期刊
NANOSCALE
卷 6, 期 11, 页码 5762-5769出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3nr06084e
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资金
- National Basic Research Program of China [2012CB933301]
- Natural Science Foundation of Jiangsu Province [BK20130862]
- Natural Science Foundation of Universities from Jiangsu Province [13KJB150029]
- National Natural Science Foundation of China [21204038, 81273409]
- Ministry of Education of China [IRT1148, 20123223110007]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- State Key Laboratory of Bioelectronics, Southeast University
- Nanjing University of Posts & Telecommunications [NY211047]
A general and facile method for water-dispersed noble metal (Au, Ag, Pd, Pt) nanocrystal modified MoS2 nanosheets (NM-MoS2 NSs) has been developed. By using sodium carboxymethyl cellulose as a stabilizer, well-dispersed NM-MoS2 NSs with homogeneously deposited noble metal nanocrystals (NM NCs) can be synthesized in aqueous solutions. Due to the transition from the semiconducting 2H phase to the metallic 1T phase, the chemically exfoliated MoS2 (ce-MoS2) NSs have improved electrochemical activity. The partially metallic nature of the ce-MoS2 NSs and the catalytic activity of the NM NCs synergistically make NM-MoS2 NSs a potential electrochemical catalyst. For the first time, Pd-MoS2 NSs were used as an electrocatalyst for methanol oxidation in alkaline media. The results showed that Pd-MoS2 NSs have enhanced catalytic activity with 2.8-fold anodic peak current mass density compared to a commercial Pd/C catalyst, suggesting potential for application in direct methanol fuel cells (DMFCs).
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