引言已经证明零电荷点(pzc)的测量检测用作电催化阳极的氧化物的表面结构细小变化的强有力手段。这种实验方法已经能解释制备温度对RuO_2和Co_3O_4表面性质的影响。尤其是RuO_2的pzc表现随煅烧温度有规律的增大,这与观察到O_2析出机理随电极制备程序不同而变 Introduction It has been demonstrated that the measurement of the zero charge point (pzc) detects a powerful means of acting as a fine change in the surface structure of the oxide of an electrocatalytic anode. This experimental method has been able to explain the effect of preparation temperature on the surface properties of RuO_2 and Co_3O_4. In particular, the pzc performance of RuO_2 increases regularly with the calcination temperature, which is different from that observed for the precipitation mechanism of O_2