Key Laboratory of Chemical Additives for China National Light Industry, Shaanxi University of Science and Technology, 710021 Xi'an, China.
Key Laboratory of Chemical Additives for China National Light Industry, Shaanxi University of Science and Technology, 710021 Xi'an, China.
Int J Biol Macromol. 2024 Feb;259(Pt 2):129405. doi: 10.1016/j.ijbiomac.2024.129405. Epub 2024 Jan 12.
Titanium dioxide-based materials treat wastewater contaminated by organic pollutants. However, the wide band gap and the ease of agglomeration limit its photocatalytic activity. PDA/PEI@TiO@P-HSM composites were synthesized using PDA/PEI as an interfacial bonding modifier via polymerization reaction. Phase and chemical bonding analysis confirmed the modifiedTiO coated P-HSM, which can effectively reduce the band gap and control the agglomeration of titanium dioxide, i.e., suitable to degrade RhB. Under UV irradiation, PDA/PEI @TiO@P-HSM can remove RhB up to 90 % in 100 min. The photocatalytic degradation process conforms to the Langmuir-Hinshelwood quasi-primary equation. The composite exhibited excellent stability and recycling i.e., a high removal effect, with a removal rate of up to 60 % after seven cycles of reaction.
基于二氧化钛的材料可处理被有机污染物污染的废水。然而，其较宽的带隙和易于团聚限制了其光催化活性。通过聚合反应，以 PDA/PEI 作为界面结合改性剂合成了 PDA/PEI@TiO@P-HSM 复合材料。物相和化学键分析证实了经修饰的 TiO 包覆 P-HSM，可有效降低带隙并控制二氧化钛的团聚，即适合降解 RhB。在紫外光照射下，PDA/PEI@TiO@P-HSM 可在 100 分钟内将 RhB 去除高达 90%。光催化降解过程符合 Langmuir-Hinshelwood 准一级方程。该复合材料表现出优异的稳定性和可循环性，即去除效果高，在反应进行七次循环后，去除率仍高达 60%。
