Iron porphyrin-derived ordered carbonaceous frameworks
Iron porphyrin-derived ordered carbonaceous frameworks
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DOI：
10.1016/j.cattod.2020.07.003
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发表时间：
2020-07
期刊：
影响因子：
5.3
通讯作者：
Masanori Yamamoto;Kazuma Takahashi;Mao Ohwada;Yuxin Wu;Kazuyuki Iwase;Y. Hayasaka;H. Konaka;H. Cove;D. Di Tommaso;K. Kamiya;J. Maruyama;F. Tani;H. Nishihara
中科院分区：
文献类型：
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作者：
Masanori Yamamoto;Kazuma Takahashi;Mao Ohwada;Yuxin Wu;Kazuyuki Iwase;Y. Hayasaka;H. Konaka;H. Cove;D. Di Tommaso;K. Kamiya;J. Maruyama;F. Tani;H. Nishihara
通过在高于600 °C的温度下热解具有乙炔基作为可聚合/可碳化部分的铁卟啉，合成了铁并入的有序碳质框架（OCF）。采用热重-差热分析-质谱联用仪分析了热解行为，并采用X射线衍射、X射线吸收精细结构和高角度环形暗场扫描透射电子显微镜对所得炭材料进行了表征。乙炔基基团在外围苯基基团的间位的引入对于热聚合时的有效交联是必不可少的。由此获得的热稳定聚合物可以在随后的碳化中以93%的高碳化产率转化为OCF。OCF具有周期性的结构规律和卟啉Fe-N4配位结构，对CO2转化为CO具有电催化作用。
Iron-incorporated ordered carbonaceous frameworks (OCFs) have been synthesized by the pyrolysis of iron porphyrin with ethynyl groups as polymerizable/carbonizable moieties at a temperature higher than 600 °C. The pyrolysis behavior is analyzed by thermogravimetry-differential thermal analysis-mass spectrometry, and the obtained carbon materials are characterized by X-ray diffraction, X-ray absorption fine structure, and high-angle annular dark-field scanning transmission electron microscopy. The introduction of ethynyl groups at themetapositions of the peripheral phenyl groups is essential for efficient cross-linking upon thermal polymerization. The thermally stable polymer thus obtained can be transformed into OCFs with high carbonization yield of 93 % at the subsequent carbonization. OCFs possess periodic structural regularity and porphyrin Fe-N4coordination structure, and exhibit electrocatalysis for the conversion of CO2into CO.