Microporous Organic Polymers Derived Microporous Carbon Supported Pd Catalysts for Oxygen Reduction Reaction: Impact of Framework and Heteroatom
Microporous Organic Polymers Derived Microporous Carbon Supported Pd Catalysts for Oxygen Reduction Reaction: Impact of Framework and Heteroatom
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微孔有机聚合物衍生的微孔碳负载钯催化剂用于氧还原反应：骨架和杂原子的影响
DOI：
10.1021/acs.jpcc.5b10358
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发表时间：
2016
影响因子：
3.7
通讯作者：
Tao Li
中科院分区：
文献类型：
--
作者：
Kunpeng Song;Zhijuan Zou;Deli Wang;Bien Tan;Jingyu Wang;Jian Chen;Tao Li
通过将贵金属催化剂负载在多孔碳上，可以最大限度地减少氧还原反应（ORR）中贵金属催化剂的使用。本文中，开发了一种简单且工业上可扩展的用于制备多孔碳载体的方法，其通过直接热解微孔有机聚合物（MOPs）来实现。MOPs中的刚性芳族结构单元起到自模板的作用，以在碳化过程中保持高的表面积和规则的孔分布，从而形成高质量的微孔碳框架。评价了以MOPs为碳源负载Pd催化剂的电化学性能，并与商业产品进行了比较，表明MOPs作为碳源的优越性。由于骨架和杂原子的影响，在三种类型的MOPs中观察到ORR活性的显著差异。Pd/CKN催化剂的最高性能归因于杂原子诱导的电子结构的改变，除了稳定的骨架。
The usage of noble metal catalysts for oxygen reduction reaction (ORR) can be minimized by supporting them on porous carbon. Herein, a simple and industrially scalable approach for preparation of porous carbon supports is developed by directly pyrolyzing microporous organic polymers (MOPs). The rigid aromatic building blocks in MOPs function as self-templates to retain the high surface area and regular pore distribution during carbonization to the formation of high quality microporous carbon framework. The electrochemical performance of Pd catalysts supporting on MOPs-derived carbons is evaluated and compared with commercial products, indicating the superiority of MOPs as carbon precursor. Significant difference in ORR activity is observed among three types of MOPs due to the impact of framework and heteroatom. The highest performance of Pd/CKN catalyst is attributed to heteroatom-induced altering of electronic structures besides the stable skeleton.