光敏剂敏化Cu-有机骨架对活性深蓝K-R的高效光催化降解  

Photosensitizers sensitized Cu-organic framework for highly efficient photocatalytic degradation of Reactive Dark Blue K-R

作　　者：李庆[1] 管斌斌 王雅 刘天卉 张洛红[1] 樊增禄[2] LI Qing;GUAN Binbin;WANG Ya;LIU Tianhui;ZHANG Luohong;FAN Zenglu(College of Environmental & Chemical Engineering, Xi′an Polytechnic University, Xi′an, Shaanxi 710048, China;Key Laboratory of Functional Textile Materials and Products, Ministry of Education, Xi′an Polytechnic University, Xi′an, Shaanxi 710048, China)

机构地区：[1]西安工程大学环境与化学工程学院,陕西西安710048 [2]西安工程大学功能性纺织材料及制品教育部重点实验室,陕西西安710048

出　　处：《纺织学报》2020年第10期87-93,共7页Journal of Textile Research

基　　金：国家级大学生创新训练计划项目(201910709016);陕西省重点研发计划项目(2020GY-276);陕西省科技计划项目(2019GY-163);陕西省教育厅服务地方专项计划项目(19JC016);西安市科技计划项目(2019217114GXRC007CG008-GXYD7.1);西安工程大学研究生创新基金项目(chx2020023)。

摘　　要：针对活性染料废水引起的水污染,采用硝酸铜与4,4′,4″-[1,3,5-苯基三(酰胺基)]三苯甲酸(H3L)反应,制备了三维多孔的Cu-有机骨架(Cu-MOF)材料,对染料进行光催化降解。研究了Cu-MOF的热学性能,通过粉末X射线衍射分析确认了其结构特征。通过可见光吸收能力不同的甲基橙(MO)和亚甲基蓝(MB)对Cu-MOF进行敏化,制备了2种复合材料以提升光催化降解效能。研究表明:Cu-MOF及MO-Cu-MOF和MB-Cu-MOF(10 mg)对40 mL的34.02 mg/L的活性深蓝K-R的可见光催化降解效率分别为42.4%、76.2%和88.4%,光催化速率常数分别为0.029、0.082、0.122 h-1,最佳pH值为8;5次光催化循环之后,MB-Cu-MOF对治性深蓝K-R的降解效率仍高达75.1%。Three-dimensional porous Cu-organic skeleton material(Cu-MOF)was synthesized from the reaction of copper nitrate and 4,4′,4″-[1,3,5-benzenetriyltris(carbonylimino)]trisbenzoic acid(H3L)to address the challenge of water pollution caused by reactive dyes containing wastewater by virtue of photocatalytic degradation.The thermal weight loss properties of the Cu-MOF were studied by thermal weight loss analysis and the powder X-ray diffraction analysis to confirm its structural characteristics.Then,the Cu-MOF was sensitized by methyl orange(MO)and methylene blue(MB)with different visible light absorption capacity,providing two kinds of composites to improve the photocatalytic degradation efficiency.The studies reveal that Cu-MOF and its composites MO-Cu-MOF and MB-Cu-MOF(10 mg)performs the visible photocatalytic degradation efficiency of 42.4%,76.2%and 88.4%,with corresponding photocatalytic rate constants of 0.029 h-1,0.082 h-1 and 0.122 h-1,respectively,towards Reactive Dark Blue K-R(RB13)and the optimal pH value is 8.After five cycles of photocatalytic degradation,the degradation efficiency of MB-Cu-MOF towards RB13 still reaches 75.1%.

关 键 词：Cu-有机骨架 光敏剂 可见光催化降解 活性染料 印染废水 

分 类 号：TS190.2[轻工技术与工程—纺织化学与染整工程]