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Carbonized MoS2: Super-Active Co-Catalyst for Highly Efficient Water Splitting on CdS
Mengmeng Shao1; Yangfan Shao1,3; Shengjie Ding1; Rui Tong.1; Xiongwei Zhong1,4; Lingmin Yao5; Weng Fai Ip2; Baomin Xu4; Xing-Qiang Shi3; Yi-Yang Sun6; Xuesen Wang7; Hui Pan1,2
2019-01-17
Source PublicationACS Sustainable Chemistry and Engineering
ISSN2168-0485
Volume7Issue:4Pages:4220-4229
Abstract

Searching photocatalysts for efficient hydrogen production has been a challenging issue for solar-energy harvesting. Using co-catalyst is proven to be an effective approach to improve the efficiency of photocatalyst in water-splitting. Here, we report that carbonized MoS2 (MoS2/Mo2C) can be a superactive co-catalyst in solar-driven hydrogen production. We show that MoS2/Mo2C decorated CdS achieves a high photocatalytic hydrogen evolution rate (34 mmol/h/g, ∼112 times higher than pure CdS) and excellent apparent quantum efficiency (41.4% at 420 nm). The outstanding photocatalytic performance of MoS2/Mo2C/CdS is attributed to the metallic characteristic of MoS2/Mo2C and suitable Gibbs free energy of hydrogen adsorption, leading to enhanced light absorption, fast separation and transportation of photoinduced carriers, and optimal activity in hydrogen evolution reaction (HER). We further show that MoS2/Mo2C as co-catalyst can also dramatically improve the photocatalytic activity of g-C3N4. Our findings demonstrate that the carbonized transition metal disulfide can be active as co-catalyst in photocatalysis, providing guidance on exploring novel photocatalysts for energy harvesting.

KeywordMos2/mo2c Co-catalyst Photocatalytic Hydrogen Evolution Cds
DOI10.1021/acssuschemeng.8b05917
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaChemistry ; Engineering ; Science & Technology - Other Topics
WOS SubjectChemistry, Multidisciplinary ; Green & Sustainable Science & Technology ; Engineering, Chemical
WOS IDWOS:000459367400064
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Cited Times [WOS]:33   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Affiliation1.Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering and ⊥Department of Physics and Chemistry, Faculty of Science and Technology, University of Macau, Taipa, Macao SAR, China
2.Department of Physics and Chemistry, Faculty of Science and Technology, University of Macau, Taipa, Macao SAR, China
3.Department of Physics and Department of Materials Science and Engineering, Southern University of Science and Technology, No. 1088 Xueyuan Road, Nanshan District, Shenzhen 518055, China
4.Department of Materials Science and Engineering, Southern University of Science and Technology, No. 1088 Xueyuan Road, Nanshan District, Shenzhen 518055, China
5.School of Physics and Electronic Engineering, Guangzhou University, 230 Wai Huan Xi Road, Guangzhou Higher Education Mega Center, Guangzhou 510006, China
6.Guangzhou Univ, Sch Phys & Elect Engn, Guangzhou Higher Educ Mega Ctr, 230 Wai Huan Xi Rd, Guangzhou 510006, Guangdong, Peoples R China
7.State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 585 Heshuo Road, Jiading, Shanghai 201899, China
8.Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore 117542
First Author AffilicationFaculty of Science and Technology
Recommended Citation
GB/T 7714
Mengmeng Shao,Yangfan Shao,Shengjie Ding,et al. Carbonized MoS2: Super-Active Co-Catalyst for Highly Efficient Water Splitting on CdS[J]. ACS Sustainable Chemistry and Engineering,2019,7(4):4220-4229.
APA Mengmeng Shao,Yangfan Shao,Shengjie Ding,Rui Tong.,Xiongwei Zhong,Lingmin Yao,Weng Fai Ip,Baomin Xu,Xing-Qiang Shi,Yi-Yang Sun,Xuesen Wang,&Hui Pan.(2019).Carbonized MoS2: Super-Active Co-Catalyst for Highly Efficient Water Splitting on CdS.ACS Sustainable Chemistry and Engineering,7(4),4220-4229.
MLA Mengmeng Shao,et al."Carbonized MoS2: Super-Active Co-Catalyst for Highly Efficient Water Splitting on CdS".ACS Sustainable Chemistry and Engineering 7.4(2019):4220-4229.
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