A Simple Fabrication of Sb2S3/TiO2 Photo-Anode with Long Wavelength Visible Light Absorption for Efficient Photoelectrochemical Water Oxidation-Reference-Cited by-同舟云学术

A Simple Fabrication of Sb2S3/TiO2 Photo-Anode with Long Wavelength Visible Light Absorption for Efficient Photoelectrochemical Water Oxidation

Published:2022-10-01 Issue:19 Volume:12 Page:3444
ISSN:2079-4991
Container-title:Nanomaterials
language:en
Short-container-title:Nanomaterials

Author:

Han Fei¹²³,Ma Sai²,Li Dong²,Alam Md¹^ORCID,Yang Zeheng¹

Affiliation:

1. School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China

2. School of Material Science and Engineering, North Minzu University, Yinchuan 750021, China

3. Key Laboratory of Polymer Materials and Manufacturing Technology, North Minzu University, Yinchuan 750021, China

Abstract

An Sb2S3-sensitized TiO2 (Sb2S3/TiO2) photo-anode (PA) exhibiting a high photo-electrochemical (PEC) performance in water oxidation has been successfully prepared by a simple chemical bath deposition (CBD) technique. Herein, the Raman spectra and XPS spectrum of Sb2S3/TiO2 confirmed the formation of Sb2S3 on the TiO2 coatings. The Sb2S3/TiO2 photo-anode significantly shifted the absorption edge from 395 nm (3.10 eV) to 650 nm (1.90 eV). Furthermore, the Sb2S3/TiO2 photo-anode generated a photo-anodic current under visible light irradiation below 650 nm due to the photo-electrochemical action compared with the TiO2 photo-anode at 390 nm. The incident photon-to-current conversion efficiency (IPCE = 7.7%) at 400 nm and −0.3 V vs. Ag/AgCl was 37 times higher than that (0.21%) of the TiO2 photo-anodes due to the low recombination rate and acceleration of the carriers of Sb2S3/TiO2. Moreover, the photo-anodic current and photostability of the Sb2S3/TiO2 photo-anodes improved via adding the Co2+ ions to the electrolyte solution during photo-electrocatalysis.

Funder

Natural Science Foundation of Ningxia Province

Publisher

MDPI AG

Subject

General Materials Science,General Chemical Engineering

Link

https://www.mdpi.com/2079-4991/12/19/3444/pdf

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