Revisiting Metal Electrodeposition in Porous Anodic Alumina: Toward Tailored Preparation of Metal Nanotube Arrays | Zendy

Aiqin Zhang | Zendy; Jiajing Zhou | Zendy; Paramita Das | Zendy; Yuanhua Xiao | Zendy; Feilong Gong | Zendy; Feng Li | Zendy; Lizhen Wang | Zendy; Linsen Zhang | Zendy; Lixia Wang | Zendy; Yang Cao | Zendy; Hongwei Duan | Zendy

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Revisiting Metal Electrodeposition in Porous Anodic Alumina: Toward Tailored Preparation of Metal Nanotube Arrays

Author(s) -

Aiqin Zhang,

Jiajing Zhou,

Paramita Das,

Yuanhua Xiao,

Feilong Gong,

Feng Li,

Lizhen Wang,

Linsen Zhang,

Lixia Wang,

Yang Cao,

Hongwei Duan

Publication year - 2018

Publication title -

journal of the electrochemical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.258

H-Index - 271

eISSN - 1945-7111

pISSN - 0013-4651

DOI - 10.1149/2.0651803jes

Subject(s) - materials science , metal , nanomaterials , nanotube , porosity , nanotechnology , chemical engineering , anode , crystallization , oxide , metal ions in aqueous solution , catalysis , nanostructure , carbon nanotube , metallurgy , electrode , composite material , chemistry , organic chemistry , engineering

Metal electrodeposition in porous anodic aluminum oxide (AAO) is a complicated and multi-step process, consisting of diffusion of metal ions in the pores, reduction of metal ions and crystallization of metal atoms. The growth mechanism is also complex and changing with electrodeposition conditions. In this paper, we present new insights into the growth of metal nanostructures in AAO via electrodeposition. Two different growth modes for metal electrodeposition in porous AAO, namely centre growth mode and lateral growth mode, are revealed, opening a new approach to preparing metal nanotube arrays with tailored structures. This strategy is broadly applicable to varieties of metals, such as Ni, Cu, and Ag. The resultant metal nanotube arrays give rise to improved electro-catalytic activity to small molecule oxidation (such as ethanol and urea) due to the larger surface areas. These findings help to deeply understand the metal electrodeposition in AAO, extend the application of template-

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