Solution-grown 3D Cu2O networks for efficient solar water splitting

被引：47

作者：

Kargar, Alireza ^{[1
]}

Partokia, Soheil Seena ^{[1
]}

Niu, Mu Tong ^{[2
]}

Allameh, Paniz ^{[1
]}

Yang, Muchuan ^{[1
]}

May, Salomon ^{[1
]}

Cheung, Justin S. ^{[1
]}

Sun, Ke ^{[1
]}

Xu, Ke ^{[2
]}

Wang, Deli ^{[1
,3
,4
]}

机构：

[1] Univ Calif San Diego, Dept Elect & Comp Engn, La Jolla, CA 92093 USA

[2] Chinese Acad Sci, Testing & Anal Ctr, Suzhou Inst Nanotech & Nanobion, Suzhou 215123, Peoples R China

[3] Univ Calif San Diego, Mat Sci & Engn Program, La Jolla, CA 92093 USA

[4] Univ Calif San Diego, Qualcomm Inst, La Jolla, CA 92093 USA

来源：

NANOTECHNOLOGY | 2014年 / 25卷 / 20期

基金：

美国国家科学基金会;

关键词：

cuprous oxide (Cu2O); 3D networks; solution growth; solar water splitting; hydrogen production; NANOTUBE ARRAYS; NANOWIRE ARRAYS; PHOTOCATHODE; FILMS;

D O I：

10.1088/0957-4484/25/20/205401

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We report a facile and large-scale solution fabrication of cuprous oxide (Cu2O) nanowires/nanorods and 3D porous Cu2O networks and their application as photocathodes for efficient solar water splitting. The growth mechanism and structural characterization of 3D porous Cu2O networks are studied in detail. The photocathodic performance of Cu2O electrodes prepared under different growth conditions is investigated in a pH-neutral medium. The porous Cu2O network photocathodes exhibit large photocurrent, high spectral photoresponse, and incident photon-to-current efficiency compared with Cu2O nanowire/nanorod photoelectrodes. The photoelectrochemical stability of the 3D Cu2O network is significantly improved by applying multi-layer metal oxide protection.

引用

页数：9

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