Premium
Morphological alteration of anatase titania nanostructures depend on the amount of Na ion intercalation
Author(s) -
Ren Long,
Qi Xiang,
Liu Yundan,
Zou Xianghua,
Huang Zongyu,
Li Jun,
Yang Liwen,
Zhong Jianxin
Publication year - 2012
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.201200107
Subject(s) - photocatalysis , anatase , materials science , scanning electron microscope , transmission electron microscopy , chemical engineering , nanosheet , photoluminescence , nanostructure , titanium dioxide , aqueous solution , microstructure , intercalation (chemistry) , hydrothermal circulation , nanotechnology , inorganic chemistry , chemistry , composite material , optoelectronics , catalysis , biochemistry , engineering
Controllable preparation of different nanoscale‐shaped titania materials was realized by hydrothermal treatment of anatase TiO 2 in an alkaline solution. The gradually changing morphologies and microstructures of titanium dioxide were investigated by powder X‐ray diffraction, scanning electron microscopy and transmission electron microscopy. And a top‐down path is illuminated to have an insight to the morphological evolution from nanoparticle to nanosheet by adjusting the concentrations of Na ion in the aqueous solution. The results of photocatalytic experiments indicated that the TiO 2 nanobelts exhibited enhanced photocatalytic performance, due to their lower electron‐hole recombination rate confirmed from the photoluminescence spectra. This study suggests that the photocatalysis efficiency of nanocrystals can be significantly improved by the shape‐dependent morphological transformation.