA approximations. The features of their electron energy spectra and the character of chemical bonds were considered. The comparative analysis of obtained bandgap widths and effective masses determined for heavy electrons and holes in the Brillouin zone center on the basis of analytical derivatives of one-electron energies was performed.
40

Yang, Wentao, Weisheng Guo, Tingbin Zhang, Weitao Yang, Lin Su, Lei Fang, Hanjie Wang, Xiaoqun Gong e Jin Chang. "Synthesis of aqueous AgInS/ZnS@PEI as a self-indicating nonviral vector for plasmid DNA self-tracking delivery". Journal of Materials Chemistry B 3, n. 43 (2015): 8518–27. http://dx.doi.org/10.1039/c5tb01333j.

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41

Kameyama, Tatsuya, Shuhei Tsuneizumi, Taro Uematsu, Susumu Kuwabata e Tsukasa Torimoto. "(Invited) Effect of Cu Doping on the Energy Structure of Dumbbell-Shaped ZnS-AgInS2 Nanocrystals". ECS Meeting Abstracts MA2023-01, n. 37 (28 agosto 2023): 2133. http://dx.doi.org/10.1149/ma2023-01372133mtgabs.

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Abstract (sommario):
Colloidal semiconductor nanocrystals (NCs) have been intensively developed for applications in photovoltaics, light-emitting diodes, electroluminescent devices, and biological markers, due to their tunable light absorption and excellent light emission properties. Among them, group I-III-VI-based multinary semiconductor NCs, such as CuInS2, CuInSe2 and AgInS2, have received significant attention for the application to solar energy conversion systems because of their large absorption coefficient and low toxicity. Recently, we have successfully prepared ZnS-AgInS2 solid solution (ZAIS) NCs and optimized their photocatalytic activity for hydrogen production by tuning their chemical composition, size and particle morphology.1-3 The photocatalytic activity of ZAIS NCs was further enhanced by the formation of a dumbbell structure that had a type-II heterojunction at the interface between the tip and rod parts of the NCs.4 In this study, to further improve the photocatalytic activity of dumbbell-shaped ZAIS NCs, we attempted to tune the energy structure of the heterojunction by Cu doping in tip parts for effective charge separation. Rod-shaped ZAIS NCs with sizes of 4.0 × 23 nm were prepared by the previously reported method.3 The crystal growth of tip parts was carried out by heating a mixture of rod-shaped ZAIS NCs, Cu(OAc), Ag(OAc), In(OAc)3, and thiourea in an organic solvent, in which rod-shaped ZAIS NCs acted as a nucleus to form tip parts composed of (Cu y Ag(1-y)In) x Zn2(1-x)S2 solid solution. Thus-obtained dumbbell-shaped NCs were isolated from the resulting solution via size-selective precipitation. The amount of Cu doping in tip parts was controlled by changing the Cu content in metal precursors. TEM observations showed that obtained NCs had a dumbbell structure regardless of the Cu content in the metal precursor. Ellipsoidal NCs with sizes of 5.6 × 11 nm were deposited on both tips of rod-shaped ZAIS NCs. The absorption onset of the dumbbell-shaped NCs were red-shifted from 650 nm to 850 nm with an increase in the Cu fraction from y = 0 to 0.75. The photoelectron yield spectroscopy revealed that the conduction band minimum level was constant at ca. -3.2 eV, while the valence band maximum level was gradually shifted from -5.1 eV to -4.8 eV as the Cu fraction in tip parts increased from y = 0 to 0.75. Thus, it is concluded that the absorption property of dumbbell-shaped ZAIS NCs could be successfully extended from the visible to the near-IR region without changing the energy of photogenerated electrons, simply by modulating the degree of Cu doping in the tip parts. This tunability is useful for constructing efficient solar-light-driven photocatalysts for H2 evolution. T. Torimoto, T. Adachi, K. Okazaki, M. Sakuraoka, T. Shibayama, B. Ohtani, A. Kudo, S. Kuwabata, J. Am. Chem. Soc., 129 (2007) 12388-12389. T. Kameyama, T. Takahashi, T. Machida, Y. Kamiya, T. Yamamoto, S. Kuwabata, T. Torimoto, J. Phys. Chem. C, 119 (2015) 24740-24749. T. Torimoto, Y. Kamiya, T. Kameyama, H. Nishi, T. Uematsu, S. Kuwabata, T. Shibayama, ACS Appl. Mater. Inter., 8, (2016) 27151-27161. T. Kameyama, S. Koyama, T. Yamamoto, S. Kuwabata, T. Torimoto, J. Phys. Chem. C, 122 (2018) 13705-13715.
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Huang, Mao-Chia, Tsinghai Wang, Yao-Tien Tseng, Chien Chien, Fu-Wei Liu e Jing-Chie Lin. "Effect of Dipping Cycle on Photoelectrochemical Characteristic of Mix-Phase AgIn5S8/AgInS2 Thin Films Prepared via Chemical Process". Nanoscience and Nanotechnology Letters 7, n. 4 (1 aprile 2015): 297–301. http://dx.doi.org/10.1166/nnl.2015.1915.

