Photoelectrocatalytic Hydrogen Generation Enabled by CdS Passivated ZnCuInSe Quantum Dot-Sensitized TiO2 Decorated with Ag Nanoparticles

被引：14

作者：

Li, Weili ^{[1
]}

Geng, Hongchao ^{[1
,2
]}

Yao, Lu ^{[1
,3
]}

Cao, Kesheng ^{[1
]}

Sheng, Pengtao ^{[1
]}

Cai, Qingyun ^{[2
]}

机构：

[1] Pingdingshan Univ, Coll Chem & Environm Engn, Pingdingshan 467000, Peoples R China

[2] Hunan Univ, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Hunan, Peoples R China

[3] Zhengzhou Univ, Coll Chem & Mol Engn, Zhengzhou 450000, Henan, Peoples R China

来源：

NANOMATERIALS | 2019年 / 9卷 / 03期

基金：

中国国家自然科学基金;

关键词：

ZCISe QDs; TiO2; nanowires; photocatalytic; hydrogen generation; PHOTOCATALYTIC ACTIVITY; CONVERSION EFFICIENCY; SOLAR-CELLS; ELECTRODES;

D O I：

10.3390/nano9030393

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Here we present the photoelectrocatalytic hydrogen generation properties of CdS passivated ZnCuInSe (ZCISe) quantum dots (QDs) supported by TiO2 nanowires decorated with Ag nanoparticles. In this configuration, Ag nanoparticles were sandwiched between the photo-electrons collector (TiO2) and photo-sensitizers (ZCISe), and acted as an electron relay speeding up the charge carrier transport. ZCISe and CdS enabled the optical absorption of the photoelectrode ranging from ultraviolet to near infrared region, which significantly enhanced the solar-to-chemical energy conversion efficiency. A photocurrent of 10.5 mA/cm(2) and a hydrogen production rate of about 52.9 mu mol/h were achieved under simulated sunlight (1.5 AG).

引用

页数：11

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