张钦库,胡大伟,刘聪,石廷鼐,赵强.铜卟啉修饰In2TiO5纳米带的制备及其光催化性能[J].环境科学学报,2021,41(4):1359-1365
铜卟啉修饰In2TiO5纳米带的制备及其光催化性能
- Synthesis of porphyrin copper-sensitized In2TiO5 nanobelts and its photocatalytic activity
- 基金项目：榆林学院高层次人才科研启动基金（No.17GK17）
- 张钦库
- 榆林学院, 建筑工程学院, 榆林 719000
- 胡大伟
- 榆林学院, 建筑工程学院, 榆林 719000
- 刘聪
- 榆林学院, 建筑工程学院, 榆林 719000
- 石廷鼐
- 榆林学院, 建筑工程学院, 榆林 719000
- 赵强
- 榆林学院, 建筑工程学院, 榆林 719000
- 摘要：以5，10，15，20-四苯基铜卟啉（CuTPP）和5-（4-氨基苯基）-10，15，20-三苯基铜卟啉（CuAPTPP）为敏化剂，采用溶剂热法成功制备了铜卟啉敏化In2TiO5复合光催化剂.利用紫外、FT-IR、XRD、SEM、UV-vis DRS和N2吸附脱附曲线对所得铜卟啉及复合光催化剂进行表征和分析.结果表明，铜卟啉负载于In2TiO5纳米带表面，复合光催化剂的禁带宽度及比表面积出现一定程度的减小，但未改变In2TiO5的晶型及形貌.其中，CuTPP敏化In2TiO5复合光催化剂的光催化活性最强，在模拟太阳光的照射下，120 min时罗丹明B（RhB）的降解率高达98.9%，而In2TiO5纳米带对RhB的降解率仅为33.5%，且循环使用5次后其光催化降解率仍保持在95%以上.
- Abstract：Using 5,10,15,20-Tetraphenyl copper porphyrin (CuTPP) and 5-(4-aminophenyl)-10,15,20-triphenyl copper porphyrin (CuAPTPP) as a sensitizer, the composites of copper porphyrin and In2TiO5 were prepared by solvothermal method. The photocatalysts were characterized by UV-Vis, FT-IR, SEM, UV-vis DRS and N2 adsorption-desorption isotherms. The results showed that the energy gap and surface area of the photocatalysts were decreased by the exist of copper porphyrin on its surface. However, the composite did not change the crystal structure and morphology of In2TiO5. CuTPP/In2TiO5 composite exhibited the best performance. The degradation rate of RhB reached 98.9% under simulated sunlight irradiation in 120 min and that was only 33.5% for In2TiO5 nanobelt. Moreover, the degradation rate of RhB maintained above 95% after 5 times recycles.
