通过调节电解质溶液的 pH 值，研究了 pH值对氧化钛纳米管阵列形貌的影响，研究表明水质电解液pH 值控制在3~5时，氧化钛纳米管阵列的形貌更加规则。通过瞬态电流变化、短路电流-开路电压、电化学阻抗谱分析了在 pH 值=4的电解液中制备的氧化钛纳米管阵列的光电性能及电化学性能。研究表明经热处理的锐态型氧化钛纳米管阵列具有较好的光敏特征和光电转换性能，并表现出明显的高频阻低频电容电化学特性。
In this paper,the effect of the electrolyte’s pH value on the microcosmic images of the titania nano-tube arrays was studied.The results indicate that titania nanotube arrays with more regular tube array structure usually formed in electrolyte with pH value 3-5.Current-voltage (I-V),transient photocurrents (I-t)and elec-trochemical impedance spectroscopy (EIS)were measured to test the photoelectronic and the electrochemistry performance of TiO2 nanotube arrays.The results indicate that the titania nanotube arryas has good photoelec-tronic and electrochemistry performance after heat-treated,and appears obvious electrochemistry character with high frequency resistance and low frequency capacitance.
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