Unravelling the promoting effect of the ultrathin TaC/RGO nanosheet hybrid for enhanced catalytic activity of Pd nanoparticles

He Chunyong; Tao Juzhou; He GuoqiangShen Pei KangQiu Yongfu

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Unravelling the promoting effect of the ultrathin TaC/RGO nanosheet hybrid for enhanced catalytic activity of Pd nanoparticles

机译：解体超薄的促进作用为增强催化TaC / RGO nanosheet混合Pd活性纳米颗粒

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摘要

A novel two-dimensional ultrathin TaC/reduced graphene oxide (RGO) nanosheet hybrid was employed as a co-catalyst to Pd nanoparticles (Pd/TaC-G). Compared to Pd/C, Pd/TaC-G exhibits remarkably enhanced catalytic activity, resistance to poisonous intermediates and durability for methanol oxidation reaction (MOR) in direct methanol fuel cells (DMFCs). Experimental results from X-ray photoelectron spectroscopy (XPS) and X-ray absorption spectroscopy (XAS) reveal the synergetic chemical coupling between the Pd nanoparticles and the TaC/RGO nanosheet hybrid, which is likely the reason for the enhanced catalytic activity of Pd/TaC-G. This work established a new strategy to overcome the drawbacks of the noble metal catalyst through improving the catalytic activity, resistance to poisonous intermediates and durability via a two-dimensional hybrid, providing a new approach to develop the next generation catalysts in DMFCs.

机译：一个新颖的二维超薄TaC /减少石墨烯氧化物(RGO) nanosheet混合作为Pd co-catalyst纳米颗粒(Pd / TaC-G)。催化活性显著提高,抵抗有毒的中间体和耐久性对甲醇氧化反应(铁道部)直接甲醇燃料电池(dmfc)。实验结果从x射线光电子能谱(XPS)和x射线吸收光谱学(xa)揭示了协同作用的化学物质钯纳米颗粒和之间的耦合TaC / RGO nanosheet混合,这是可能的提高催化活性的原因Pd / TaC-G。克服缺点的贵金属通过改善催化催化剂活动,抵制有毒的中间体通过一个二维混合和耐用性,下一步发展提供一种新方法一代dmfc的催化剂。

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来源
《Catalysis science & technology》 |2016年第19期|7086-7093|共8页
作者
He Chunyong; Tao Juzhou; He GuoqiangShen Pei KangQiu Yongfu;
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作者单位

Dongguan Univ Technol, Coll Chem & Environm Engn, Dongguan 523808, Guangdong, Peoples R China;

Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China;

Guangxi Univ, Collaborat Innovat Ctr Sustainable Energy Mat, Nanning 530004, Guangxi, Peoples R China;

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正文语种英语
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关键词
Durability; Nanoparticles; ultrathinCatalyst activityNanosheetsdirect methanol fuel cells;

机译：耐久性;纳米粒子;ultrathinCatalystactivityNanosheetsdirect甲醇燃料电池;

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Unravelling the promoting effect of the ultrathin TaC/RGO nanosheet hybrid for enhanced catalytic activity of Pd nanoparticles

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