Photocatalytic Properties Dependent on the Interfacial Defects of Intergrains within TiO2 Mesocrystals

doi:10.1002/chem.201803516

	Photocatalytic Properties Dependent on the Interfacial Defects of Intergrains within TiO2 Mesocrystals
	Cao XZ(曹兴忠); Hu, Xun; Cao, Xingzhong; Guan, Ruifang; Duan, Ran; Luan, Qingrui; Chen, Qifeng; Wang, Hui
刊名	CHEMISTRY-A EUROPEAN JOURNAL
	2018
卷号	24 期号:64 页码:17105-17116
关键词	interfaces mesophases nanoparticles photochemistry titanium
ISSN号	0947-6539
DOI	10.1002/chem.201803516
文献子类	Article
英文摘要	The regulation of interfacial defects of nanocrystals aligned orderly in a superstructured photocatalyst is an effective approach to improve the photocatalytic performance. However, the synthesis of ordered self-assemblies with abundant interfacial defects and reactive sites is hard to achieve, and applications are limited due to the unclear physicochemical properties, which result from the unique mesocrystalline microstructures. It is reported herein that the photocatalytic properties depend on the interfacial defects of intergrains in anatase TiO2 mesocrystals (TMCs). Research reveals that the photocatalytic activity largely depends on defects, such as lattice distortion and oxygen vacancies, which are located at highly aligned interfaces of intergrains within TMCs. Moreover, the mesocrystalline TiO2 photocatalysts exhibit higher photocatalytic performance in organic degradation and hydrogen evolution, compared with single crystals and polycrystals; this can be ascribed to an appropriate amount of interfacial defects at the intergrains and improved carrier separation efficiency through the highly oriented interfaces. In addition, the photocatalytic performance of the TMCs could be further improved through regulation of defects by undergoing an annealing process under a redox atmosphere. This work can provide an avenue to defect engineering for improved photocatalytic performance.
电子版国际标准刊号	1521-3765
WOS关键词	VISIBLE-LIGHT PHOTOCATALYSIS ; ANATASE TIO2 ; CHARGE SEPARATION ; DOPED TIO2 ; HYDROGEN-PRODUCTION ; TITANIUM-DIOXIDE ; QUANTUM DOTS ; OXYGEN ; NANOPARTICLES ; RUTILE
WOS研究方向	Chemistry
语种	英语
WOS记录号	WOS:000450554700024
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/286866]
专题	高能物理研究所_多学科研究中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Cao XZ,Hu, Xun,Cao, Xingzhong,et al. Photocatalytic Properties Dependent on the Interfacial Defects of Intergrains within TiO2 Mesocrystals[J]. CHEMISTRY-A EUROPEAN JOURNAL,2018,24(64):17105-17116.
APA	曹兴忠.,Hu, Xun.,Cao, Xingzhong.,Guan, Ruifang.,Duan, Ran.,...&Wang, Hui.(2018).Photocatalytic Properties Dependent on the Interfacial Defects of Intergrains within TiO2 Mesocrystals.CHEMISTRY-A EUROPEAN JOURNAL,24(64),17105-17116.
MLA	曹兴忠,et al."Photocatalytic Properties Dependent on the Interfacial Defects of Intergrains within TiO2 Mesocrystals".CHEMISTRY-A EUROPEAN JOURNAL 24.64(2018):17105-17116.