物理化学学报2012，Vol.28Issue(6)：1291-1305,15.DOI:10.3866/PKU.WHXB201204093
阳极氧化物纳米孔道和TiO2纳米管形成机理的研究进展
Research Progress in Formation Mechanism of TiO2 Nanotubes and Nanopores in Porous Anodic Oxide
摘要
Abstract
Self-ordered porous anodic TIO2 nanotubes and other porous anodic oxides (PAO) have received considerable attention because of their potential for high technological application in a number of fields. The anodization of valve metals has been widely investigated over the last eight decades. The formation mechanisms of hexagonal cells and nanotubes, however, have remained unclear until now. Simply reviewing the mechanisms of PAO formation was not the aim of this research and we were more interested in reviewing the forming processes of compact anodic oxides (CAO) and investigating the relationship between the PAO and CAO, to better understand the pore generating mechanisms. The present work introduces the differences between PAO and CAO films, as well as reviewing the traditional theories of PAO films and their deficiencies. Recent progress in the formation mechanism of PAO, including the viscous flow, breakdown, equifield strength, and oxygen bubbles models has been reviewed in detail. The perspective on future developments for the PAO forming mechanism has been tentatively discussed. Based on sufficient analysis of the latest findings, it has been proposed that several approaches may be employed for investigating the pore forming and self-ordering mechanisms. These new approaches include ultrasound-assisted anodizing, anodizing under vacuum or high pressure and adding sodium carbonate or a reducing agent to the PAO-forming electrolytes. An investigation of changes in the current and anodizing efficiencies would also be an effective approach for better understanding the physical nature of field-assisted dissolution (FAD).关键词
致密型阳极氧化物/多孔型阳极氧化物/形成机理/阳极氧化/自组织Key words
Compact anodic oxide/ Porous anodic oxide/ Formation mechanism/ Anodization/ Self-ordering分类
化学化工引用本文复制引用
朱绪飞,韩华,宋晔,段文强..阳极氧化物纳米孔道和TiO2纳米管形成机理的研究进展[J].物理化学学报,2012,28(6):1291-1305,15.基金项目
国家自然科学基金(61171043,51077072)和国家科技重大专项资金项目(2009ZX01021-002)资助 （61171043,51077072）
