The hierarchical structure of cubic K0.5La0.5TiO3 layers and enhanced   photocatalytic hydrogen evolution after surface acidification

doi:10.1039/c5dt03468j

CORC > 北京大学 > 化学与分子工程学院

	The hierarchical structure of cubic K0.5La0.5TiO3 layers and enhanced photocatalytic hydrogen evolution after surface acidification
	Zhao, Wenli ; Zhu, Guilian ; Zhao, Wei ; Lin, Tianquan ; Xu, Fangfang ; Huang, Fuqiang
刊名	DALTON TRANSACTIONS
	2015
关键词	VISIBLE-LIGHT IRRADIATION X-RAY PHOTOELECTRON PEROVSKITE OXIDES DOPED SRTIO3 TIO2 WATER OXYGEN CERIUM NANOCRYSTALS PERFORMANCE
DOI	10.1039/c5dt03468j
英文摘要	Transition-metal perovskite oxides possess rich functionalities in the fields of ferroelectrics, piezoelectrics, superconductors, dielectrics, fuel cells and photocatalysis. Nano-facet control of the cubic ATiO(3) (A: a divalent cation) phase, a typical perovskite oxide, may result in new properties or phenomena not observable in the bulk material. Herein, we first report a puzzle-like 3D hierarchical structure constructed with K0.5La0.5TiO3 nanosheets. Surprisingly, K0.5La0.5TiO3 has a cubic symmetry similar to a SrTiO3 perovskite. The unusual phase is synthesized by a simple one-pot hydrothermal strategy without using any structure-directing agent. After modest acidification, the assembled 3D hierarchical structure is etched into a core-shell nanostructure which consists of a crystalline K0.5La0.5TiO3 core and an amorphous TiO2 shell. The acid-treated sample exhibits remarkably enhanced photocatalytic H-2 production, which is over 60 times higher than the pristine sample.; National Natural Science Foundation of China [51125006, 91122034, 51272270, 61376056]; Key Research Program of Chinese Academy of Sciences [KGZD-EW-T06]; Science and Technology Commission of Shanghai [13JC1405700, 14520722000, 14YF1406500]; Shanghai Technical Platform for Testing and Characterization on Inorganic Materials [14DZ2292900]; SCI(E); EI; ARTICLE; huangfq@mail.sic.ac.cn; 42; 18665-18670; 44
语种	中文
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/420987]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Zhao, Wenli,Zhu, Guilian,Zhao, Wei,et al. The hierarchical structure of cubic K0.5La0.5TiO3 layers and enhanced photocatalytic hydrogen evolution after surface acidification[J]. DALTON TRANSACTIONS,2015.
APA	Zhao, Wenli,Zhu, Guilian,Zhao, Wei,Lin, Tianquan,Xu, Fangfang,&Huang, Fuqiang.(2015).The hierarchical structure of cubic K0.5La0.5TiO3 layers and enhanced photocatalytic hydrogen evolution after surface acidification.DALTON TRANSACTIONS.
MLA	Zhao, Wenli,et al."The hierarchical structure of cubic K0.5La0.5TiO3 layers and enhanced photocatalytic hydrogen evolution after surface acidification".DALTON TRANSACTIONS (2015).