张婷婷;陈嘉星;李忠水;雷丰玲;王艳丽;林深;

• 1:福建师范大学化学与化工学院

摘要(Abstract)：

以氢气为还原剂,合成了高分散性的Pt_(-square)/石墨烯纳米复合物(Pt_(-square)/GNs).采用透射电子显微镜(TEM)、X-射线衍射(XRD)、X-射线电子能谱(XPS)及拉曼光谱(Ramam)等对Pt_(-square)/GNs样品进行了分析表征.分析结果表明氧化石墨、氯氩铂酸根离子被氢气彻底还原,特别是Pt前驱物的还原对氧化石墨的还原起原位同步催化作用,所获得的Pt纳米粒子呈现独特的方块状,平均直径为5 nm,均匀分布在石墨烯表面上.采用循环伏安法、计时电流法、CO溶出伏安法等电化学方法研究所合成复合物对甲醇氧化的电催化性能,结果表明相对于Pt/Vulcan XC-72R催化剂和商品化Pt/C催化剂,在碱性介质中Pt_(-square)/GNs对甲醇氧化表现出更高的电化学活性(680 m A·mg^(-1))、更好的催化剂稳定性及更强的抗CO毒化能力.

关键词(KeyWords)： Pt催化剂;氢气还原法;石墨烯;甲醇氧化

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(21171037);; 国家级大学生创新训练项目(201510394007);; 福建省教育厅科技资助项目(JA13082、JB13010)

作者(Authors): 张婷婷;陈嘉星;李忠水;雷丰玲;王艳丽;林深;

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