TiO₂/FePS₃ S-Scheme Heterojunction for Greatly Raised Photocatalytic Hydrogen Evolution
Files
(Published version)
Date
2022
Authors
Xia, B.
He, B.
Zhang, J.
Li, L.
Zhang, Y.
Yu, J.
Ran, J.
Qiao, S.Z.
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Journal article
Citation
Advanced Energy Materials, 2022; 12(46):1-12
Statement of Responsibility
Bingquan Xia, Bowen He, Jianjun Zhang, Laiquan Li, Yanzhao Zhang, Jiaguo Yu, Jingrun Ran, and Shi-Zhang Qiao
Conference Name
Abstract
The aggravating extreme climate changes and natural disasters stimulate the exploration of low-carbon/zero-carbon alternatives to traditional carbonbased fossil fuels. Solar-to-hydrogen (STH) transformation is considered as appealing route to convert renewable solar energy into carbon-free hydrogen. Restricted by the low efficiency and high cost of noble metal cocatalysts, high-performance and cost-effective photocatalysts are required to realize the realistic STH transformation. Herein, the 2D FePS3 (FPS) nanosheets anchored with TiO2 nanoparticles (TiO2/FePS3) are synthesized and tested for the photocatalytic hydrogen evolution reaction. With the integration of FPS, the photocatalytic H2-evolution rate on TiO2/FePS3 is radically increased by ≈1686%, much faster than that of TiO2 alone. The origin of the greatly raised activity is revealed by theoretical calculations and various advanced characterizations, such as transient-state photoluminescence spectroscopy/ surface photovoltage spectroscopy, in situ atomic force microscopy combined with Kelvin probe force microscopy (AFM-KPFM), in situ X-ray photoelectron spectroscopy (XPS), and synchrotron-based X-ray absorption near edge structure. Especially, the in situ AFM-KPFM and in situ XPS together confirm the electron transport pathway in TiO2/FePS3 with light illumination, unveiling the efficient separation/transfer of charge carrier in TiO2/FePS3 step-scheme heterojunction. This work sheds light on designing and fabricating novel 2D material-based S-scheme heterojunctions in photocatalysis.
School/Discipline
Dissertation Note
Provenance
Description
Published online: December 2022
Access Status
Rights
© 2022 The Authors. Advanced Energy Materials published by Wiley- VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.