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4篇 您的检索式:作者名="Xialiang Li"
    题名 作者 年代 出处 被引量
1A cobalt(Ⅱ)porphyrin with a tethered imidazole for efficient oxygen reduction and evolution electrocatalysis显示文摘Electrocatalytic oxygen reduction and evolution reactions are involved in new energy conversion and storage technologies,such as various fuel cells and metal-air batteries and also water splitting devices[1,2].However,both reactions are very slow in kinetics,and thus catalysts are required[3,4].Xialiang Li Ping Li Jindou Yang Lisi Xie Ni Wang Haitao Lei Chaochao Zhang Wei Zhang Yong-Min Lee Weiqiang Zhang Shunichi Fukuzumi Wonwoo Nam Rui Cao 2023Journal of Energy Chemistry2023,,1:1
2Comparing electrocatalytic hydrogen and oxygen evolution activities of first-row transition metal complexes with similar coordination environments显示文摘Developing cheap and efficient electrocatalysts for water splitting is required for energy conversion techniques.Many first-row transition metal complexes have been shown to be active for the hydrogen evolution reaction(HER)and oxygen evolution reaction(OER).Metal ions play crucial roles in these catalytic processes,but the activity dependence on the nature of metal ions has been rarely studied due to the difficulty to compare metal complexes with different coordination environments.We herein reported the synthesis of a series of metal complexes of azido-substituted porphyrin(1),in which metal ions have very similar coordination environments.By grafting 1-M(M=Mn,Fe,Co,Ni,and Cu)onto alkynefunctionalized carbon nanotubes(CNTs)through the same covalent connection,the resulted hybrids 1-M@CNT were all active and robust for both electrocatalytic HER and OER in alkaline aqueous solutions.Among these hybrids,1-Fe@CNT displayed the highest electrocatalytic activity for HER,while 1-Co@CNT was the most active one for OER.Moreover,a two-electrode water electrolysis cell assembled with 1-Fe@CNT as the cathode and 1-Co@CNT as the anode required smaller applied bias potential by210 mV to get 10 mA/cm^(2)current density as compared to that assembled with Pt/C and Ir/C with the same amount of metal loading.This work is significant to correlate HER and OER activity with the nature of first-row transition metal ions and to highlight promising potential applications of molecular electrocatalysis in water splitting.Xiaotong Jin Xialiang Li Haitao Lei Kai Guo Bin Lv Hongbo Guo Dandan Chen Wei Zhang Rui Cao 2021Journal of Energy Chemistry2021,30,12:1
3Bioinspired iron porphyrins with appended poly-pyridine/amine units for boosted electrocatalytic CO_(2) reduction reaction显示文摘Developing highly efficient electrocatalysts for the CO_(2) reduction reaction(CO_(2)RR)has attracted increasing interest in the past decade.Herein,we report on the design and synthesis of Fe porphyrin 1 with an appended N,N-di(2-picolyl)ethylenediamine(DPEN)unit that boosts electrocatalytic activity for CO_(2)-to-CO conversion in acetonitrile with water as the proton source.By mimicking carbon monoxide dehydrogenase(CODH),1 has poly-pyridine/amine units located at the active site to form hydrogen-bonded water-containing networks that enable fast proton transfer.The protonated and positively charged DPEN unit can also stabilize CO_(2) reduction intermediates through electrostatic and hydrogen-bonding interactions.These factors make 1 a highly active electrocatalyst for the CO_(2)RR by achieving a TOFmax of 5.0​×​10^(4)​s^(−1) with water providing the protons.These critical roles of the DPEN unit in the CO_(2)RR are further supported by theoretical studies.This work is significant to highlight the benefits of using molecular catalysts to elucidate structural effects.Jinxiu Han Ni Wang Xialiang Li Haitao Lei Yabo Wang Hongbo Guo Xiaotong Jin Qingxin Zhang Xinyang Peng Xue-Peng Zhang Wei Zhang Ulf-Peter Apfel Rui Cao 2022eScience2022,2,6:0
4Tuning Electronic Structures of Covalent Co Porphyrin Polymers for Electrocatalytic CO_(2) Reduction in Aqueous Solutions显示文摘Improving the selectivity of the electrocatalytic CO_(2) reduction reaction(CO_(2)RR)over hydrogen evolution in aqueous solutions is required but challenging because the two reactions occur at close thermodynamic potentials and compete with each other.Herein,we report on the selective CO_(2)RR in aqueous solutions utilizing covalent Co porphyrin polymers with fine-tuned electronic structures.Yabo Wang Xue-Peng Zhang Haitao Lei Kai Guo Gelun Xu Lisi Xie Xialiang Li Wei Zhang Ulf-Peter Apfel Rui Cao 2022CCS Chemistry2022,4,9:0
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