Aqueous Synthesis of Mesostructured BiVO_(4) Quantum Tubes with Excellent Dual Response to Visible Light and Temperature  

作　　者：Yongfu Sun Yi Xie Changzheng Wu Shudong Zhang Shishi Jiang 

机构地区：[1]Hefei National Laboratory for Physical Sciences at Microscale,University of Science and Technology of China,Hefei 230026,China

出　　处：《Nano Research》2010年第9期620-631,共12页纳米研究（英文版）

基　　金：This work was financially supported by the National Basic Research Program of China(No.2009CB939901);the National Natural Science Foundation of China(Nos.90922016 and 10979047);the Innovative Project of Chinese Academy of Sciences(No.KJCX2-YW-H2O).

摘　　要：Analysis of the atomic structure of monoclinic BiVO4 reveals its fascinating structure-related dual response to visible light and temperature.Although there have been a few reported studies of its responses to visible light and temperature,an understanding of the effects of quantum size,particle shape or specific exposed facets on its dual responsive properties remains elusive;this is primarily due to the limited availability of high-quality monodisperse nanocrystals with extremely small sizes and specific_(4)exposed facets.Herein,we describe a novel assembly-fusion strategy for the synthesis of mesostructured monoclinic BiVO_(4)quantum tubes with ultranarrow diameter of 5 nm,ultrathin wall thickness down to 1 nm and exposed{020}facets,via a convenient hydrothermal method at temperatures as low as 100℃.Notably,the resulting high-quality quantum tubes possess significantly superior dual-responsive properties compared with bulk BiVO_(4)or even BiVO4 nanoellipsoids,and thus,show high promise for applications as visible-light photocatalysts and temperature indicators offering improved environmental quality and safety.This mild and facile methodology should be capable of extension to the preparation of other mesostructured inorganic quantum tubes with similar characteristics,giving a range of materials with enhanced dual-responsive properties.

关 键 词：MESOSTRUCTURE BiVO_(4) quantum tubes visible light temperature 

分 类 号：O64[理学—物理化学]