Pt-Pb六边形纳米板电催化甲醇氧化反应中的表面元素分布效应(英文)
发布时间:2021-08-02 13:26
由于副产物CO可降低纯Pt催化剂的活性,因此双金属Pt基催化剂已经广泛用于提高直接甲醇燃料电池的性能.本文合成了Pt-Pb六边形纳米板,作为模型催化剂用于甲醇氧化反应(MOR),并通过乙酸(HAc)处理进一步控制纳米板表面Pt和Pb的分布,从而得到Pt-Pb合金表面均相分布的Pt-Pb纳米板以及非均匀分布的HAc处理的Pt-Pb纳米板.结果表明,与HAc处理的Pt-Pb纳米板相比, Pt-Pb纳米板的MOR催化活性和稳定性提高,这主要是由于亲氧性Pb的加入提高了CO容忍度并修饰了Pt的电子结构.
【文章来源】:Chinese Journal of Catalysis. 2020,41(05)北大核心EISCICSCD
【文章页数】:7 页
【文章目录】:
1. Introduction
2. Experimental
2.1. Chemicals and materials
2.2. Preparation of Pt-Pb bimetallic hexagonal nanoplates
2.3. Preparation of Pt-Pb nanoplates loaded on carbon(Pt-Pb nanoplates/C)
2.4. HAc treatment of Pt-Pb nanoplates/C
2.5. Morphological,structural,and elemental characterization
2.6. Electrochemical characterization
3. Results and discussion
4. Conclusions
Graphical Abstract
本文编号:3317646
【文章来源】:Chinese Journal of Catalysis. 2020,41(05)北大核心EISCICSCD
【文章页数】:7 页
【文章目录】:
1. Introduction
2. Experimental
2.1. Chemicals and materials
2.2. Preparation of Pt-Pb bimetallic hexagonal nanoplates
2.3. Preparation of Pt-Pb nanoplates loaded on carbon(Pt-Pb nanoplates/C)
2.4. HAc treatment of Pt-Pb nanoplates/C
2.5. Morphological,structural,and elemental characterization
2.6. Electrochemical characterization
3. Results and discussion
4. Conclusions
Graphical Abstract
本文编号:3317646
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