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High aqueous solubility of carboxylated-carbon nanotubes as support for PtRu nanoparticles: Enhanced dispersion and electrocatalytic performance |
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| Authors: | Bohua Wu Yapeng Li Chao Wang Dong Xue Jianliang Xiao |
| Affiliation: | 1. Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education and College of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi''an, China;2. College of Chemistry and Chemical Engineering, Xi''an University of Science & Technology, Xi''an 710054, China;3. Department of Chemistry, Liverpool Centre for Materials and Catalysis, University of Liverpool, Liverpool, UK |
| Abstract: | One great challenge in the development of noble metal nanoparticles (NPs)/carbon nanotubes nanohybrids as fuel cells electrocatalyst is to explore rationally functionalizing CNTs method for dispersion and stability of noble metal NPs catalysts with better electrocatalytic performance. Here we report a facile strategy to fabricate a carboxymethyl chitosan functionalized CNTs (CMC-CNTs) and demonstrate its application as a promising catalyst support material for direct methanol fuel cells. The developed route rationally utilizes the excellent water-solubility and abundant carboxyl (–COOH) functional groups of the CMC-CNTs as a superior supporting material for growing and supporting PtRu NPs. For methanol electrooxidation, the as-prepared PtRu NPs/CMC-CNTs nanohybrid has extremely large electrochemically active surface area (ESA) and exhibits better electrocatalytic activity and stability than PtRu NPs/CNTs catalyst. This provides a facile approach to synthesize CNTs-based nanoelectrocatalysts for high performance energy conversion devices in the future. |
| Keywords: | Carbon nanotubes Fuctionalization PtRu nanoparticles Nanohybrids Electrocatalysis |
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