Abstract Catalytic activities for hydrogen (H2) evolution of cobalt 5,10,15-tris(phenyl)corrole (1) and 5,10,15-tris(4-nitrophenyl)corrole (2) (in homogeneous system was examined from acetic acid and water. In phosphate buffer solution (pH 7.0), the hydrogen evolution turnover frequency (TOF) for 1 and 2 were 62 and 150 h−1 at the overpotential of −1.53 V versus Ag/AgCl. In acetic acid media, hydrogen evolution TOF for 1 and 2 were 56 and 127 h−1, respectively, at an overpotential of 961 mV versus Ag/AgNO3. In the practical electrocatalytic hydrogen evolution experiment at −1.45 V (vs. Ag/AgCl) overpotential for 1 h, the TOF were 76 and 188 h−1 for 1 and 2, respectively. No observable decomposition of the catalyst could be observed after electrolysis for 72 h with a glassy carbon electrode.

中文翻译：

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三(4-硝基苯基)钴对从水中析氢的电催化活性

摘要 5,10,15-三(苯基)钴(1)和5,10,15-三(4-硝基苯基)钴(2)(在均相体系中从乙酸中检测出氢(H2)析出的催化活性酸和水。在磷酸盐缓冲溶液 (pH 7.0) 中，在 -1.53​​ V 相对于 Ag/AgCl 的过电位下，1 和 2 的析氢周转频率 (TOF) 分别为 62 和 150 h-1。在乙酸介质中，氢气1 和 2 的演化 TOF 分别为 56 和 127 h-1，在过电位为 961 mV 对 Ag/AgNO3。在-1.45 V（相对于 Ag/AgCl）过电位的实际电催化析氢实验中，1 小时， 1 和 2 的 TOF 分别为 76 和 188 h-1。使用玻碳电极电解 72 小时后未观察到催化剂的分解。