Sonochemical assisted impregnation of Bi2WO6 on TiO2 nanorod to form Z-scheme heterojunction for enhanced photocatalytic H2 production

A. R. Mahammed Shaheer; Nithya Thangavel; Revathy Rajan; Daniel Arulraj Abraham; R. Vinoth; K. R. Sunaja Devi; M. V. Shankar; B. Neppolian

doi:10.1016/j.apt.2021.10.022

Sonochemical assisted impregnation of Bi2WO6 on TiO2 nanorod to form Z-scheme heterojunction for enhanced photocatalytic H2 production

A. R. Mahammed Shaheer, Nithya Thangavel, Revathy Rajan, Daniel Arulraj Abraham, R. Vinoth, K. R. Sunaja Devi, M. V. Shankar, B. Neppolian

King Abdullah University of Science and Technology

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

28 Scopus citations

Abstract

In this work, Bi2WO6/TiO2 nanorod heterojunction was prepared by sonochemical assisted impregnation method. After loading 2 wt% Bi2WO6 on TiO2 nanorods, the photocatalytic hydrogen production rate of 2026 µmol/h/g was achieved. Compared to commercial P25 and TiO2 nanorods, ∼13 and ∼3 folds enhanced activity was observed. The excellent photocatalytic performance of Bi2WO6/TiO2 nanorod photocatalyst was mainly attributed to i) reduction of bandgap due to heterojunction formation, ii) quick transport of photogenerated charge carriers, and iii) efficient charge carrier separation supported by UV-DRS, photocurrent measurement, Impedance study, and photoluminescence spectra analysis. The Z-scheme band alignment for Bi2WO6/TiO2 nanorod heterojunction was proposed based on the Mott-Schottky measurement. This result demonstrated the effective utilization of Z-scheme heterojunction of Bi2WO6/TiO2 for photocatalytic reduction application.

Original language	English (US)
Journal	Advanced Powder Technology
DOIs	https://doi.org/10.1016/j.apt.2021.10.022
State	Published - Nov 3 2021

Bibliographical note

KAUST Repository Item: Exported on 2021-11-25
Acknowledgements: The authors sincerely express thanks to the Ministry of New and Renewable Energy (MNRE), New Delhi, India (File No.103/239/2015-NT). A. R. M. Shaheer gratefully acknowledges CSIR-India for Direct-Senior Research Fellowship (no.: 09/1045(0035)2K19 EMR-I Dated 31/03/19).

ASJC Scopus subject areas

Mechanics of Materials
General Chemical Engineering

UN SDGs

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

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10.1016/j.apt.2021.10.022

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@article{309bf6f1da96441294e18a05bd8b20c9,

title = "Sonochemical assisted impregnation of Bi2WO6 on TiO2 nanorod to form Z-scheme heterojunction for enhanced photocatalytic H2 production",

abstract = "In this work, Bi2WO6/TiO2 nanorod heterojunction was prepared by sonochemical assisted impregnation method. After loading 2 wt% Bi2WO6 on TiO2 nanorods, the photocatalytic hydrogen production rate of 2026 µmol/h/g was achieved. Compared to commercial P25 and TiO2 nanorods, ∼13 and ∼3 folds enhanced activity was observed. The excellent photocatalytic performance of Bi2WO6/TiO2 nanorod photocatalyst was mainly attributed to i) reduction of bandgap due to heterojunction formation, ii) quick transport of photogenerated charge carriers, and iii) efficient charge carrier separation supported by UV-DRS, photocurrent measurement, Impedance study, and photoluminescence spectra analysis. The Z-scheme band alignment for Bi2WO6/TiO2 nanorod heterojunction was proposed based on the Mott-Schottky measurement. This result demonstrated the effective utilization of Z-scheme heterojunction of Bi2WO6/TiO2 for photocatalytic reduction application.",

author = "{Mahammed Shaheer}, {A. R.} and Nithya Thangavel and Revathy Rajan and Abraham, {Daniel Arulraj} and R. Vinoth and {Sunaja Devi}, {K. R.} and Shankar, {M. V.} and B. Neppolian",

