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Fine silver sulfide-platinum nanocomposites supported on carbon substrates for the methanol oxidation reaction
Tang, Jiayi1,2; Chen, Dong1; Li, Chengyin1; Yang, Xianfeng3; Liu, Hui1,4; Yang, Jun1,2,4
2017
Source PublicationRSC ADVANCES
ISSN2046-2069
Volume7Issue:6Pages:3455-3460
Abstract

Nanocomposites composed of silver sulfide (Ag2S) and platinum (Pt) metal are promising for electrocatalysis. However, they suffer from low concentration synthesis or larger sizes due to limitations in the current synthetic approaches. Herein, we report an organic synthesis to address these deficiencies for the preparation of Ag2S-Pt nanocomposites. This strategy starts with a dodecylamine (DDA)-based phase transfer of Ag+ ions from the aqueous phase to toluene. The transferred Ag+ ions are then loaded on the carbon substrates, followed by reaction with elemental sulfur to form carbon-supported Ag2S nanocrystals, which are used as seeds for the growth of a Pt metal shell, resulting in the formation of the Ag2S-Pt nanocomposites on the same carbon substrates. The as-prepared carbon-supported Ag2S-Pt nanocomposites have a core-shell construction with an overall fine size of ca. 5 nm. In comparison with the commercial Pt/C catalysts from Johnson Matthey, fine Ag2S-Pt nanocomposites supported on the carbon substrates exhibit a superior specific activity and durability for the methanol oxidation reaction under acidic conditions due to the strong electronic coupling effect between the Ag2S and Pt domains.

SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1039/c6ra26630d
Indexed BySCI
Language英语
WOS KeywordPhase-transfer Protocol ; Nanoparticles ; Nanomaterials ; Growth ; Nanorods ; Rods
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
Funding OrganizationNational Natural Science Foundation of China(21376247 ; Center for Mesoscience, the Institute of Process Engineering, the Chinese Academy of Sciences(COM2015A001) ; New Faculty Start-up funding in South China University of Technology ; Fundamental Research Funds for the Central Universities ; 21506225 ; 21573240)
WOS IDWOS:000393749200052
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/21895
Collection多相复杂系统国家重点实验室
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
3.South China Univ Technol, Analyt & Testing Ctr, Guangzhou 510640, Guangdong, Peoples R China
4.Chinese Acad Sci, Inst Proc Engn, Ctr Mesosci, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Tang, Jiayi,Chen, Dong,Li, Chengyin,et al. Fine silver sulfide-platinum nanocomposites supported on carbon substrates for the methanol oxidation reaction[J]. RSC ADVANCES,2017,7(6):3455-3460.
APA Tang, Jiayi,Chen, Dong,Li, Chengyin,Yang, Xianfeng,Liu, Hui,&Yang, Jun.(2017).Fine silver sulfide-platinum nanocomposites supported on carbon substrates for the methanol oxidation reaction.RSC ADVANCES,7(6),3455-3460.
MLA Tang, Jiayi,et al."Fine silver sulfide-platinum nanocomposites supported on carbon substrates for the methanol oxidation reaction".RSC ADVANCES 7.6(2017):3455-3460.
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