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Torimoto, Tsukasa, Seiya Koyama, Tatsuya Kameyama e Susumu Kuwabata. "(Invited) Preparation of Dumbbell-Shaped Nanocrystals Composed of ZnS-AgInS2 Solid Solution and Their Photocatalytic H2 Evolution Activity". ECS Meeting Abstracts MA2018-01, n. 31 (13 aprile 2018): 1886. http://dx.doi.org/10.1149/ma2018-01/31/1886.

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Abstract (sommario):
I-III-VI2 ternary semiconductor nanocrystals, such as CuInS2 and AgInS2, exhibiting the quantum size effect have attracted much attention for the application to solar energy conversion systems because of their strong absorption coefficient and low toxicity. The optical properties of these particles are tunable by controlling the particle size. Recently we have successfully prepared anisotropic-shaped nanocrystals of ZnS-AgInS2 solid solution ((AgIn)xZn2(1-x)S2, ZAIS). Their photocatalytic H2 evolution activity could be controlled by the chemical composition as well as by the particle size,(1) and increased with particle morphology in the order of rice < sphere < rod.(2) On the other hand, the formation of type II heterojunction between different semiconductors was reported to be another strategy to enhance the photocatalytic activity of composite particles due to the effective charge separation of photogenerated electrons and holes at the heterojunction. In this study, we synthesize dumbbell-shaped nanocrystals composed of ZnS-AgInS2 solid solution (ZAIS) via epitaxial crystal growth in the solution phase, in which the heterojunction forms between rod- and rice-shaped parts in the nanocrystals. The photocatalytic activity of resulting nanocrystals is investigated for H2 evolution as a model reaction. Rod-shaped ZAIS nanocrystals with sizes of 4.1 × 23 nm as a precursor were prepared by the previously reported method.(2) These nanocrystals were heat-treated at 170 °C for 8 min in an oleylamine/1-dodecanethiol mixture solution containing AgCH3COO, In(CH3COO)3, and thiourea. Thus-obtained mixture nanocrystals were isolated from the resulting solution by adding methanol as a non-solvent. Dumbbell-shaped nanocrystals were separated from rice-shaped ones as a by-product with use of a size-selective precipitation technique. The photocatalytic activity for H2 evolution was investigated by the irradiation of dumbbell- and rice-shaped ZAIS nanocrystals in a mixture solution of water/2-propanol (1:1) containing Na2S as a hole scavenger with a Xe lamp (λ > 350 nm). The XRD analysis revealed that these ZAIS particles had a wurtzite crystal structure. With TEM measurements, we found that rice-shaped crystals with sizes of 5.6 × 11 nm were epitaxially grown on both the tips of rod-shaped ZAIS nanocrystals, resulting in the formation of dumbbell-shaped nanocrystals. The energy gap of dumbbell-shaped nanocrystals was determined to 1.9 eV from the absorption onset, being equal to that of freely dispersed nanocrystals with rice shape but lower than that of original rod-shaped ones, 2.8 eV. These suggested that the Zn content in rod-shaped parts of dumbbell-shaped nanocrystals was higher than that in rice-shaped parts of the same particles. By estimating the electronic energy structure of dumbbell-shaped ZAIS nanocrystals from those of corresponding rod- and rice-shaped nanocrystals, the heterojunction of type II structure was expected to form at the interface between rod- and rice-shaped parts in a dumbbell nanocrystal. ZAIS nanocrystals were dispersed in water/2-propanol solution and irradiated with a Xe lamp light. The H2 evolution was observed, the amount of which increased linearly with elapse of irradiation time. The H2 evolution rate of dumbbell nanocrystals was about four times larger than that of rice-shaped ones. These results indicated that the ZAIS nanocrystals worked as a photocatalyst and then the type II heterojunction in dumbbell-shaped nanocrystals induced the effective charge separation of photogenerated electrons and holes. Reference (1) T. Torimoto et al., J. Phys. Chem. C., 2015, 119, 24740-24749. (2) T. Torimoto et al., ACS Appl. Mater. Interfaces 2016 , 8, 27151-27161.
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Баранов, К. Н., Е. П. Колесова, М. А. Баранов e А. О. Орлова. "Генерация активных форм кислорода нанокомпозитами AgInS-=SUB=-2-=/SUB=-/TiO-=SUB=-2-=/SUB=- под действием излучения УФ и видимого диапазонов". Оптика и спектроскопия 130, n. 8 (2022): 1268. http://dx.doi.org/10.21883/os.2022.08.52914.3746-22.

