Ru负载Co_(3)O_(4)催化剂的制备及其电解糠醛性能研究

Preparation of Ru Supported Co_(3)O_(4) Catalyst and its Electrolytic Performance of Furfural

近年来,过渡金属基催化剂(TMOs)在探索高性能的糠醛氧化方面备受关注,但较低的本征活性限制其应用,合理优化TMOs的电子结构是提高糠醛氧化催化性能的有效策略。采用电沉积和浸渍法成功制备了Ru-Co_(3)O_(4)/CP催化剂,并通过电化学测试评价FOR和HER的催化性能。在1.0 mol/L KOH溶液中加入50 mmol/L糠醛后,Ru-Co_(3)O_(4)/CP催化剂达到10 mA/cm^(2)电流密度仅需要1.41 VRHE,与不加糠醛相比,降低了100 mV。以Ru-Co_(3)O_(4)/CP为阴极和阳极的催化剂构筑两电极电解槽,与全解水相比,电解糠醛在达到30 mA/cm^(2)的电流密度所需要的电解电压降低了60 mV,同时在阴极和阳极得到了高价值的H_(2)和糠酸。

In recent years,transition metal-based catalysts(TMOs)attracted much attention in the exploration of high performance furfural oxidation.However,its low intrinsic activity limited its application.Optimizing the electronic structure of TMOs would be an effective strategy to improve the catalytic performance of furfural oxidation.Ru-Co_(3)O_(4)/CP catalyst was successfully prepared by electrodeposition and impregnation.The catalytic performance of FOR and HER was evaluated by electrochemical testing.After adding 50 mmol/L furfural in 1.0 mol/L KOH solution,Ru-Co_(3)O_(4)/CP catalyst with only 1.41 VRHE could reach 10 mA/cm^(2) current density,which was 100 mV lower than that without furfural.Using Ru-Co_(3)O_(4)/CP as the cathode and anode catalysts to construct a two-electrode electrolytic cell,the electrolytic voltage required for the electrolytic furfural to reach the current density of 30 mA/cm^(2) was reduced by 60 mV compared with the total water solution,and high value H_(2) and furancarboxylic acid were obtained at the cathode and anode.