文献类型：期刊文献

英文题名：Facile Synthesis of Ag / Amorphous Tio2 Schottky Junction with Improved Photocatalytic Hydrogen Production Via Uv Irradiation

作者：Yuan, Binxia[1,2]; Luo, Zige[1]; Luan, Weiling[2]; Lan, Cao[1]; Zhu, Rui[1]; Wang, Daolei[1]

机构：[1] College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai, 200090, China; [2] School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, 200237, China

年份：2022

外文期刊名：SSRN

收录：EI(收录号：20220087497)

语种：英文

外文关键词：Charge transfer - Deposition - Electron transitions - Hole concentration - Hydrogen production - Irradiation - Light absorption - Metal nanoparticles - Photocatalytic activity - Pore structure - Schottky barrier diodes

摘要：TiO2 has the characteristics of low cost and good optical stability, but its light absorption range is narrow and its electrons are easy to compound. The addition of metal nanoparticles can help to improve its charge transfer rate and improve its catalytic performance. In the paper, amorphous TiO2 pore structure was obtained by using PVP as template, and then Ag was deposited on the surface of TiO2 through a simple ultraviolet light illumination. With increase of irradiation time, the distribution and deposition state of Ag particles were different. Through the electrochemical test, it was found that the deposition of Ag particles in a-TiO2 decreased impedance and improved the hole-electron pairs separation efficiency and carrier concentration. After 15 h irradiation, Ag/a-TiO2 composite can form a uniform Schottky barrier, and its photocatalytic hydrogen production effect was the best. Finally, the electron transfer mechanism of Ag/a-TiO2 was explained. ? 2022, The Authors. All rights reserved.