热液循环
锐钛矿
材料科学
正交晶系
相(物质)
化学工程
氢氟酸
纳米结构
基质(水族馆)
水热合成
纳米技术
结晶学
晶体结构
化学
催化作用
有机化学
光催化
冶金
地质学
海洋学
工程类
作者
Porun Liu,Yun Wang,Haimin Zhang,Taicheng An,Hua Gui Yang,Zhiyong Tang,Weiping Cai,Huijun Zhao
出处
期刊:Small
[Wiley]
日期:2012-08-20
卷期号:8 (23): 3664-3673
被引量:56
标识
DOI:10.1002/smll.201200971
摘要
Abstract For the first time, a facile, one‐pot hydrofluoric acid vapor‐phase hydrothermal (HF‐VPH) method is demonstrated to directly grow single‐crystalline anatase TiO 2 nanosheets with 98.2% of exposed {001} faceted surfaces on the Ti substrate via a distinctive two‐stage formation mechanism. The first stage produces a new intermediate crystal (orthorhombic HTiOF 3 ) that is transformed into anatase TiO 2 nanosheets during the second stage. The findings reveal that the HF‐VPH reaction environment is unique and differs remarkably from that of liquid‐phase hydrothermal processes. The uniqueness of the HF‐VPH conditions can be readily used to effectively control the nanostructure growth.
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