Abstract
Electrocatalytic glucose oxidation reaction(GOR)has attracted much attention owing to its crucial role in biofuel cell fab-rication.Herein,we load MoO3 nanoparticles on carbon nanotubes(CNTs)and use a discharge process to prepare a noble-metal-free MC-60 catalyst containing MoO3,Mo2C,and a Mo2C-MoO3 interface.In the GOR,MC-60 shows activity as high as 745 μA/(mmol/L cm2),considerably higher than those of the Pt/CNT(270 μA/(mmol/L cm2))and Au/CNT catalysts(110 μA/(mmol/L cm2)).In the GOR,the response minimum on MC-60 is as low as 8 μmol/L,with a steady-state response time of only 3 s.Moreover,MC-60 has superior stability and anti-interference ability to impurities in the GOR.The better performance of MC-60 in the GOR is attributed to the abundant Mo sites bonding to C and O atoms at the MoO3-Mo2C interface.These Mo sites create active sites for promoting glucose adsorption and oxidation,enhancing MC-60 performance in the GOR.Thus,these results help to fabricate more efficient noble-metal-free catalysts for the fabrication of glucose-based biofuel cells.
基金项目
国家自然科学基金(82170426)
国家自然科学基金(22078193)
Double Thousand Plan of Jiangxi Province(461654)
Double Thousand Plan of Jiangxi Province(jxsq2019102052)
万方数据