【摘要】 利用电还原氯金酸制备了纳米金(Nano-gold,NG)修饰Au电极。该电极对葡萄糖有催化作用,可能是由于纳米金降低了OH-表面吸附能,增加了OH-在电极表面的吸附量。通过循环伏安法研究了扫描速度、温度、本体浓度和溶液pH值对葡萄糖氧化的影响。更多还原

【Abstract】 The electrocatalytic oxidation of glucose was performed in alkaline solutions at gold nanoparticles modified gold electrodes(NG/Au) and high catalytic activity of modified electrode was clearly demonstrated.The current densities were markedly increased and the oxidation of glucose occured at lower potentials obtained at NG/Au than that obtained at bare gold electrode,which maybe resulted from that the gold nanoparticles can selectively enhance oxidation of glucose and decrease the overvoltage for the formation of adsorbed OH-.The influences of scan rates(2~1 000 mV\5s-1),concentrations of glucose and hydroxide,temperature and the pH value on the oxidation of glucose have also been studied.更多还原