Regulating photocatalytic overall water splitting of ferroelectric heterostructures by size effect

doi:10.1007/s12274-024-6819-7

IMR OpenIR

	Regulating photocatalytic overall water splitting of ferroelectric heterostructures by size effect
	Ye, Zixing 1; Yu, Daifu 2; Zhang, Ruian 1; Qin, Fei 2; Sun, Yiran 1; Huang, Jie 2; Zhou, Zhanqi 3; Tian, He 3; Han, Gaorong 1; Ren, Zhaohui 1; Liu, Gang 2
通讯作者	Tian, He(hetian@zju.edu.cn) ; Ren, Zhaohui(renzh@zju.edu.cn) ; Liu, Gang(gangliu@imr.ac.cn)
	2024-07-25
发表期刊	NANO RESEARCH
ISSN	1998-0124
页码	7
摘要	In the past decade, ferroelectric materials have been intensively explored as promising photocatalysts. An intriguing ability of ferroelectrics is to directly sperate the photogenerated electrons and holes, which is believed to arise from a spontaneous polarization. Understanding how polarization affects the photocatalytic performance is vital to design high-efficiency photocatalysts. In this work, we report a size effect of ferroelectric polarization on regulating the photocatalytic overall water splitting of SrTiO3/PbTiO3 nanoplate heterostructures for the first time. This was realized hydrothermally by controlling the thickness and thus spontaneous polarization strength of single-crystal and single-domain PbTiO3 nanoplates, which served as the substrate for selective heteroepitaxial growth of SrTiO3. An enhancement of 22 times in the photocatalytic overall water splitting performance of the heterostructures has been achieved when the average thickness of the nanoplate increases from 30 to 107 nm. A combined experimental investigation revealed that the incompletely compensated depolarization filed is the dominated driving force for the photogenerated carrier separation within heterostructures, and its increase with the thickness of the nanoplates accounts for the enhancement of photocatalytic activity. Moreover, the concentration of oxygen vacancies for negative polarization compensation has been found to grow as the thickness of the nanoplates increases, which promotes oxygen evolution reaction and reduces the stoichiometric ratio of H2/O2. These findings may provide the opportunity to design and develop high-efficiency ferroelectric photocatalysts.
关键词	single-domain nanoplates size effect ferroelectric polarization screening photocatalytic overall water splitting
资助者	National Key R & D Program of China ; National Natural Science Foundation of China ; Natural Science Foundation of Zhejiang Province, China ; Shanxi Zheda Institute of Advanced Materials and Chemical Engineering ; Joint Funds of the National Natural Science Foundation of China
DOI	10.1007/s12274-024-6819-7
收录类别	SCI
语种	英语
资助项目	National Key R & D Program of China[2021YFA1500800] ; National Natural Science Foundation of China[52425201] ; National Natural Science Foundation of China[52272129] ; National Natural Science Foundation of China[12125407] ; Natural Science Foundation of Zhejiang Province, China[LR21E020004] ; Shanxi Zheda Institute of Advanced Materials and Chemical Engineering[2021SX-FR007] ; Joint Funds of the National Natural Science Foundation of China[U21A2067]
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目	Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
WOS记录号	WOS:001276181200004
出版者	TSINGHUA UNIV PRESS
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/188511
专题	中国科学院金属研究所
通讯作者	Tian, He; Ren, Zhaohui; Liu, Gang
作者单位	1.Zhejiang Univ, Sch Mat Sci & Engn, State Key Lab Silicon & Adv Semicond Mat, Hangzhou 310027, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 3.Zhejiang Univ, Ctr Electron Microscopy, Sch Mat Sci & Engn, Hangzhou 310027, Peoples R China
推荐引用方式 GB/T 7714	Ye, Zixing,Yu, Daifu,Zhang, Ruian,et al. Regulating photocatalytic overall water splitting of ferroelectric heterostructures by size effect[J]. NANO RESEARCH,2024:7.
APA	Ye, Zixing.,Yu, Daifu.,Zhang, Ruian.,Qin, Fei.,Sun, Yiran.,...&Liu, Gang.(2024).Regulating photocatalytic overall water splitting of ferroelectric heterostructures by size effect.NANO RESEARCH,7.
MLA	Ye, Zixing,et al."Regulating photocatalytic overall water splitting of ferroelectric heterostructures by size effect".NANO RESEARCH (2024):7.