Preparation, Adsorption-Degradation Properties of Cu2O-CuO/TiO2 Composite Chitosan/Maleic Anhydride/Divinylbenzene Porous Materials
LIU Xiaolin1,2, ZHANG Yong3, ZHANG Lin1,2, LUO Xuan1
1 Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621000, Sichuan, China 2 Department of Physics, University of Science and Technology of China, Hefei 230000, China 3 Sichuan Co-Innovation Center for New Energetic Materials, Mianyang 621010, Sichuan, China
Abstract: In the ternary system of chitosan/maleic anhydride/divinylbenzene, Cu2O-CuO/TiO2 nanoparticles were introduced to prepare Cu2O-CuO/TiO2 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/H2O2 were studied. These experiments revealed that Cu2O-CuO/TiO2 nanoparticles reacted with the amino groups of chitosan in the ternary system to prepare the porous organic polymer. When the mass of Cu2O-CuO/TiO2 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 H2O2 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 H2O2.
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2022, Vol. 36 
