文献类型：期刊文献

英文题名：CoNi bimetallic alloy cocatalyst-modified TiO2 nanoflowers with enhanced photocatalytic hydrogen evolution

作者：Liu, Qiaona[1];Han, Xin[1];Qian, An[1];Chen, Ying[2];Liu, Jichang[1,3];Li, Renjie[1];Pu, Xin[1];Ye, Lei[1];Jia, Xin[3];Wang, Rongjie[3];Li, Jiangbing[3];Zhao, Jigang[1];Sun, Hui[1];Ling, Hao[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, Shanghai 200237, Peoples R China;[2]SINOPEC Shanghai Engn Co Ltd SSEC, Shanghai 200120, Peoples R China;[3]Shihezi Univ, State Key Lab Incubat Base Green Proc Chem Engn, Sch Chem & Chem Engn, Shihezi 832003, Xinjiang, Peoples R China

年份：2023

卷号：48

期号：14

起止页码：5529

外文期刊名：INTERNATIONAL JOURNAL OF HYDROGEN ENERGY

收录：;EI(收录号：20224913215552);WOS:【SCI-EXPANDED(收录号:WOS:000926472800001)】；

基金：This work was supported by the National Natural Science Foundation of China (No.: 22108074, U1862204) . Xin Han was partly supported by Shanghai Super Postdoctoral Incentive Program.

语种：英文

外文关键词：TiO2 nanoflowers; PhotocatalyticH2 evolution; CoNi bimetal; Cocatalyst

摘要：In terms of improving photocatalytic hydrogen production performance, inexpensive and earth-rich cocatalysts have become promising alternatives to precious metals. Herein, a novel CoNi-TiO2 photocatalyst composed of TiO2 nanoflowers and CoNi alloy was pre-pared by hydrothermal and chemical reduction methods. Various characterizations and test results have confirmed that the further improvement of the photocatalytic perfor-mance of the CoNi-TiO2 photocatalyst is mainly due to the fact that the bimetallic CoNi alloy can accelerate charge transfer and inhibit the recombination of photo-induced car-riers. The hydrogen production rate of the prepared CoNi-TiO2 is about 24 times higher than that of the pristine TiO2, and its hydrogen production rate value can reach 6580.9 mmol g-1 h-1, and showing comparable photocatalytic performance to 0.5 wt% Pt-TiO2. In addition, combined with the characterization results, a probable mechanism for enhanced photocatalytic performance was proposed. This study provides favorable enlightenment for the design of a series of highly efficient non-precious metal TiO2-based photocatalysts.(c) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.