论文部分内容阅读
利用液相沉积(LPD)法在ITO表面制备TiO2薄膜。光电流和交流阻抗(EIS)测试表明,这种TiO2/ITO液相沉积膜具有良好的光电性能,对紫外光产生灵敏、快速的电流响应,在此膜电极上通过施加一定的阳极偏压可有效分离光生电子-空穴对。将TiO2/ITO膜用于4-氨基安替比林的光电催化降解研究,与其他方法相比,利用此液相沉积膜电极的光电催化技术对于4-氨基安替比林的降解具有明显的协同效果,适合于该污染物的降解处理。当外加阳极偏压为+0.8 V,支持电解质Na2SO4浓度为0.1 mol/L,溶液pH为2.0时,0.1 mmol/L 4-氨基安替比林120 min的光电催化降解效率最高可达95%。
TiO2 thin films were prepared on ITO surface by liquid deposition (LPD) method. The photocurrent and AC impedance (EIS) tests showed that the TiO2 / ITO liquid-deposited film has good photoelectric properties and sensitive and fast current response to UV light. The membrane electrode can be fabricated by applying a certain anode bias voltage Effective separation of photogenerated electron-hole pairs. The photocatalytic degradation of 4-aminoantipyrine with TiO2 / ITO film was studied. Compared with other methods, the photoelectrocatalytic technique using this liquid-deposited film electrode has obvious effect on the degradation of 4-aminoantipyrine Synergistic effect, suitable for the degradation of the pollutants. The photoelectrocatalytic degradation efficiency of 0.1 mmol / L 4-aminoantipyrine was up to 95% when the anodic bias was +0.8 V, the supporting electrolyte Na2SO4 concentration was 0.1 mol / L and the solution pH was 2.0.