Gathered sensitizer on the surface of catalyst by sodium polyacrylate for highly efficient photocatalytic hydrogen evolution

被引：9
作者：
Kong, Chao [1 ]
Han, Yan-xia [1 ]
Hou, Li-jie [1 ]
Li, Ying-ying [1 ]
机构：
[1] Longdong Univ, Coll Chem & Chem Engn, Qingyang 745000, Gansu, Peoples R China
来源：
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2017年 / 345卷
关键词：
Sodium polyacrylate; Platinum; Hydrogen evolution; Visible light; Sensitization; VISIBLE-LIGHT IRRADIATION; PLATINUM NANOPARTICLES; NANOTUBE PHOTOANODES; H-2; EVOLUTION; WATER; GRAPHENE; DYE; TIO2; STEP; AGGREGATION;
D O I：
10.1016/j.jphotochem.2017.05.034
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In this paper, sodium polyacrylate (PAAS) was used as an assistant to markedly enhance the hydrogen generation efficiency of Eosin Y (EY) sensitized Pt photocatalyst. The molecule chain of polyacrylic acid ion adsorbed on Pt could gather EY on the surface of Pt nanoparticles, thereby enhancing the contact of EY and Pt and the utilization of photo-generated electrons generated by EY under visible light irradiation. Therefore, sodium polyacrylate stabilized Pt nanoparticles showed 3.25 times higher hydrogen generation activity than Pt-EY under the same conditions. The highest AQE of EY-PAAS(1) (m(w)> 30 million)-Pt system was 34.3% at 520 nm. This result provided a new approach for improving the hydrogen evolution efficiency of photocatalytic system. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：92 / 97
页数：6
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