UiO-66@GO复合材料制备及其光催化性能  

Preparation of UiO-66@GO and study on its photocatalytic properties

作　　者：王震 丁颖[1] 汪易平 徐丽慧[1] 潘虹 WANG Zhen;DING Ying;WANG Yiping;XU Lihui;PAN Hong(School of Textiles and Fashion,Shanghai University of Engineering Science,Shanghai 201620,China)

机构地区：[1]上海工程技术大学纺织服装学院,上海201620

出　　处：《现代纺织技术》2024年第10期68-77,共10页Advanced Textile Technology

基　　金：国家自然科学基金项目(51703123)。

摘　　要：为探究UiO-66的制备及应用,以四氯化锆为金属中心,采用水热法制备出UiO-66,并针对UiO-66的分散性较差、光生电子空穴对易复合等问题,以氧化石墨烯(GO)作为碳基材料对UiO-66进行复合修饰,通过后合成法成功制备出UiO-66@GO复合材料。通过FTIR、XRD、SEM、XPS、BET等对UiO-66@GO复合材料的结构进行表征,并以亚甲基蓝为底物,研究了pH值和质量比等因素对UiO-66@GO复合材料光催化性能的影响。结果表明:当pH为3、GO与UiO-66的质量比为1∶5时,制备出的UiO-66@GO复合材料对MB的光催化降解效率达到了96.4%,比单一UiO-66材料的光催化降解效率提高了1.1倍。以上结果可为UiO-66在处理印染废水方面的应用提供一定的理论参考。As the printing and dyeing industry grows by leaps and bounds a large amount of industrial wastewater is produced making the dyestuff in it one of the major water pollutants.However dyestuff is not easy to break down into harmless substances by natural forces in water due to its stable chemical properties.By absorbing and reflecting sunlight it hinders the growth and reproduction of microorganisms in water bodies and weaken their abilities to degrade pollutants which makes it one of the largest sources of pollution that damages the natural water environment.Azo dyes are the most widely used dyes in the textile industry which can decompose and produce a variety of carcinogens in the environment.They will not only significantly increase the color of the water but also upset the balance of the water ecosystem and change the DNA structure of the human body to cause lesions.At present the commonly used methods for treating azo dyes include precipitation adsorption membrane separation photochemical and biological treatment.However these methods are difficult to completely destroy the structure of azo dyes and convert them into organic compounds that are less toxic or can be degraded by microorganisms.Therefore it has been a hot research topic to develop a low-cost method with certain market economic benefits to remove the dyestuff from printing and dyeing wastewater.In recent years photocatalytic degradation as a low-cost simple-to-operate and highly reusable technology has arouse wide concern both domestically and internationally.It has also become a focused area in wastewater treatment.Photocatalytic degradation technology can convert solar energy into chemical energy and it is a new technology to reduce environmental pollution and ease energy shortage.This paper uses metal-organic frameworks MOF as photocatalysts.UiO-66 is a type of MOF with good thermal stability excellent chemical stability and resistance to high external pressure.These properties ensure it with many potential applications in wastewater treatment.

关 键 词：金属-有机骨架(MOF) UiO-66 复合材料 光催化降解 亚甲基蓝 

分 类 号：TQ152[化学工程—电化学工业] TM53[电气工程—电器]