Two-Dimensional Hollow TiO2 Nanoplates with Enhanced Photocatalytic Activity

Chuang Song; Lanfang Wang; Feng Gao; Qingyi Lu

doi:10.1002/chem.201504570

Two-Dimensional Hollow TiO2 Nanoplates with Enhanced Photocatalytic Activity

Chemistry. 2016 Apr 25;22(18):6368-73. doi: 10.1002/chem.201504570. Epub 2016 Mar 21.

Authors

Chuang Song¹, Lanfang Wang², Feng Gao³, Qingyi Lu⁴

Affiliations

¹ Department of Materials Science and Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, P.R. China.
² State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, Collaborative Innovation Center of Advanced Microstructures, Nanjing National Laboratory of Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P.R. China.
³ Department of Materials Science and Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, P.R. China. fgao@nju.edu.cn.
⁴ State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, Collaborative Innovation Center of Advanced Microstructures, Nanjing National Laboratory of Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P.R. China. qylu@nju.edu.cn.

PMID: 26996999
DOI: 10.1002/chem.201504570

Abstract

Two-dimensional anatase TiO2 hollow nanoplates were firstly synthesized through a facile synthesis route by using α-Fe2 O3 nanoplates as removable templates. Two-dimensional hollow TiO2 nanoplates with different ratios of anatase and rutile phases were obtained by adjusting the calcining temperature. The average diameters were around 600 nm, and the shell thickness was approximately 30 nm. The photocatalytic performance of TiO2 was investigated by decomposing rhodamine B under simulated sunlight. Among the TiO2 samples, the anatase TiO2 hollow nanoplates manifested a significant enhancement in the photocatalytic performances. The excellent catalytic performance can be attributed to the unique structure of the two-dimensional anatase TiO2 hollow nanoplates, including a large surface area and increased dye-photocatalyst contact areas as well as more active sites for photodegradation.

Keywords: TiO2; hollow structures; nanoplates; photocatalysis.

Publication types

Research Support, Non-U.S. Gov't