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2篇 您的检索式:作者名="Hongkai Bu"
    题名 作者 年代 出处 被引量
1The response of peatlands to climate warming:A review显示文摘BU Zhaojun HANS Joosten LI Hongkai 2011Acta Ecologica Sinica2011,31,3:1
2In situ growth of phosphorized ZIF-67-derived amorphous CoP/Cu_(2)O@CF electrocatalyst for efficient hydrogen evolution reaction显示文摘Transition metal phosphides have been extensively studied for catalytic applications in water splitting.Herein,we report an in situ phosphorization of zeolitic imidazole frameworks(ZIF-67)to generate amorphous cobalt phosphide/ZIF-67 heterojunction on a self-supporting copper foam(CF)substrate with excellent performance for hydrogen evolution reaction(HER).The needleleaf like copper hydroxide was anchored on CF surface,which acted as implantation to grow ZIF-67.The intermediate product was phosphorized to obtain final electrocatalyst(CoP/Cu_(2)O@CF)with uniform particle size,exhibiting a rhombic dodecahedron structure with wrinkles on the surface.The electrochemical measurement proved that CoP/Cu_(2)O@CF catalyst exhibited excellent HER activity and long-term stability in 1.0 mol·L^(–1)KOH solution.The overpotential was only 62 mV with the Tafel slope of 83 mV·dec^(–1)at a current density of 10 mA·cm^(–2),with a large electrochemical active surface area.It also showed competitive performance at large current which indicated the potential application to industrial water electrolysis to produce hydrogen.First-principle calculations illustrated that benefit from the construction of CoP/ZIF-67 heterojunction,the d-band center of CoP downshifted after bonding with ZIF-67 and the Gibbs free energy(ΔGH*)changed from–0.18 to–0.11 eV,confirming both decrease in overpotential and excellent HER activity.This work illustrates the efficient HER activity of CoP/Cu_(2)O@CF catalyst,which will act as a potential candidate for precious metal electrocatalysts.Ruiwen Qi Xiao Liu Hongkai Bu Xueqing Niu Xiaoyang Ji Junwei Ma Hongtao Gao 2023Frontiers of Chemical Science and Engineering2023,17,10:0
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