兰州大学机构库 >信息科学与工程学院
PtSe2/SiH van der Waals type-II heterostructure: a high efficiency photocatalyst for water splitting
Han, Shuaicheng; Li, YE(李月娥); Wang, Z(王忠)
2020-08-14
Source PublicationPHYSICAL CHEMISTRY CHEMICAL PHYSICS
ISSN1463-9076
Volume22Issue:30Pages:17145-17151
AbstractThe construction of type-II van der Waals heterostructure is an effective method to design efficient photocatalysts. In this study, we constructed the PtSe2/SiH van der Waals heterojunction, investigated its structural, electronic and optical properties, and discussed its application in photocatalysis. The PtSe2/SiH heterostructure is an indirect bandgap heterojunction with a 1.553 eV bandgap. The phonon dispersion curves and electron localization functions are calculated to investigate the stability of the heterojunction and the bonding mechanism between layers. According to projected density of state, it is known that PtSe2/SiH is a type-II band alignment. By calculating the work functions, the charge density difference and the plane-averaged electrostatic potential drop across the interface, we explored and discussed the interface charge transfer. In order to investigate the photocatalytic application of the PtSe2/SiH heterostructure, the band edge position and absorption coefficient were calculated. The band edge position of the heterojunction crosses the redox potential of water, indicating that it has the ability for photocatalytic water splitting. Moreover, the excellent absorption coefficient of the PtSe2/SiH heterojunction is higher than that of almost all previous studies. The absorption coefficient spans the whole region of visible light and has a peak value of 3.34 x 10(5)cm(-1). Meanwhile, there was a peak of 4 x 10(5)cm(-1)in the near ultraviolet region. Our results demonstrate that PtSe2/SiH has excellent properties and is a promising photocatalytic candidate.
DOI10.1039/d0cp02900a
Indexed BySCIE ; EI
Language英语
Funding ProjectNational Natural Science Foundation of China[61405083]
WOS Research AreaChemistry ; Physics
WOS SubjectChemistry, Physical ; Physics, Atomic, Molecular & Chemical
WOS IDWOS:000556405200010
PublisherROYAL SOC CHEMISTRY
EI Accession Number20203309058785
EI KeywordsSilicon
EI Classification Number549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals ; 714.2 Semiconductor Devices and Integrated Circuits ; 741.1 Light/Optics ; 801.4 Physical Chemistry ; 802.2 Chemical Reactions
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.lzu.edu.cn/handle/262010/440363
Collection信息科学与工程学院
Corresponding AuthorLi, Yuee
AffiliationLanzhou Univ, Sch Informat Sci & Engn, Lanzhou, Peoples R China
First Author AffilicationSchool of Information Science and Engineering
Corresponding Author AffilicationSchool of Information Science and Engineering
Recommended Citation
GB/T 7714
Han, Shuaicheng,Li, Yuee,Wang, Zhong. PtSe2/SiH van der Waals type-II heterostructure: a high efficiency photocatalyst for water splitting[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2020,22(30):17145-17151.
APA Han, Shuaicheng,Li, Yuee,&Wang, Zhong.(2020).PtSe2/SiH van der Waals type-II heterostructure: a high efficiency photocatalyst for water splitting.PHYSICAL CHEMISTRY CHEMICAL PHYSICS,22(30),17145-17151.
MLA Han, Shuaicheng,et al."PtSe2/SiH van der Waals type-II heterostructure: a high efficiency photocatalyst for water splitting".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 22.30(2020):17145-17151.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Altmetrics Score
Google Scholar
Similar articles in Google Scholar
[Han, Shuaicheng]'s Articles
[Li, Yuee]'s Articles
[Wang, Zhong]'s Articles
Baidu academic
Similar articles in Baidu academic
[Han, Shuaicheng]'s Articles
[Li, Yuee]'s Articles
[Wang, Zhong]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Han, Shuaicheng]'s Articles
[Li, Yuee]'s Articles
[Wang, Zhong]'s Articles
Terms of Use
No data!
Social Bookmark/Share
No comment.
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.