Cu_(2)O-CuO/TiO_(2)复合壳聚糖/马来酸酐/二乙烯基苯的制备及吸附-降解染料性能研究  

Preparation,Adsorption-Degradation Properties of Cu_(2)O-CuO/TiO_(2) Composite Chitosan/Maleic Anhydride/Divinylbenzene Porous Materials

作　　者：刘小林 张勇[3] 张林 罗炫[1] LIU Xiaolin;ZHANG Yong;ZHANG Lin;LUO Xuan(Research Center of Laser Fusion,China Academy of Engineering Physics,Mianyang 621000,Sichuan,China;Department of Physics,University of Science and Technology of China,Hefei 230000,China;Sichuan Co-Innovation Center for New Energetic Materials,Mianyang 621010,Sichuan,China)

机构地区：[1]中国工程物理研究院激光聚变研究中心,四川绵阳621000 [2]中国科学技术大学物理系,合肥230000 [3]四川省新型含能材料军民融合协同创新中心,四川绵阳621010

出　　处：《材料导报》2022年第1期186-191,共6页Materials Reports

基　　金：中物院超精密加工技术重点实验室资助项目(ZD18001)。

摘　　要：在壳聚糖/马来酸酐/二乙烯基苯的三元体系中,引入Cu_(2)O-CuO/TiO_(2)纳米粒子,制备了Cu_(2)O-CuO/TiO_(2)复合壳聚糖/马来酸酐/二乙烯基苯多孔有机聚合物(CMD-Ti/Cu),对其结构和化学成分进行了表征,并用亚甲基蓝(MB)溶液模拟污染物,研究了CMD-Ti/Cu/H_(2)O_(2)体系对亚甲基蓝的吸附-降解性能。结果表明,Cu_(2)O-CuO/TiO_(2)纳米粒子与三元体系中壳聚糖的氨基发生螯合反应,由此可以制备纳米粒子复合的多孔有机聚合物。当Cu_(2)O-CuO/TiO_(2)纳米粒子质量分数为壳聚糖的50%(CMD-Ti/Cu-3)时,复合三元体系聚合物的吸附降解性能最好。此外,在25℃、H_(2)O_(2)浓度为0.15 mol·L^(-1)、CMD-Ti/Cu-3用量为1.0 g·L^(-1)、亚甲基蓝浓度为50 mg·L^(-1)时,对亚甲基蓝的去除率达到98.8%。CMD-Ti/Cu-3在五次循环实验后,去除率保持在95%以上。同时,通过活性组分捕获实验证明了降解染料的活性自由基主要来自复合三元体系聚合物催化H_(2)O_(2)产生的羟基自由基。In the ternary system of chitosan/maleic anhydride/divinylbenzene,Cu_(2)O-CuO/TiO_(2)nanoparticles were introduced to prepare Cu_(2)O-CuO/TiO_(2)composite chitosan/maleic anhydride/divinylbenzene porous organic polymer(CMD-Ti/Cu).The structural characterization and chemical composition of CMD-Ti/Cu polymers were characterized.The adsorption and degradation properties of methylene blue in the system of CMD-Ti/Cu/H_(2)O_(2)were studied.These experiments revealed that Cu_(2)O-CuO/TiO_(2)nanoparticles reacted with the amino groups of chitosan in the ternary system to prepare the porous organic polymer.When the mass of Cu_(2)O-CuO/TiO_(2)nanoparticles was 50%of chitosan(CMD-Ti/Cu-3),the adsorption-degradation properties of the composite ternary system were the best.Besides,the removel rate of MB for CMD-Ti/Cu-3 was 98.8%under optimum conditions(i.e.,25℃,dosage of H_(2)O_(2)0.15 mol·L^(-1),dosage of catalyst 1.0 g·L^(-1) and initial concentration of MB 50.0 mg·L^(-1)).After five cycles,the removal rate of CMD-Ti/Cu-3 remained above 95%.Bestdes,the active component capture experiments showed that the active radicals of dye degradation mainly came from the hydroxyl radicals produced by H_(2)O_(2).

关 键 词：吸附 降解 染料 Cu_(2)O-CuO/TiO_(2) 

分 类 号：X703[环境科学与工程—环境工程]