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Ultrafine WC1-x Nanocrystals: An Efficient Cocatalyst for the Significant Enhancement of Photocatalytic Hydrogen Evolution on g-C3N4
Rui Tong1; Zhi Sun3; Xina Wang4; Shuangpeng Wang1,2; Hui Pan1,2
2019-10-11
Source PublicationJournal of Physical Chemistry C
ISSN1932-7447
Volume123Issue:43Pages:26136-26144
Abstract

Developing noble metal-free, inexpensive, and highly active cocatalysts to increase the photocatalytic activity of photocatalysts and promote the practical application is significantly important. In this work, ultrafine carbon-deficient tungsten carbide (WC1–x) nanocrystals with an average size of 1.98 ± 0.29 nm are successfully prepared as cocatalysts to dramatically enhance the photocatalytic activity of graphitic carbon nitride (g-C3N4). The optimized system (WC1–xCN5) exhibits the best photocatalytic H2 production rate of 124.5 μmol h–1 (2490 μmol h–1 g–1), which is about 56 times that of bare g-C3N4. In this system, ultrafine WC1–x nanocrystals play a multifunctional role: effectively boosting the carrier separation and transfer and providing rich active sites for H2 production. Hence, the loading of WC1–x nanocrystals remarkably increases the photocatalytic H2 production activity of g-C3N4. This work demonstrates that ultrafine WC1–x nanocrystals have practical application potential to enhance photocatalytic H2 evolution of g-C3N4.

DOI10.1021/acs.jpcc.9b07922
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science
WOS SubjectChemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS IDWOS:000493865700011
Scopus ID2-s2.0-85074408047
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Cited Times [WOS]:15   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Corresponding AuthorHui Pan
Affiliation1.Joint Key Laboratory of the Ministry of Education,Institute of Applied Physics and Materials Engineering,999078,Macao
2.Department of Physics and Chemistry,Faculty of Science and Technology,University of Macau,999078,Macao
3.State Key Discipline Laboratory of Wide-Bandgap Semiconductor Technologies,School of Microelectronics,Xidian University,Xian,710071,China
4.Hubei Key Laboratory of Ferro and Piezoelectric Materials and Devices,Faculty of Physics and Electronic Science,Hubei University,Wuhan,430062,China
First Author AffilicationINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Corresponding Author AffilicationINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING;  Faculty of Science and Technology
Recommended Citation
GB/T 7714
Rui Tong,Zhi Sun,Xina Wang,et al. Ultrafine WC1-x Nanocrystals: An Efficient Cocatalyst for the Significant Enhancement of Photocatalytic Hydrogen Evolution on g-C3N4[J]. Journal of Physical Chemistry C,2019,123(43):26136-26144.
APA Rui Tong,Zhi Sun,Xina Wang,Shuangpeng Wang,&Hui Pan.(2019).Ultrafine WC1-x Nanocrystals: An Efficient Cocatalyst for the Significant Enhancement of Photocatalytic Hydrogen Evolution on g-C3N4.Journal of Physical Chemistry C,123(43),26136-26144.
MLA Rui Tong,et al."Ultrafine WC1-x Nanocrystals: An Efficient Cocatalyst for the Significant Enhancement of Photocatalytic Hydrogen Evolution on g-C3N4".Journal of Physical Chemistry C 123.43(2019):26136-26144.
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