CTAB assisted microwave synthesis of ordered mesoporous carbon supported Pt nanoparticles for hydrogen electro-oxidation
2007; Elsevier BV; Volume: 52; Issue: 14 Linguagem: Inglês
10.1016/j.electacta.2007.01.007
ISSN1873-3859
AutoresJianhua Zhou, Jianping He, Yajun Ji, Wang-Juan Dang, Xiaolei Liu, Guiwang Zhao, Chuanxiang Zhang, Ji-shuang Zhao, Qingbin Fu, Huo-ping Hu,
Tópico(s)Catalytic Processes in Materials Science
ResumoMesoporous carbon with ordered hexagonal structure derived from the co-assembly of triblock copolymer F127 and resol was employed as the carbon support of Pt catalysts for hydrogen electro-oxidation. Structural characterizations revealed that the mesoporous carbon exhibited large surface area and uniform mesopores. The Pt nanoparticles supported on the novel mesoporous carbon were fabricated by a facile CTAB assisted microwave synthesis process, wherein CTAB was expected to improve the wettability of carbon support as well as the dispersion of Pt nanoparticles. X-ray diffraction and transmission electron microscopy were applied to characterize the Pt catalysts. It was found that the Pt nanoparticles were uniform in size and highly dispersed on the mesoporous carbon supports. The cyclic voltammograms in sulfuric acid demonstrated that the electrochemical active surface area of Pt catalysts prepared with CTAB was two times than that without CTAB.
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