Simultaneous hydrogen and peroxide production by photocatalytic water splitting

被引：80

作者：

Wang, Lichao ^{[1
,2
]}

Cao, Shuang ^{[1
]}

Guo, Kai ^{[1
]}

Wu, Zhijiao ^{[1
]}

Ma, Zhi ^{[2
]}

Piao, Lingyu ^{[1
]}

机构：

[1] Natl Ctr Nanosci & Technol, CAS Ctr Excellence Nanosci, CAS Key Lab Standardizat & Measurement Nanotechno, Beijing 100190, Peoples R China

[2] Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China

来源：

CHINESE JOURNAL OF CATALYSIS | 2019年 / 40卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Photocatalytic water splitting; Hydrogen; Hydrogen peroxide; Anatase TiO2; ELECTRON-TRANSFER; CARBON NITRIDE; ANATASE TIO2; METAL; EVOLUTION; H2O2; NANOPARTICLES; COCATALYSTS; TI3+;

D O I：

10.1016/S1872-2067(19)63274-2

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Photocatalytic oxidation of water is a promising method to realize large-scale H2O2 production without a hazardous and energy-intensive process. In this study, we introduce a Pt/TiO2(anatase) photocatalyst to construct a simple and environmentally friendly system to achieve simultaneous H-2 and H2O2 production. Both H-2 and H2O2 are high value chemicals, and their separation is automatic. Even without the assistance of a sacrificial agent, the system can reach an efficiency of 7410 and 5096 mu mol g(-1) h(-1)(first 1 h) for H-2 and H2O2, respectively, which is much higher than that of a commercial Pt/TiO2(anatase) system that has a similar morphology. This exceptional activity is attributed to the more favorable two-electron oxidation of water to H2O2, compared with the four-electron oxidation of water to O-2. (C) 2019, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.

引用

页码：470 / 475

页数：6

共 45 条

[1] Synergetic Enhancement of Light Harvesting and Charge Separation over Surface-Disorder-Engineered TiO2 Photonic Crystals [J].