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Sunlight driven photocatalytic degradation of organic pollutants using a MnV(2)O(6)/BiVO(4) heterojunction: mechanistic perception and degradation pathways

In the field of photocatalysis, fabrication of a heterojunction structure with effective charge separation at the interface and charge shift to enhance the photocatalytic activity has acquired extensive consideration. In the present investigation, MnV(2)O(6)/BiVO(4) heterojunction samples with excel...

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Autores principales: Bano, Karina, Mittal, Susheel K., Singh, Prit Pal, Kaushal, Sandeep
Formato: Online Artículo Texto
Lenguaje:English
Publicado: RSC 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9419509/
https://www.ncbi.nlm.nih.gov/pubmed/36133498
http://dx.doi.org/10.1039/d1na00499a
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author Bano, Karina
Mittal, Susheel K.
Singh, Prit Pal
Kaushal, Sandeep
author_facet Bano, Karina
Mittal, Susheel K.
Singh, Prit Pal
Kaushal, Sandeep
author_sort Bano, Karina
collection PubMed
description In the field of photocatalysis, fabrication of a heterojunction structure with effective charge separation at the interface and charge shift to enhance the photocatalytic activity has acquired extensive consideration. In the present investigation, MnV(2)O(6)/BiVO(4) heterojunction samples with excellent photocatalytic performance under sunlight irradiation were conveniently synthesized by a hydrothermal technique, and characterized by UV-Vis, FTIR, XRD, FESEM, HRTEM, PL, BET and XPS techniques. The prepared samples were investigated as photocatalysts for degrading MB and RhB dyes under sunlight. Among various samples of MnV(2)O(6)/BiVO(4), the S-V hetero-junction sample exhibited maximum photocatalytic activity with 98% and 96% degradation of MB and RhB dyes, respectively, in 6 and 35 min. The high photocatalytic activity of MnV(2)O(6)/BiVO(4) may be due to the successful generation and shift of charges in the presence of visible light. The average reduction of chemical oxygen demand (COD) was found to be 75% after irradiation with direct sunlight. In the degradation process of dyes, superoxide anion radicals were the main responsive species, as revealed by trapping experiments. The degradation efficiency of MnV(2)O(6)/BiVO(4) heterojunction did not diminish even after four cycles. In addition, the catalytic performance of the fabricated heterojunction was also explored for reducing 4-nitrophenols (4-NP) by using NaBH(4). Absolute conversion of 4-NP to 4-aminophenol (4-AP) occurred without the production of intermediate byproducts.
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spelling pubmed-94195092022-09-20 Sunlight driven photocatalytic degradation of organic pollutants using a MnV(2)O(6)/BiVO(4) heterojunction: mechanistic perception and degradation pathways Bano, Karina Mittal, Susheel K. Singh, Prit Pal Kaushal, Sandeep Nanoscale Adv Chemistry In the field of photocatalysis, fabrication of a heterojunction structure with effective charge separation at the interface and charge shift to enhance the photocatalytic activity has acquired extensive consideration. In the present investigation, MnV(2)O(6)/BiVO(4) heterojunction samples with excellent photocatalytic performance under sunlight irradiation were conveniently synthesized by a hydrothermal technique, and characterized by UV-Vis, FTIR, XRD, FESEM, HRTEM, PL, BET and XPS techniques. The prepared samples were investigated as photocatalysts for degrading MB and RhB dyes under sunlight. Among various samples of MnV(2)O(6)/BiVO(4), the S-V hetero-junction sample exhibited maximum photocatalytic activity with 98% and 96% degradation of MB and RhB dyes, respectively, in 6 and 35 min. The high photocatalytic activity of MnV(2)O(6)/BiVO(4) may be due to the successful generation and shift of charges in the presence of visible light. The average reduction of chemical oxygen demand (COD) was found to be 75% after irradiation with direct sunlight. In the degradation process of dyes, superoxide anion radicals were the main responsive species, as revealed by trapping experiments. The degradation efficiency of MnV(2)O(6)/BiVO(4) heterojunction did not diminish even after four cycles. In addition, the catalytic performance of the fabricated heterojunction was also explored for reducing 4-nitrophenols (4-NP) by using NaBH(4). Absolute conversion of 4-NP to 4-aminophenol (4-AP) occurred without the production of intermediate byproducts. RSC 2021-09-01 /pmc/articles/PMC9419509/ /pubmed/36133498 http://dx.doi.org/10.1039/d1na00499a Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Bano, Karina
Mittal, Susheel K.
Singh, Prit Pal
Kaushal, Sandeep
Sunlight driven photocatalytic degradation of organic pollutants using a MnV(2)O(6)/BiVO(4) heterojunction: mechanistic perception and degradation pathways
title Sunlight driven photocatalytic degradation of organic pollutants using a MnV(2)O(6)/BiVO(4) heterojunction: mechanistic perception and degradation pathways
title_full Sunlight driven photocatalytic degradation of organic pollutants using a MnV(2)O(6)/BiVO(4) heterojunction: mechanistic perception and degradation pathways
title_fullStr Sunlight driven photocatalytic degradation of organic pollutants using a MnV(2)O(6)/BiVO(4) heterojunction: mechanistic perception and degradation pathways
title_full_unstemmed Sunlight driven photocatalytic degradation of organic pollutants using a MnV(2)O(6)/BiVO(4) heterojunction: mechanistic perception and degradation pathways
title_short Sunlight driven photocatalytic degradation of organic pollutants using a MnV(2)O(6)/BiVO(4) heterojunction: mechanistic perception and degradation pathways
title_sort sunlight driven photocatalytic degradation of organic pollutants using a mnv(2)o(6)/bivo(4) heterojunction: mechanistic perception and degradation pathways
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9419509/
https://www.ncbi.nlm.nih.gov/pubmed/36133498
http://dx.doi.org/10.1039/d1na00499a
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