溶液生长的用于高效太阳能水分解的三维氧化亚铜网络。

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

作者信息

Kargar Alireza, Partokia Soheil Seena, Niu Mu Tong, Allameh Paniz, Yang Muchuan, May Salomón, Cheung Justin S, Sun Ke, Xu Ke, Wang Deli

机构信息

Department of Electrical and Computer Engineering, University of California-San Diego, La Jolla, CA, 92093, USA.

出版信息

Nanotechnology. 2014 May 23;25(20):205401. doi: 10.1088/0957-4484/25/20/205401. Epub 2014 Apr 30.

DOI:10.1088/0957-4484/25/20/205401

PMID:24784802

Abstract

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.

摘要

我们报道了一种简便的大规模溶液法制备氧化亚铜（Cu2O）纳米线/纳米棒及三维多孔Cu2O网络，并将其用作高效太阳能光解水光阴极的应用。详细研究了三维多孔Cu2O网络的生长机理和结构表征。在pH中性介质中研究了不同生长条件下制备的Cu2O电极的光阴极性能。与Cu2O纳米线/纳米棒光电极相比，多孔Cu2O网络光阴极表现出大的光电流、高的光谱光响应和入射光子-电流效率。通过应用多层金属氧化物保护，三维Cu2O网络的光电化学稳定性得到显著提高。