Ni-Co/Ti催化剂制备及其对葡萄糖的电催化氧化

Fabrication of Bimetallic Ni-Co/Ti Electrode for Glucose Electrooxidation

采用水热法制备了一种新型多孔镍钴修饰钛电极(Ni-Co/Ti)。利用循环伏安、电位阶跃等电化学技术研究了碱性溶液中Ni-Co/Ti电极对葡萄糖氧化的电催化活性。双电位阶跃分析表明,葡萄糖在该体系中的扩散系数为6.50×10-6cm2/s,葡萄糖在Ni-Co/Ti电极电化学氧化反应速率常数为3.57×104cm3/(mol.s)。实验表明,Ni-Co/Ti电极对葡萄糖氧化具有优异的电催化活性。

Bimetallic Ni-Co nanoparticles were deposited on a titanium surface using a simple hydrothermal method process. The electrochemical catalytic activity of this titanium-supported Ni-Co/Ti electrode towards the oxidation of glucose in 0. 5mol/L NaOH was evaluated by voltammetric techniques. According to the cyclic voltammograms of the glucose oxidation, the Ni-Co/Ti presented high anodic current densities and low onset potentials. It confirmed the high electrocatalytic activity of the Ni-Co/Ti for the glucose oxidation.