作者：Xiaohan Lia , Yanzhi Zhang a , Weixuan Wang a , Junjing Meng a ,Kuang Li a , Wenxin Lin a , Zhiqin Peng a , Junmin Wan a,b,* , Zhiwen Hu a,b
来源：international journal of hydrogen energy 44 (2019) 18072e18082
DOI：10.1016/j.ijhydene.2019.05.059
摘要：Hydrogen production from electrocatalytic water splitting has aroused extensive attention in many fields recently. Fabrication of low-cost and high-efficiency electrocatalysts are still an urgent and challenging work. Porphyrins as visible-light photosensitizers have been extensively utilized in visible-light photocatalysts and photoelectronic materials. So, fabrication of novel porphyrin-based complexes will be benefited for high-efficiency hydrogen evolution and photoelectric response. Here a series of zirconium porphyrin-based coordination complexes were successfully fabricated via a facile two-step strategy. Due to the unique long chain-like structure and low charge-transfer resistance, the zirconium porphyrin-based coordination complexes displayed excellent electrocatalytic performance for hydrogen evolution reaction. The ZrTPP-PTA-1 showed a low over-potential of 60 mV at the current density 10 mA cm-2 and a Tafel slope of 87 mV dec-1 with an ultralow electron transfer resistance of 17.5Ω. In addition, a quick photocurrent response occurred for these coordination complexes with a visible-light illumination. The photocurrent of the ZrTPP-OA-2 raised up to 2.5 mA under visible-light irradiation. With this pleasant result, these zirconium porphyrin-based coordination complexes have a great potential to become available alternative of current noble electrocatalysts for photoelectric application.
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