| 铂/酞菁/碳纳米管复合纳米催化剂的构建及其甲醇氧化性能 |
| Platinum/Phthalocyanine/Carbon Nanotubes Catalyst: Construction and Electrocatalytic Property for Methanol Oxidation |
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| 摘要: 本文报道了一种方便地构建铂/酞菁/碳纳米管(Pt/Pc/CNTs)复合纳米催化剂的新方法：先通过简单的超声处理将酞菁分子(Pc)修饰至碳纳米管表面，随后采用乙二醇还原法将铂纳米粒子固载到酞菁修饰的碳纳米管表面，形成Pt/Pc/CNTs复合纳米催化剂。X射线衍射(XRD)和透射电镜(TEM)结果表明金属铂纳米颗粒均匀地分散在碳纳米管表面，尺寸约5 nm。采用UV-Vis、FTIR和Raman等手段研究了这种复合纳米催化剂的构建过程，结果表明酞菁分子与碳纳米管之间存在较强的π-π相互作用，使其能牢固地吸附于碳 |
| 关键词: 直接甲醇燃料电池 酞菁 碳纳米管 铂纳米粒子 |
| 基金项目: |
| Abstract: A method has been developed for the convenient construction of platinum/phthalocyanine/carbon nanotubes (Pt/Pc/CNTs) nanocomposite catalyst, i.e., CNTs were firstly decorated with phthalocyanine by ultrasonic treatment, then Pt nanoparticles were deposited onto their surface by ethylene glycol reduction. XRD and TEM characterization results indicated that metallic Pt nanoparticles with sizes of ～5 nm were evenly distributed on the surface of CNTs. The constructing process of this nanocomposite catalyst was studied by UV-Vis, FTIR and Raman. It was revealed that Pc could be firmly adsorbed on CNTs due to the strong π-π interactions between them. As known, Pc could easily coordinate with Pt ions, which might be the main reason for the final high dispersion of Pt nanoparticles. This study indicates that the introduction of Pc molecules could effectively enhance the distribution of Pt nanoparticles on CNTs, and the so-constructed nanocomposite catalyst presents much better electrocatalytic property for methanol oxidation than the Pt nanocatalyst supported on pristine CNTs. |
| Keywords: direct methanol fuel cell phthalocyanine carbon nanotube platinum |
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| 钱敏杰,蒋湘芬,王喜章,蹇国强,胡 征.铂/酞菁/碳纳米管复合纳米催化剂的构建及其甲醇氧化性能[J].无机化学学报,2008,24(8):1278-1283. |
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