Key Laboratory of Metallurgical Emission Reduction & Resources Recycling, Anhui University of Technology, Ministry of Education, Maanshan, Anhui 243002, China; School of Metallurgical Engineering, Anhui University of Technology, Maanshan, Anhui 243032, China.
Key Laboratory of Metallurgical Emission Reduction & Resources Recycling, Anhui University of Technology, Ministry of Education, Maanshan, Anhui 243002, China.
Int J Biol Macromol. 2024 Apr;263(Pt 2):130082. doi: 10.1016/j.ijbiomac.2024.130082. Epub 2024 Feb 29.
The surge in economic growth has spurred the expansion of the textile industry, resulting in a continuous rise in the discharge of printing and dyeing wastewater. In contrast, the photocatalytic method harnesses light energy to degrade pollutants, boasting low energy consumption and high efficiency. Nevertheless, traditional photocatalysts suffer from limited light responsiveness, inadequate adsorption capabilities, susceptibility to agglomeration, and hydrophilicity, thereby curtailing their practical utility. Consequently, integrating appropriate carriers with traditional photocatalysts becomes imperative. The combination of chitosan and semiconductor materials stands out by reducing band gap energy, augmenting reactive sites, mitigating carrier recombination, bolstering structural stability, and notably advancing the photocatalytic degradation of printing and dyeing wastewater. This study embarks on an exploration by initially elucidating the technical principles, merits, and demerits of prevailing printing and dyeing wastewater treatment methodologies, with a focal emphasis on the photocatalytic approach. It delineates the constraints encountered by traditional photocatalysts in practical scenarios. Subsequently, it comprehensively encapsulates the research advancements and elucidates the reaction mechanisms underlying chitosan based composite materials employed in treating printing and dyeing wastewater. Finally, this work casts a forward-looking perspective on the future research trajectory of chitosan based photocatalysts, particularly in the realm of industrial applications.
经济增长的激增刺激了纺织工业的扩张，导致印染废水排放量不断上升。相比之下，光催化方法利用光能降解污染物，具有能耗低、效率高的特点。然而，传统的光催化剂存在响应范围有限、吸附能力不足、易团聚、亲水性差等问题，限制了其实际应用。因此，将合适的载体与传统光催化剂结合变得至关重要。壳聚糖和半导体材料的结合通过降低带隙能、增加反应位点、抑制载流子复合、增强结构稳定性，显著提高了印染废水的光催化降解性能。本研究首先阐述了现有的印染废水处理方法的技术原理、优缺点，重点介绍了光催化方法，探讨了传统光催化剂在实际应用中遇到的限制。然后，全面总结了壳聚糖基复合材料在处理印染废水中的研究进展，并阐明了其反应机制。最后，对壳聚糖基光催化剂的未来研究方向，特别是在工业应用领域，进行了展望。
