Indirect Z-Scheme BiOI/g-C3N4 Photocatalysts with Enhanced Photoreduction CO2 Activity under Visible Light Irradiation

ACS Applied Materials & Interfaces
Ji-Chao WangZhong-Jun Li

Abstract

Rational design and construction of Z-scheme photocatalysts has received much attention in the field of CO2 reduction because of its great potential to solve the current energy and environmental crises. In this study, a series of Z-scheme BiOI/g-C3N4 photocatalysts are synthesized and their photocatalytic performance for CO2 reduction to produce CO, H2 and/or CH4 is evaluated under visible light irradiation (λ > 400 nm). The results show that the as-synthesized composites exhibit more highly efficient photocatalytic activity than pure g-C3N4 and BiOI and that the product yields change remarkably depending on the reaction conditions such as irradiation light wavelength. Emphasis is placed on identifying how the charge transfers across the heterojunctions and an indirect Z-scheme charge transfer mechanism is verified by detecting the intermediate I3(-) ions. The reaction mechanism is further proposed based on the detection of the intermediate (•)OH and H2O2. This work may be useful for rationally designing of new types of Z-scheme photocatalyst and provide some illuminating insights into the Z-scheme transfer mechanism.

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Citations

Aug 16, 2016·Environmental Science and Pollution Research International·Yunjin YaoFengyu Wei
Nov 3, 2016·Small·Xin LiJun Xie
Mar 31, 2017·Physical Chemistry Chemical Physics : PCCP·Wen-Wu Dai, Zong-Yan Zhao
May 19, 2018·Dalton Transactions : an International Journal of Inorganic Chemistry·Zengyu YouHui Yang
Mar 3, 2020·Nanoscale Horizons : the Home for Rapid Reports of Exceptional Significance in Nanoscience and Nanotechnolgy·Matthias RebberDorota Koziej
Apr 25, 2017·Dalton Transactions : an International Journal of Inorganic Chemistry·Minjie ZhouXiaobo Chen
Jun 11, 2020·Environmental Science and Pollution Research International·Devina Rattan Paul, Satya Pal Nehra
Apr 22, 2020·Environmental Science and Pollution Research International·Maxwell Selase AkplePuttaswamy Madhusudan
Feb 6, 2020·Angewandte Chemie·Wenhao ZhangWee-Jun Ong
Oct 28, 2020·Nanoscale·Subhash Chandra ShitLi-Chyong Chen
Mar 16, 2021·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·Weina ShiXiaowei Guo
Aug 25, 2020·Ecotoxicology and Environmental Safety·Junhong WangGuanghui Tian
Jun 2, 2018·ACS Applied Materials & Interfaces·Danlian HuangWenjing Xue
Feb 15, 2019·Chemical Reviews·Xin LiXiaobo Chen
Dec 30, 2017·ACS Applied Materials & Interfaces·Surendar TondaSatishchandra Ogale
Jun 4, 2020·ACS Central Science·Xingchen JiaoYi Xie

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