Facile Synthesis of Hollow TiO2 Single Nanocrystals with Improved Photocatalytic and Photoelectrochemical Activities. Issue 4 (12th January 2015)

• Record Type: Journal Article
• Authors: Liu, Min; Zhong, Miao; Li, Hongmei; Piao, Lingyu; Wang, Wenjing
• Is Part Of: ChemPlusChem. Volume 80:Issue 4(2015:Apr.)
• Page Start: 688
• Page End: 696
• Publication Date: 2015-01-12
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1002/cplu.201402368
• Languages: English
• ISSNs: 2192-6506

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Diverse titanium dioxide (TiO₂) nanostructures have attracted considerable attention owing to their broad applications in photocatalytic and photoelectrochemical fields. Herein, TiO₂ hollow single nanocrystals are reported for the first time by using TiO₂ nanopowders as the raw material and hydrofluoric acid as a capping and etching agent through a simple hydrothermal treatment. The influence of experimental parameters such as the concentration of HF, the amount of TiO₂ nanoparticles, the reaction time, and temperature was investigated systematically. The obtained hollow single nanocrystals exhibited enhanced photoelectrochemical and photocatalytic performances attributed to their good crystallinity, suppressed charge recombination, and increased active sites. The current study will provide new insights into the nanostructured engineering of anatase TiO₂ as well as opportunities for the controllable synthesis of hollow single nanocrystals.</p> </abstract>