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Abstract (sommario):
In this work, we synthesized nanocomposites consisting of an AgInS2 core and a nanostructured TiO2 shell. Primary characterization showed that, as a result of synthesis, particles with an average diameter of 12 nm and a TiO2 shell thickness of 4 nm were formed. It demonstrated that the synthesized nanocomposites can efficiently generate superoxide anion and hydroxyl radical under the influence of UV radiation and superoxide anion under the influence of visible radiation. Efficient generation of superoxide anion under the action of visible radiation lying in the TiO2 transparency range indicates efficient photoinduced electron transfer from the core to the shell of nanocomposites, and it makes such systems promising for the treatment of bacterial infections.
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Soheyli, Ehsan, Behnaz Ghaemi, Reza Sahraei, Zahra Sabzevari, Sharmin Kharrazi e Amir Amani. "Colloidal synthesis of tunably luminescent AgInS-based/ZnS core/shell quantum dots as biocompatible nano-probe for high-contrast fluorescence bioimaging". Materials Science and Engineering: C 111 (giugno 2020): 110807. http://dx.doi.org/10.1016/j.msec.2020.110807.

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Choi, Kang Sik, Bo Keuk Bang, Pan Kee Bae, Yong-Rok Kim e Chang Hae Kim. "Synthesis of Fe3O4–ZnS/AgInS2 Composite Nanoparticles Using a Hydrophobic Interaction". Journal of Nanoscience and Nanotechnology 13, n. 3 (1 marzo 2013): 1820–23. http://dx.doi.org/10.1166/jnn.2013.6993.

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Qi, Shihan, Zhuangzhuang Yin, Zhu Liu, Kang Xu, Miao Zhang e Zhaoqi Sun. "Construction of In2S3/Ag-Ag2S-AgInS2/TNR Nanoarrays with Excellent Photoelectrochemical and Photocatalytic Properties". Journal of The Electrochemical Society 168, n. 12 (1 dicembre 2021): 126517. http://dx.doi.org/10.1149/1945-7111/ac4056.

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Abstract (sommario):
In this work, a novel and efficient In2S3/Ag-Ag2S-AgInS2/TNR photocatalyst was successfully synthesized by a facile hydrothermal and wet chemical method. The In2S3/Ag-Ag2S-AgInS2/TNR has a greatly increased range of light absorption with sustained absorption intensity compared to the unmodified TNR arrays. In the photoelectrochemical test, the best transient photocurrent of the sample can reach 350 μA cm−2, which is 23.3 times higher than TNR (15 μA cm−2). In the photocatalytic degradation test of MO, In2S3/Ag-Ag2S-AgInS2/TNR exhibited the highest photocatalytic degradation efficiency which could reach 91.7%, 5.5 times higher than that of TNR (16.7%), much higher than many previously reported photocatalysts. The outstanding photoelectrochemical and photocatalytic properties of the samples is primarily owing to the formation of the core–shell structure and the synergistic effect of the composite material, which effectively facilitate the separation and migration of photogenerated electron-hole pairs and inhibit their recombination, thus enhancing the photoelectrochemical and photocatalytic performance.
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Huang, Mao-Chia, Tsinghai Wang, Ching-Chen Wu, Wen-Sheng Chang, Jing-Chie Lin, Wei-Hsuan Lan e Tzu-Hsiang Yen. "Structural, Optical, Photoelectrochemical Characteristics of p-Type Sb-Doped AgInS2 Thin Films Prepared by Chemical Bath Deposition Process". Nanoscience and Nanotechnology Letters 6, n. 6 (1 giugno 2014): 464–69. http://dx.doi.org/10.1166/nnl.2014.1786.

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Kottayi, Roopakala, Vignesh Murugadoss, Pratheep Panneerselvam, Ramadasse Sittaramane e Subramania Angaiah. "Cu 2 AgInS 2 Se 2 quantum dots sensitized porous TiO 2 nanofibers as a photoanode for high‐performance quantum dot sensitized solar cell". International Journal of Energy Research 45, n. 9 (4 aprile 2021): 13563–74. http://dx.doi.org/10.1002/er.6685.

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Zhang, Hui, Youshen Wu, Peng Tang, Hongrui Zhu, Zhenhai Gan, Hu‐Qin Zhang e Daocheng Wu. "Accurate and Real‐Time Detection Method for the Exothermic Behavior of Enzymatic Nano‐Microregions Using Temperature‐Sensitive Amino‐AgInS 2 Quantum Dots". Small Methods 6, n. 1 (10 novembre 2021): 2100811. http://dx.doi.org/10.1002/smtd.202100811.

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