Bian Xuesen, Chen Jianqiu, Ji Rong
State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China.
Nanjing Institute of Environmental Sciences of the Ministry of Environmental Protection of PR China, Nanjing 210042, China.
Materials (Basel). 2013 Apr 15;6(4):1530-1542. doi: 10.3390/ma6041530.
The novel complex photocatalytic material was prepared by coating TiO₂ nanoparticles on tourmaline using the sol-gel method, and used in the degradation of the herbicide 2,4-D. The results indicated that coating TiO₂ with tourmaline enhanced the photocatalytic activity significantly. Based on the research of a simplified model for the average light intensity in the photoreactor, the influence of the concentration of photocatalyst, and the initial concentration of 2,4-D, a model for the degradation of 2,4-D by the tourmaline-coated TiO₂ nanoparticles was established. Further tests showed that results calculated from this model were close to those obtained in the actual experiments.
采用溶胶-凝胶法将TiO₂纳米颗粒包覆在电气石上制备了新型复合光催化材料，并将其用于除草剂2,4-D的降解。结果表明，电气石包覆TiO₂显著提高了光催化活性。基于对光反应器中平均光强简化模型、光催化剂浓度以及2,4-D初始浓度的研究，建立了电气石包覆TiO₂纳米颗粒降解2,4-D的模型。进一步测试表明，该模型计算结果与实际实验结果相近。
