Pt-Pb六邊形納米板電催化甲醇氧化反應(yīng)中的表面元素分布效應(yīng)(英文)
發(fā)布時(shí)間:2021-08-02 13:26
由于副產(chǎn)物CO可降低純Pt催化劑的活性,因此雙金屬Pt基催化劑已經(jīng)廣泛用于提高直接甲醇燃料電池的性能.本文合成了Pt-Pb六邊形納米板,作為模型催化劑用于甲醇氧化反應(yīng)(MOR),并通過(guò)乙酸(HAc)處理進(jìn)一步控制納米板表面Pt和Pb的分布,從而得到Pt-Pb合金表面均相分布的Pt-Pb納米板以及非均勻分布的HAc處理的Pt-Pb納米板.結(jié)果表明,與HAc處理的Pt-Pb納米板相比, Pt-Pb納米板的MOR催化活性和穩(wěn)定性提高,這主要是由于親氧性Pb的加入提高了CO容忍度并修飾了Pt的電子結(jié)構(gòu).
【文章來(lái)源】:Chinese Journal of Catalysis. 2020,41(05)北大核心EISCICSCD
【文章頁(yè)數(shù)】:7 頁(yè)
【文章目錄】:
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
本文編號(hào):3317646
【文章來(lái)源】:Chinese Journal of Catalysis. 2020,41(05)北大核心EISCICSCD
【文章頁(yè)數(shù)】:7 頁(yè)
【文章目錄】:
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
本文編號(hào):3317646
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