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《Acta Materiae Compositae Sinica》 2018-06
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Functionalized chitosan modified hollow mesoporous SiO_2

XU Guangpeng;XIAO Yao;LI Miaomiao;GONG Yumei;ZHANG Sen;GUO Jing;School of Textile and Material Engineering,Dalian Polytechnic University;Functional Fiber and its Composite Materials Engineering Technology Research Center of Liaoning Province;  
A composite nanoparticle hollow mesoporous SiO_2(HMSiO_2)@chitosan-graft-polyamidoxime(CTS-gPAO)was prepared via HMSiO_2 through sol-gel method used as CTS coating on HMSiO_2 by inverse microemulsion synthesis used as the matrix to graft polyacrylonitrile(PAN),which was transformed to PAO.The component and the structure of the HMSiO_2@CTS-g-PAO composite were examined by FTIR and XRD.The morphology and the size of the HMSiO_2@CTS-g-PAO were confirmed by SEM and Laser Particle Size Analyzer.The results show that the HMSiO_2@CTS-g-PAO is core-shell nanoparticle with the HMSiO_2 as the core and the CTS-g-PAO as the shell.K2 Cr2 O7 solution is used as the Cr target for detecting the adsorption capacity of the prepared HMSiO_2@CTS-gPAO.The results indicate that the adsorption capacity of Cr VI is 3.28 mmol/g when the pH of K2 Cr2 O7 solution is2 and the concentration of the solution is 91.4 mg/L.Furthermore,the adsorption process is consistent with the pseudo-second-order kinetics and mainly belongs to chemical adsorption.
【Fund】: 国家留学基金(20163035);; 辽宁省自然科学基金(2016102048);; 中国科学院长春应用化学研究所高分子化学与物理国家重点实验室开放课题基金(201513)
【CateGory Index】: TQ127.2;TQ424
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