Fe3O4 mediated Z-scheme BiVO4/Cr2V4O13 strongly coupled nano-heterojunction for rapid degradation of fluoxetine under visible light

Sunil Kumar Sharma; Amit Kumar; Gaurav Sharma; Mu Naushad; Dai Viet N. Vo; Manawwer Alam; Florian J. Stadler

doi:10.1016/j.matlet.2020.128650

Fe₃O₄ mediated Z-scheme BiVO₄/Cr₂V₄O₁₃ strongly coupled nano-heterojunction for rapid degradation of fluoxetine under visible light

Sunil Kumar Sharma, Amit Kumar^*, Gaurav Sharma, Mu Naushad, Dai Viet N. Vo, Manawwer Alam, Florian J. Stadler

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

Hybrid heterojunction photocatalysts dramatically improve the pharmaceutical wastewater treatment potential. In this work, we report construction of novel Fe₃O₄-BiVO₄/Cr₂V₄O₁₃ (FBC) with high interfacial transfer for visible and solar photo-degradation of fluoxetine (FX). Within 60 min of visible exposure, FBC removes 99.2% of FX and rate is ~ 8 times BiVO₄. The strongly coupled heterojunction leads high charge separation, interfacial charge transfer which attributes to the exceptional performance. Scavenging experiments and electron spin Resonance (ESR) probe suggest ^●OH and ^●O₂^– radicals as dominant species. The band structure and other experiments reveal a Z-scheme effective charge transfer is in action mediated by Fe₃O₄.

Original language	English
Article number	128650
Journal	Materials Letters
Volume	281
DOIs	https://doi.org/10.1016/j.matlet.2020.128650
State	Published - 15 Dec 2020
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2020 Elsevier B.V.

Keywords

BiVO/CrVO
Heterojunction
Pharmaceuticals
Photocatalysis
Z-scheme

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.matlet.2020.128650

Cite this

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title = "Fe3O4 mediated Z-scheme BiVO4/Cr2V4O13 strongly coupled nano-heterojunction for rapid degradation of fluoxetine under visible light",

abstract = "Hybrid heterojunction photocatalysts dramatically improve the pharmaceutical wastewater treatment potential. In this work, we report construction of novel Fe3O4-BiVO4/Cr2V4O13 (FBC) with high interfacial transfer for visible and solar photo-degradation of fluoxetine (FX). Within 60 min of visible exposure, FBC removes 99.2% of FX and rate is ~ 8 times BiVO4. The strongly coupled heterojunction leads high charge separation, interfacial charge transfer which attributes to the exceptional performance. Scavenging experiments and electron spin Resonance (ESR) probe suggest ●OH and ●O2– radicals as dominant species. The band structure and other experiments reveal a Z-scheme effective charge transfer is in action mediated by Fe3O4.",

keywords = "BiVO/CrVO, Heterojunction, Pharmaceuticals, Photocatalysis, Z-scheme",

author = "Sharma, {Sunil Kumar} and Amit Kumar and Gaurav Sharma and Mu Naushad and Vo, {Dai Viet N.} and Manawwer Alam and Stadler, {Florian J.}",

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AU - Sharma, Sunil Kumar

AU - Kumar, Amit

AU - Sharma, Gaurav

AU - Naushad, Mu

AU - Vo, Dai Viet N.

AU - Alam, Manawwer

AU - Stadler, Florian J.

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Y1 - 2020/12/15

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AB - Hybrid heterojunction photocatalysts dramatically improve the pharmaceutical wastewater treatment potential. In this work, we report construction of novel Fe3O4-BiVO4/Cr2V4O13 (FBC) with high interfacial transfer for visible and solar photo-degradation of fluoxetine (FX). Within 60 min of visible exposure, FBC removes 99.2% of FX and rate is ~ 8 times BiVO4. The strongly coupled heterojunction leads high charge separation, interfacial charge transfer which attributes to the exceptional performance. Scavenging experiments and electron spin Resonance (ESR) probe suggest ●OH and ●O2– radicals as dominant species. The band structure and other experiments reveal a Z-scheme effective charge transfer is in action mediated by Fe3O4.

KW - BiVO/CrVO

KW - Heterojunction

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KW - Photocatalysis

KW - Z-scheme

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