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Nanomaterials, volume 11, issue 12, pages 3232

Amorphous mosxoy/h-bnxoy nanohybrids: Synthesis and dye photodegradation

Publication typeJournal Article
Publication date2021-11-28
Journal: Nanomaterials
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor5.3
ISSN20794991
General Chemical Engineering
General Materials Science
Abstract

Molybdenum sulfide is a very promising catalyst for the photodegradation of organic pollutants in water. Its photocatalytic activity arises from unsaturated sulfur bonds, and it increases with the introduction of structural defects and/or oxygen substitutions. Amorphous molybdenum sulfide (a-MoSxOy) with oxygen substitutions has many active sites, which create favorable conditions for enhanced catalytic activity. Here we present a new approach to the synthesis of a-MoSxOy and demonstrate its high activity in the photodegradation of the dye methylene blue (MB). The MoSxOy was deposited on hexagonal boron oxynitride (h-BNO) nanoflakes by reacting h-BNO, MoCl5, and H2S in dimethylformamide (DMF) at 250 °C. Both X-ray diffraction analysis and high-resolution TEM show the absence of crystalline order in a-MoSxOy. Based on the results of Raman and X-ray photoelectron spectroscopy, as well as analysis by the density functional theory (DFT) method, a chain structure of a-MoSxOy was proposed, consisting of MoS3 clusters with partial substitution of sulfur by oxygen. When a third of the sulfur atoms are replaced with oxygen, the band gap of a-MoSxOy is approximately 1.36 eV, and the valence and conduction bands are 0.74 eV and −0.62 eV, respectively (relative to a standard hydrogen electrode), which satisfies the conditions of photoinduced splitting of water. When illuminated with a mercury lamp, a-MoSxOy/h-BNxOy nanohybrids have a specific mass activity in MB photodegradation of approximately 5.51 mmol g−1 h−1, which is at least four times higher than so far reported values for nonmetal catalysts. The photocatalyst has been shown to be very stable and can be reused.

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Citations by publishers

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Matveev A. T. et al. Amorphous mosxoy/h-bnxoy nanohybrids: Synthesis and dye photodegradation // Nanomaterials. 2021. Vol. 11. No. 12. p. 3232.
GOST all authors (up to 50) Copy
Matveev A. T., Konopatsky A. S., Leybo D. V., Volkov S. N., Kovalskii A. M., Varlamova L. A., Sorokin P. B., Fang X., Kulinich S., Shtansky D. V. Amorphous mosxoy/h-bnxoy nanohybrids: Synthesis and dye photodegradation // Nanomaterials. 2021. Vol. 11. No. 12. p. 3232.
RIS |
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RIS Copy
TY - JOUR
DO - 10.3390/nano11123232
UR - https://doi.org/10.3390%2Fnano11123232
TI - Amorphous mosxoy/h-bnxoy nanohybrids: Synthesis and dye photodegradation
T2 - Nanomaterials
AU - Matveev, Andrei T
AU - Konopatsky, Anton S
AU - Kovalskii, Andrey M
AU - Sorokin, Pavel B.
AU - Varlamova, Liubov A
AU - Leybo, Denis V
AU - Fang, Xiaosheng
AU - Volkov, Sergey N
AU - Kulinich, Sergei A.
AU - Shtansky, Dmitry V.
PY - 2021
DA - 2021/11/28 00:00:00
PB - Multidisciplinary Digital Publishing Institute (MDPI)
SP - 3232
IS - 12
VL - 11
SN - 2079-4991
ER -
BibTex |
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BibTex Copy
@article{2021_Matveev
author = {Andrei T Matveev and Anton S Konopatsky and Andrey M Kovalskii and Pavel B. Sorokin and Liubov A Varlamova and Denis V Leybo and Xiaosheng Fang and Sergey N Volkov and Sergei A. Kulinich and Dmitry V. Shtansky},
title = {Amorphous mosxoy/h-bnxoy nanohybrids: Synthesis and dye photodegradation},
journal = {Nanomaterials},
year = {2021},
volume = {11},
publisher = {Multidisciplinary Digital Publishing Institute (MDPI)},
month = {nov},
url = {https://doi.org/10.3390%2Fnano11123232},
number = {12},
pages = {3232},
doi = {10.3390/nano11123232}
}
MLA
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MLA Copy
Matveev, Andrei T., et al. “Amorphous mosxoy/h-bnxoy nanohybrids: Synthesis and dye photodegradation.” Nanomaterials, vol. 11, no. 12, Nov. 2021, p. 3232. https://doi.org/10.3390%2Fnano11123232.
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