采用KBH4做还原剂、PVP做保护剂,化学法一步合成Au-Pt合金纳米粒子,应用UV-Vis、TEM、XRD等手段对其进行了表征.将所合成的合金纳米粒子负载在碳黑上,获得Au-Pt双金属碳载催化剂,应用循环伏安法(CV)检测了催化剂对甲醇的电催化氧化活性.研究表明,Au-Pt/C催化剂的催化活性明显高于Pt/C的,说明Au与Pt具有明显的协同作用,同时发现其催化活性与Au、Pt摩尔比有关.
参考文献
| [1] | 董颖男,杨喜昆,唐春.金在低温燃料电池技术中的应用前景[J].贵金属,2009(03):50-53,78. |
| [2] | Luo J;Njoki PN;Lin Y;Mott D;Wang LY;Zhong CJ .Characterization of carbon-supported AuPt nanoparticles for electrocatalytic methanol oxidation reaction[J].Langmuir: The ACS Journal of Surfaces and Colloids,2006(6):2892-2898. |
| [3] | Kristian N;Wang X .Pt-shell-Au-core/C electrocatalyst with a controlled shell thickness and improved Pt utilization for fuel cell reactions[J].Electrochemistry communications,2008(1):12-15. |
| [4] | Zeng Jianhuang;Yang Jun;Jim Yang Lee et al.Preparation of carbon-supported Core-shell Au-Pt nanoparticles for methanol oxidation reaction:The promotional effect of the Au Core[J].Journal of Physical Chemistry B,2006,110:24606-24611. |
| [5] | 于志辉,田密,焦庆影,夏定国.Au-Pt双金属纳米颗粒在玻碳电极上的自组装[J].物理化学学报,2006(08):1015-1020. |
| [6] | 徐娇珍,杨平,华南平,胡成松,杜玉扣.Pt/Au双金属纳米粒子的制备及表征[J].化学研究与应用,2003(06):838-840. |
| [7] | Supfiya Devarajan;Parthasarathi Bera .Sampath S.Bimetallic nanopartieles:A single step synthesis,stabilization,and characterization of Au-Ag,Au-Pd,andAu-Ptin sol-gel derived silicates[J].Journal of Colloid and Interface Science,2005,209(01):117-129. |
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