碳纳米管
材料科学
催化作用
碳纤维
粒径
化学工程
纳米颗粒
纳米技术
沉积(地质)
热解
粒子(生态学)
原子层沉积
图层(电子)
化学
复合材料
复合数
有机化学
古生物学
沉积物
工程类
海洋学
地质学
生物
作者
Meng Jin,Rong Wang,Bin Jia,Jun Zhang,Hui Liu,Shiyu Lu
标识
DOI:10.1016/j.apsusc.2022.153201
摘要
The surface microenvironment of supports, including surface state and constitution, are crucial adjective factors to the dispersibility and particle size of Pt nanoparticles (NPs) on carrier, follow-up affecting their catalytic activities for methanol oxidation reaction (MOR). Here an in-situ pyrolysis approach is reported for preparing bamboo-like N doped carbon nanotubes coupled with fewer metallic particles ([email protected] (M = Co, Ni and Fe3C)), enabled tunable surface state and constitution of carbon layers. Combined experimental and theoretical investigation, as fabricated [email protected] provide optimal surface of backbone for Pt deposition with narrowest particle size distribution and minimum size by virtue of dominated pyridinic-N, enriched defect, abundant wrinkle and fewer number of carbon layer, which exhibits superior MOR performance as well as long-lifespan. Our findings not only exhibit some new insights for accurate modulation and optimization of carbon skelecton at the atomic scale in fundamental, but also reveal the structural and compositive origin of the enhanced catalytic activity towards to MOR.
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