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电化学阻抗谱(EIS)研究了二氧化钛纳米棒在水光电解系统中的光催化性能,提出双通道传输线模型诠释主要电荷转移过程的频率响应,过程在纳米棒/电解质和铂/电解质界面上产生。采用EIS来确定退火处理对光电流密度的有吸引力影响,起因于二氧化钛/电解质界面上只有很少电荷传输。X射线光电子谱和热重量分析法测量证明这与从TiO_2纳米棒合成过程存在氯有关。
Electrochemical impedance spectroscopy (EIS) was used to investigate the photocatalytic activity of titania nanorods in aqueous photoelectrolysis system. A dual channel transmission line model was proposed to interpret the frequency response of the main charge transfer process. The process was initiated at the nanorods / electrolyte and platinum / electrolyte interface . The use of EIS to determine the attractive effect of anneal on photocurrent density results from the very small charge transport at the titania / electrolyte interface. X-ray photoelectron spectroscopy and thermogravimetric measurements demonstrate that this is related to the presence of chlorine from the synthesis of TiO 2 nanorods.