UV-driven overall water splitting using unsupported gold nanoparticles as photocatalysts

被引：34

作者：

Tian, Bining ^{[2
,3
]}

Lei, Qin ^{[1
]}

Tian, Bin ^{[1
]}

Zhang, Wenxing ^{[1
]}

Cui, Yanxia ^{[1
]}

Tian, Yue ^{[1
,3
]}

机构：

[1] Taiyuan Univ Technol, Coll Phys & Optoelect, Minist Educ, Key Lab Adv Transducers & Intelligent Control Sys, Taiyuan 030024, Shanxi, Peoples R China

[2] Dalian Maritime Univ, Dept Phys, Dalian 116600, Peoples R China

[3] Lawrence Berkeley Natl Lab, Mol Foundry, Berkeley, CA 94720 USA

来源：

CHEMICAL COMMUNICATIONS | 2018年 / 54卷 / 15期

基金：

中国国家自然科学基金;

关键词：

VISIBLE-LIGHT; HYDROGEN GENERATION; OXIDATION; TRANSITION; ELECTRODES; EVOLUTION; ENERGY;

D O I：

10.1039/c7cc09770k

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We confirmed that Au nanoparticles (> 10 nm) exhibit photocatalytic overall water splitting into H-2 and O-2 simultaneously with a ratio close to 2 : 1 without the assistance of sacrificial electron donors and cocatalysts under UV illumination for the first time. The hydrogen production rate of 5.7 mu mol g(-1) h(-1) in pure water was achieved, which is higher than that of TiO2 nanoparticles (P25, 1.2 mu mol g(-1) h(-1)). The interband transitions from 5d (valence band) to 6sp (conduction band) are responsible for this photocatalytic activity over Au nanoparticles.

引用

页码：1845 / 1848

页数：4

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