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作者:

Sang, Lixia (Sang, Lixia.) (学者:桑丽霞) | Ge, Hao (Ge, Hao.) | Sun, Baowei (Sun, Baowei.)

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EI Scopus SCIE

摘要:

Decoration of semiconductors with plasmonic nanoparticles provides a new direction for efficient solar water splitting for hydrogen production. Herein, Ag nanoparticles as the plasmonic metal were electrodeposited on a TiO2 nanotube arrays (TNTA) photoelectrode by controlling deposition-charge density. The resulting Ag/TNTA electrode with 10-50 nm diameter Ag nanoparticles exhibited a higher photocurrent density and hydrogen production rate than a bare TNTA electrode under AM 1.5 irradiation. The origins of this enhancement were explored by analyzing the photoelectrochemical behaviors with the relevant optical properties. The absorption of these Ag/TNTA electrodes in the visible light region increased owing to the surface plasmon resonance (SPR) effect of the Ag nano-particles, and only low photocurrent densities under visible light irradiation were observed. The overall enhancement is owing to the greater incident photon-to-electron conversion efficiency in the 300-400 nm range that is more dependent on the interfacial charge transfer from TNTA to Ag nanoparticles. The localized electronic field of the SPR also reduces the electron transport time in the Ag/TNTA electrodes. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

关键词:

Water splitting TiO2 Plasmonic Ag Charge transfer Electrodeposition

作者机构:

  • [ 1 ] [Sang, Lixia]Beijing Univ Technol, Key Lab Enhanced Heat Transfer & Energy Conservat, Key Lab Heat Transfer & Energy Conservat Beijing, Minist Educ,Dept Energy Sci & Engn,Coll Environm, Beijing 100124, Peoples R China
  • [ 2 ] [Ge, Hao]Beijing Univ Technol, Key Lab Enhanced Heat Transfer & Energy Conservat, Key Lab Heat Transfer & Energy Conservat Beijing, Minist Educ,Dept Energy Sci & Engn,Coll Environm, Beijing 100124, Peoples R China
  • [ 3 ] [Sun, Baowei]Beijing Univ Technol, Key Lab Enhanced Heat Transfer & Energy Conservat, Key Lab Heat Transfer & Energy Conservat Beijing, Minist Educ,Dept Energy Sci & Engn,Coll Environm, Beijing 100124, Peoples R China

通讯作者信息:

  • 桑丽霞

    [Sang, Lixia]Beijing Univ Technol, Key Lab Enhanced Heat Transfer & Energy Conservat, Key Lab Heat Transfer & Energy Conservat Beijing, Minist Educ,Dept Energy Sci & Engn,Coll Environm, Beijing 100124, Peoples R China

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来源 :

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY

ISSN: 0360-3199

年份: 2019

期: 30

卷: 44

页码: 15787-15794

7 . 2 0 0

JCR@2022

ESI学科: ENGINEERING;

ESI高被引阀值:136

JCR分区:2

被引次数:

WoS核心集被引频次: 24

SCOPUS被引频次: 23

ESI高被引论文在榜: 0 展开所有

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