Synthesis and Electrocatalysis of Carbon Nanofiber-Supported Platinum by 1-AP Functionalization and Polyol Processing Technique

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• 作者：Zhan Lin ; Liwen Ji ; Mariah D. Woodroof ; Yingfang Yao ; Wendy Krause ; Xiangwu Zhang
• 刊名：Journal of Physical Chemistry C
• 出版年：2010
• 出版时间：March 11, 2010
• 年：2010
• 卷：114
• 期：9
• 页码：3791-3797
• 全文大小：371K
• 年卷期：v.114,no.9(March 11, 2010)
• ISSN：1932-7455

文摘

Pt/carbon composite nanofibers were prepared by depositing Pt nanoparticles directly onto electrospun carbon nanofibers using a polyol processing technique. The morphology and size of Pt nanoparticles were controlled by 1-aminopyrene functionalization. The noncovalent functionalization of carbon nanofibers by 1-aminopyrene is simple and can be carried out at ambient temperature without damaging the integrity and electronic structure of the carbon nanofibers. The resulting Pt/carbon composite nanofibers were characterized by running cyclic voltammograms in 0.5 M H₂SO₄ and 0.125 M CH₃OH + 0.2 M H₂SO₄ solutions. Results show that Pt/carbon composite nanofibers with 1-aminopyrene functionalization have Pt nanoparticles with a smaller size and better distribution compared with those treated with conventional acids. Moreover, Pt/1-aminopyrene-functionalized carbon nanofibers possess the properties of high active surface area, improved performance toward the electrocatalytic oxidation of methanol, and relatively good long-term stability.