摘要
为解决粉体光催化剂在降解纺织印染废水过程中易团聚、难以回收利用的问题,采用溶剂热法制备芳纶固载BiOBr(BiOBr/AF)复合材料,对材料的微观形貌和结构进行表征与分析,研究了BiOBr/AF在可见光照射下对模拟染色废水的光催化深度降解性能。结果表明:以乙二醇为溶剂,柠檬酸为螯合剂,芳纶为固载基体,于160℃下反应12 h,形貌规整的厚片状BiOBr均匀生长于AF载体表面;BiOBr/AF可实现对直接湖蓝5B、弱酸性艳蓝A和活性嫩黄K-4S染料模拟染色废水的深度降解,降解率均高于98%,且具有良好的循环使用稳定性,化学需氧量(COD)和生化需氧量(BOD)降解率均高于70%,深度降解后的COD、BOD值能满足纺织染整工业水污染物排放限值要求。
Aramid fiber(AF)supported BiOBr composite materials(BiOBr/AF)were prepared by the solvothermal method to solve the easy agglomeration and difficult recycling during degrading textile printing and dyeing wastewater by powder photocatalyst.The morphology and microstructure of the BiOBr/AF were characterized and analyzed,and the deep photocatalytic degradation performance of simulated dyeing wastewater by BiOBr/AF under visible light irradiation was also studied.The results show that the thick sheets of BiOBr with regular morphology are uniformly grown on the surface of AF by using ethylene glycol as solvent,citric acid as chelating agent and AF as supporting matrix at 160℃for 12 h.BiOBr/AF has good deep degradation performance to the simulated dyeing wastewater of Direct Lake Blue 5B,Weak Acid Brilliant Blue A and Reactive Light Yellow K-4S.The degradation rates to all target dyes are more than 98%.In addition,BiOBr/AF presents good recycling stability.The chemical oxygen demand and biochemical oxygen demand degradation efficiency are higher than 70%,which meets the requirements for the emission limits of textile dyeing and finishing industrial water pollutants.
作者
张雨晗
申国栋
樊威
孙润军
ZHANG Yuhan;SHEN Guodong;FAN Wei;SUN Runjun(School of Textile Science and Engineering, Xi′an Polytechnic University, Xi′an, Shaanxi 710048, China;School of Materials Science & Engineering, Shaanxi University of Science & Technology, Xi′an, Shaanxi 710021, China;State Key Laboratory of Intelligent Textile Material and Products, Xi′an Polytechnic University, Xi′an, Shaanxi 710048, China)
出处
《纺织学报》
EI
CAS
CSCD
北大核心
2021年第8期128-134,共7页
Journal of Textile Research
基金
国家自然科学基金面上项目(52073224)
陕西省自然科学基础研究计划资助项目(2021JQ-681)
陕西省教育厅专项科研计划项目(18JK0335)
中国纺织工业联合会科技指导性项目(2020002)。
关键词
芳纶
光催化降解
溶剂热法
染色废水处理
aramid fiber
photocatalytic degradation
solvothermal method
dyeing wastewater treatment
作者简介
第一作者:张雨晗(1997—),女,硕士生,主要研究方向为纳米光催化材料的合成、改性及光催化机制;通信作者:申国栋(1986—),男,讲师,博士,主要研究方向为新型铁电光催化材料的设计与研发及光催化机制、柔性智能纤维及纺织品的设计与研发,E-mail:shenguodong@xpu.edu.cn。
