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Oxidative energy storage behavior of a porous nanostructured TiO2-Ni(OH)(2) bilayer photocatalysis system
Lian, Hui-Qin1; Wang, Jian-Ming1; Xu, Lei1; Zhang, Li-Ying1; Shao, Hai-Bo1; Zhang, Jian-Qing1,2; Cao, Chu-Nan1,2
Corresponding AuthorWang, Jian-Ming(wjm@zju.edu.cn)
2011-02-01
Source PublicationELECTROCHIMICA ACTA
ISSN0013-4686
Volume56Issue:5Pages:2074-2080
AbstractTiO2-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.
KeywordEnergy storage TiO2-Ni(OH)(2) bilayer Oxidation of Ni(OH)(2) Photoelectrochemical behavior
Funding OrganizationNational Natural Science Foundation of China
DOI10.1016/j.electacta.2010.11.097
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[50972128]
WOS Research AreaElectrochemistry
WOS SubjectElectrochemistry
WOS IDWOS:000288227800023
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:13[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/107047
Collection中国科学院金属研究所
Corresponding AuthorWang, Jian-Ming
Affiliation1.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
Recommended Citation
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.
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