Reconstructing Ferroelectric Polarization Screening of PbTiO<sub>3</sub> by Epitaxial SrTiO<sub>3</sub> for Efficient Photocatalytic Overall Water Splitting

doi:10.1002/adfm.202312888

IMR OpenIR

	Reconstructing Ferroelectric Polarization Screening of PbTiO₃ by Epitaxial SrTiO₃ for Efficient Photocatalytic Overall Water Splitting
	Du, Peipei 1; Huang, Jie 1; Ye, Zixing 2; Zhen, Chao 1; Liu, Jianan 1; Yang, Yang 1; Ren, Zhaohui 2; Yin, Lichang 1; Wang, Lianzhou 3,4; Liu, Gang 1,5
通讯作者	Ren, Zhaohui(renzh@zju.edu.cn) ; Liu, Gang(gangliu@imr.ac.cn)
	2024-02-20
发表期刊	ADVANCED FUNCTIONAL MATERIALS
ISSN	1616-301X
页码	9
摘要	A large depolarization field in single-domain PbTiO3 is anticipated to drive the spatial separation of photogenerated charge carriers and enable potential active sites for photocatalytic overall water splitting reaction. However, the negatively polarized surface usually cannot provide sufficient active sites for water oxidation to oxygen because of lacking oxygen vacancies, inevitably hindering photocatalytic water splitting reaction. Here, the ferroelectric polarization screening is reconstructed by a heteroepitaxial SrTiO3 film on the positively polarized surface of PbTiO3 nanoplates to generate abundant oxygen vacancies on the negatively polarized surface as active sites for water oxidation. Moreover, it is experimentally and theoretically revealed that the epitaxial SrTiO3 layer on the positively polarized surface is also beneficial for good dispersion of cocatalyst and the formation of low Schottky barrier height at the interface between the heterostructure and the cocatalyst for efficient electron transfer. Compared with pristine PbTiO3, the obtained PbTiO3/SrTiO3 heteroepitaxial structure with the simultaneous regulation of positively and negatively polarized surfaces delivered a greatly enhanced photocatalytic overall water splitting with stoichiometric ratio (2:1) of hydrogen and oxygen evolution by a factor of 15 times. These findings might open up a new avenue for the design of ferroelectric photocatalysts with excellent activity.
关键词	ferroelectric polarization heteroepitaxy interface control PbTiO3 photocatalytic overall water splitting
资助者	National Key Research and Development Program of China ; National Natural Science Foundation of China ; CAS Projects for Young Scientists in Basic Research ; International Partnership Program of the Chinese Academy of Sciences ; New Cornerstone Science Foundation through the XPLORER PRIZE
DOI	10.1002/adfm.202312888
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China ; National Natural Science Foundation of China[51825204] ; National Natural Science Foundation of China[52120105003] ; National Natural Science Foundation of China[52188101] ; National Natural Science Foundation of China[51972312] ; CAS Projects for Young Scientists in Basic Research[YSBR-004] ; International Partnership Program of the Chinese Academy of Sciences[174321KYSB20200005] ; New Cornerstone Science Foundation through the XPLORER PRIZE ; [2021YFA1500800]
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目	Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:001167101900001
出版者	WILEY-V C H VERLAG GMBH
引用统计	被引频次：13[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/321006/185197
专题	中国科学院金属研究所
通讯作者	Ren, Zhaohui; Liu, Gang
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Zhejiang Univ, Sch Mat Sci & Engn, State Key Lab Silicon & Adv Semicond Mat, Hangzhou 310027, Peoples R China 3.Univ Queensland, Nanomat Ctr, Sch Chem Engn, Brisbane, Qld 4072, Australia 4.Univ Queensland, Australian Inst Bioengn & Nanotechnol, Brisbane, Qld 4072, Australia 5.Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Du, Peipei,Huang, Jie,Ye, Zixing,et al. Reconstructing Ferroelectric Polarization Screening of PbTiO₃ by Epitaxial SrTiO₃ for Efficient Photocatalytic Overall Water Splitting[J]. ADVANCED FUNCTIONAL MATERIALS,2024:9.
APA	Du, Peipei.,Huang, Jie.,Ye, Zixing.,Zhen, Chao.,Liu, Jianan.,...&Liu, Gang.(2024).Reconstructing Ferroelectric Polarization Screening of PbTiO₃ by Epitaxial SrTiO₃ for Efficient Photocatalytic Overall Water Splitting.ADVANCED FUNCTIONAL MATERIALS,9.
MLA	Du, Peipei,et al."Reconstructing Ferroelectric Polarization Screening of PbTiO₃ by Epitaxial SrTiO₃ for Efficient Photocatalytic Overall Water Splitting".ADVANCED FUNCTIONAL MATERIALS (2024):9.