Efficient photoelectrochemical water splitting over Co3O4 and Co3O4/Ag composite structure

被引：95

作者：

Hong, Tiantian ^{[1
]}

Liu, Zhifeng ^{[1
]}

Zheng, Xuerong ^{[2
]}

Zhang, Jing ^{[1
]}

Yan, Lu ^{[1
]}

机构：

[1] Tianjin Chengjian Univ, Sch Mat Sci & Engn, Tianjin 300384, Peoples R China

[2] Tianjin Univ, Minist Educ, Sch Mat Sci & Engn, Key Lab Adv Ceram & Machining Technol, Tianjin 300072, Peoples R China

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2017年 / 202卷

关键词：

Co3O4; Nanowires; Nanolayers; Ag; Photoelectrochemical water splitting; PERFORMANCE; PHOTOCATALYST; EVOLUTION; NANORODS;

D O I：

10.1016/j.apcatb.2016.09.053

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, Co3O4 with different morphologies of nanowires (NWs) and nanolayers (NLs) and Ag modified Co3O4 are prepared on ITO substrate via a facile and low-cost hydrothermal successfully. Co3O4/Ag composite structure served as photocathode applied in photoelectrochemical (PEC) water splitting presents efficient PEC activity for the first time. The enhanced optical and photoelectrochemical performance are characterized, the role of Ag nanoparticles is discussed. The photocurrent densities of Co3O4/Ag NWs and Co3O4/Ag NLs are up to -4.73 mA cm(-2) and -4.26 mA cm(-2), respectively. The improved PEC performance is attributed to a high light-harvesting efficiency, an expanded photoresponse range, accelerated holes mobility and increased interfacial photoelectrons transport of Ag nanoparticles. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：454 / 459

页数：6

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