Boosting hydrogen evolution by using covalent frameworks of fluorinated cobalt porphyrins supported on carbon nanotubes.
Boosting hydrogen evolution by using covalent frameworks of fluorinated cobalt porphyrins supported on carbon nanotubes.
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DOI：
10.1039/c9cc06916j
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发表时间：
2019-10
影响因子：
4.9
通讯作者：
Gelun Xu;Haitao Lei;Guojun Zhou;Chaochao Zhang;Lisi Xie;Wei Zhang;Rui Cao
中科院分区：
文献类型：
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作者：
Gelun Xu;Haitao Lei;Guojun Zhou;Chaochao Zhang;Lisi Xie;Wei Zhang;Rui Cao
设计并合成了四(2,3,5,6-四氟-4-乙炔基苯基)钴(ii)卟啉(FCoP-H)。通过碳纳米管模板聚合，可以通过 Hay 偶联合成使用 FCoP-H 的共价卟啉骨架。所得的FCoP@CNT能够有效地催化水介质中的析氢反应（HER），并且在较低的过电势和较大的催化电流方面，其性能优于使用非氟化钴卟啉类似物的共价卟啉骨架以及简单吸附在CNT上的单体氟化钴卟啉。这项工作结合了碳纳米管模板共价框架和氟化钴卟啉的优点，显着提高了 HER 性能。该策略对于使用分子工程碳材料的其他电催化系统进行探索很有价值。
A cobalt(ii) tetrakis(2,3,5,6-tetrafluoro-4-ethynylphenyl)porphyrin (FCoP-H) was designed and synthesized. With carbon-nanotube-templated polymerization, covalent porphyrin frameworks using FCoP-H can be synthesized via the Hay-coupling. The resulting FCoP@CNT is efficient to catalyze the hydrogen evolution reaction (HER) in aqueous media, and its performance is superior, in terms of both lower overpotentials and larger catalytic currents, to covalent porphyrin frameworks using non-fluorinated cobalt porphyrin analogues and also monomeric fluorinated cobalt porphyrins simply adsorbed on CNTs. This work combines the merits of CNT-templated covalent frameworks and fluorinated cobalt porphyrins to significantly improve the HER performance. This strategy is valuable to be explored in other electrocatalytic systems using molecule-engineered carbon materials.