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采用阳极氧化法,以氟化铵和硫酸铵的混合溶液为电解液,在不同的条件下制备TiO2/Ti纳米管(TNA)光电极;以罗丹明B为目标污染物,在光照条件下研究其催化性能。结果表明,在浓度为1 mol/L硫酸铵和0.119 mol/L氟化铵的电解液中,电压20 V,阳极氧化时间60 min,退火温度550℃,制备的TNA光电极有良好的光催化性能;钨掺杂可明显提高TNA光电极的光催化效率;在电压为3 V,掺杂时间为10 min的条件下,获得的W-TNA光电极光催化性能最好;W-TNA光电极光降解质量浓度5 mg/L的罗丹明B 80 min后,去除率可达到97.9%。
TiO2 / Ti nanotubes (TNA) photoelectrodes were prepared under different conditions by using anodic oxidation method with ammonium fluoride and ammonium sulfate mixed solution as electrolyte solution. With Rhodamine B as the target pollutant, Its catalytic performance. The results showed that the voltage of 20 V, the anodization time of 60 min and the annealing temperature of 550 ℃ were achieved in 1 mol / L ammonium sulfate and 0.119 mol / L ammonium fluoride electrolyte. The prepared TNA photoelectrode had good photocatalytic activity The photocatalytic performance of TNA photoelectrode was improved obviously. The photocatalytic activity of W-TNA photoelectrode was the best when the voltage was 3 V and the doping time was 10 min. After 80 mg rhodamine B with mass concentration of 5 mg / L, the removal rate could reach 97.9%.