Oxidative energy storage behavior of a porous nanostructured TiO2-Ni(OH)(2) bilayer photocatalysis system

doi:10.1016/j.electacta.2010.11.097

IMR OpenIR

	Oxidative energy storage behavior of a porous nanostructured TiO2-Ni(OH)(2) bilayer photocatalysis system
	Lian, Hui-Qin 1; Wang, Jian-Ming 1; Xu, Lei 1; Zhang, Li-Ying 1; Shao, Hai-Bo 1; Zhang, Jian-Qing 1,2; Cao, Chu-Nan 1,2
通讯作者	Wang, Jian-Ming(wjm@zju.edu.cn)
	2011-02-01
发表期刊	ELECTROCHIMICA ACTA
ISSN	0013-4686
卷号	56 期号:5 页码:2074-2080
摘要	TiO2-Ni(OH)(2) bilayer electrodes were prepared by the cathodic electrodeposition of Ni(OH)(2) layer on a TiO2/ITO substrate. The porous Ni(OH)(2) layers were obtained at relatively high current densities (>= 1.0 mA cm(-2)), and the particle size increased with increasing the deposition current density. A porous nanostructured TiO2-Ni(OH)(2) bilayer was obtained at a current density of 1.0 mA cm(-2). The effects of OH- concentration in the electrolyte and surface structure in the Ni(OH)(2) layer on storage of the oxidative energy of TiO2 were investigated. In our experimental conditions the oxidative energy storage of an UV-irradiated TiO2 photocatalyst in Ni(OH)(2) was obviously enhanced in the electrolyte with 1.0 M OH-. The porous nanostructured TiO2-Ni(OH)(2) bilayer electrode showed the notably improved oxidative energy storage performance, resulting from its porous structure and nanostructured Ni(OH)(2) particles. The TiO2-Ni(OH)(2) bilayer electrode during UV irradiation exhibited much higher potentials and larger photocurrent than the TiO2/ITO electrode. The transition from Ni(OH)(2) to NiOOH under UV irradiation proceeded in the potential range of -0.5 to -0.2 V. much more negative than the Ni(OH)(2)/NiOOH redox potential. A possible mechanism on the oxidative energy storage of an UV-irradiated TiO2 photocatalyst in Ni(OH)(2) was proposed, and the related experimental results were discussed in terms of the suggested model. (C) 2010 Elsevier Ltd. All rights reserved.
关键词	Energy storage TiO2-Ni(OH)(2) bilayer Oxidation of Ni(OH)(2) Photoelectrochemical behavior
资助者	National Natural Science Foundation of China
DOI	10.1016/j.electacta.2010.11.097
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[50972128]
WOS研究方向	Electrochemistry
WOS类目	Electrochemistry
WOS记录号	WOS:000288227800023
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：14[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/107047
专题	中国科学院金属研究所
通讯作者	Wang, Jian-Ming
作者单位	1.Zhejiang Univ, Dept Chem, Hangzhou 310027, Zhejiang, Peoples R China 2.Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect Met, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Lian, Hui-Qin,Wang, Jian-Ming,Xu, Lei,et al. Oxidative energy storage behavior of a porous nanostructured TiO2-Ni(OH)(2) bilayer photocatalysis system[J]. ELECTROCHIMICA ACTA,2011,56(5):2074-2080.
APA	Lian, Hui-Qin.,Wang, Jian-Ming.,Xu, Lei.,Zhang, Li-Ying.,Shao, Hai-Bo.,...&Cao, Chu-Nan.(2011).Oxidative energy storage behavior of a porous nanostructured TiO2-Ni(OH)(2) bilayer photocatalysis system.ELECTROCHIMICA ACTA,56(5),2074-2080.
MLA	Lian, Hui-Qin,et al."Oxidative energy storage behavior of a porous nanostructured TiO2-Ni(OH)(2) bilayer photocatalysis system".ELECTROCHIMICA ACTA 56.5(2011):2074-2080.