One‐Pot Synthesis of Platinum–Ceria/Graphene Nanosheet as Advanced Electrocatalysts for Alcohol Oxidation
One‐Pot Synthesis of Platinum–Ceria/Graphene Nanosheet as Advanced Electrocatalysts for Alcohol Oxidation
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DOI：
10.1002/celc.201402432
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发表时间：
2015-06
期刊：
影响因子：
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通讯作者：
Ling Zhang;Yi Shen
中科院分区：
文献类型：
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作者：
Ling Zhang;Yi Shen
通过简单的一锅合成方法制备了三组分铂-铈/石墨烯纳米片杂化物（Pt-CeO2−x/GNS），并对其作为醇（甲醇、乙醇、乙二醇和甘油）氧化的电催化剂进行了研究。采用透射电镜、X射线衍射和X射线光电子能谱（XPS）对催化剂的结构进行了表征。结果表明，超细Pt颗粒紧密沉积在CeO2−x和GNS载体的界面上，形成了丰富的Pt - CeO2−x/GNS三重结。XPS结果表明催化剂中存在较强的金属-载体相互作用。结果表明，Pt - ceo2−x/GNS催化剂的催化性能优于Pt/GNS催化剂。Pt-CeO2−x/GNS催化剂具有优异的催化性能，主要归因于Pt-CeO2−x/GNS三结的存在，促进了各组分的协同作用。
A three‐component platinum–ceria/graphene nanosheet hybrid (Pt–CeO2−x/GNS) was prepared through a facile one‐pot synthesis method and examined as an electrocatalysts for alcohol (methanol, ethanol, ethylene glycol, and glycerol) oxidation. The structures of the catalysts were characterized by using transmission electron microscopy, X‐ray diffraction, and X‐ray photoelectron spectroscopy (XPS). It was found that ultrafine Pt particles were intimately deposited at the interface of the CeO2−xand GNS support, resulting in the formation of abundant Pt–CeO2−x/GNS triple junctions in the hybrid. XPS results indicated a strong metal–support interaction in the catalyst. It was demonstrated that Pt–CeO2−x/GNS showed superior catalytic performance in comparison with the Pt/GNS catalyst. The superior catalytic performance of the Pt–CeO2−x/GNS catalyst was attributed to the presence of Pt–CeO2−x/GNS triple junctions, which facilitated the synergistic effects of the constituents.