note = "KAUST Repository Item: Exported on 2021-11-25 Acknowledgements: The authors sincerely express thanks to the Ministry of New and Renewable Energy (MNRE), New Delhi, India (File No.103/239/2015-NT). A. R. M. Shaheer gratefully acknowledges CSIR-India for Direct-Senior Research Fellowship (no.: 09/1045(0035)2K19 EMR-I Dated 31/03/19).",

year = "2021",

month = nov,

day = "3",

doi = "10.1016/j.apt.2021.10.022",

language = "English (US)",

journal = "Advanced Powder Technology",

issn = "1568-5527",

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TY - JOUR

T1 - Sonochemical assisted impregnation of Bi2WO6 on TiO2 nanorod to form Z-scheme heterojunction for enhanced photocatalytic H2 production

AU - Mahammed Shaheer, A. R.

AU - Thangavel, Nithya

AU - Rajan, Revathy

AU - Abraham, Daniel Arulraj

AU - Vinoth, R.

AU - Sunaja Devi, K. R.

AU - Shankar, M. V.

AU - Neppolian, B.

N1 - KAUST Repository Item: Exported on 2021-11-25 Acknowledgements: The authors sincerely express thanks to the Ministry of New and Renewable Energy (MNRE), New Delhi, India (File No.103/239/2015-NT). A. R. M. Shaheer gratefully acknowledges CSIR-India for Direct-Senior Research Fellowship (no.: 09/1045(0035)2K19 EMR-I Dated 31/03/19).

PY - 2021/11/3

Y1 - 2021/11/3

N2 - In this work, Bi2WO6/TiO2 nanorod heterojunction was prepared by sonochemical assisted impregnation method. After loading 2 wt% Bi2WO6 on TiO2 nanorods, the photocatalytic hydrogen production rate of 2026 µmol/h/g was achieved. Compared to commercial P25 and TiO2 nanorods, ∼13 and ∼3 folds enhanced activity was observed. The excellent photocatalytic performance of Bi2WO6/TiO2 nanorod photocatalyst was mainly attributed to i) reduction of bandgap due to heterojunction formation, ii) quick transport of photogenerated charge carriers, and iii) efficient charge carrier separation supported by UV-DRS, photocurrent measurement, Impedance study, and photoluminescence spectra analysis. The Z-scheme band alignment for Bi2WO6/TiO2 nanorod heterojunction was proposed based on the Mott-Schottky measurement. This result demonstrated the effective utilization of Z-scheme heterojunction of Bi2WO6/TiO2 for photocatalytic reduction application.

AB - In this work, Bi2WO6/TiO2 nanorod heterojunction was prepared by sonochemical assisted impregnation method. After loading 2 wt% Bi2WO6 on TiO2 nanorods, the photocatalytic hydrogen production rate of 2026 µmol/h/g was achieved. Compared to commercial P25 and TiO2 nanorods, ∼13 and ∼3 folds enhanced activity was observed. The excellent photocatalytic performance of Bi2WO6/TiO2 nanorod photocatalyst was mainly attributed to i) reduction of bandgap due to heterojunction formation, ii) quick transport of photogenerated charge carriers, and iii) efficient charge carrier separation supported by UV-DRS, photocurrent measurement, Impedance study, and photoluminescence spectra analysis. The Z-scheme band alignment for Bi2WO6/TiO2 nanorod heterojunction was proposed based on the Mott-Schottky measurement. This result demonstrated the effective utilization of Z-scheme heterojunction of Bi2WO6/TiO2 for photocatalytic reduction application.

UR - http://hdl.handle.net/10754/673751

UR - https://linkinghub.elsevier.com/retrieve/pii/S0921883121005100

UR - http://www.scopus.com/inward/record.url?scp=85118777387&partnerID=8YFLogxK

U2 - 10.1016/j.apt.2021.10.022

DO - 10.1016/j.apt.2021.10.022

M3 - Article

SN - 1568-5527

JO - Advanced Powder Technology

JF - Advanced Powder Technology

ER -

Sonochemical assisted impregnation of Bi2WO6 on TiO2 nanorod to form Z-scheme heterojunction for enhanced photocatalytic H2 production

Abstract

Bibliographical note

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UN SDGs

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