Hierarchical Reduced Graphene Oxide-MnO_(2)@Polypyrrole Coaxial Nanotube Composite Hydrogel as a Potential Adsorbent for Cr(Ⅵ)Removal  

作　　者：LIU Ben XU Yaowei TONG Yuxing WANG Ziwei LIU Zhichang YAN Qunshan JI Jiayou GAO Song LI Shaoping 刘奔;季家友;高颂

机构地区：[1]China Tobacco Hubei Industrial Co.,Ltd,Wuhan 430040,China [2]Hubei Xinye Reconstituted Tobacco Development Co.,Ltd.,Wuhan 430056,China [3]Applied Technology Research of Reconstituted Tobacco Hubei Province Key Laboratory,Wuhan 430040,China [4]School of Materials Science and Engineering,Wuhan Institute of Technology,Wuhan 430205,China [5]Hubei Three Gorges Laboratory,Yichang 443008,China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2024年第5期1287-1293,共7页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the Open/Innovation Fund of Hubei Three Gorges Laboratory(No.SK212002)。

摘　　要：A hierarchical reduced graphene oxide-MnO_(2)@polypyrrole coaxial nanotube composite hydrogel was prepared via oxidative polymerization of pyrrole in the presence of MnO_(2)nanotubes,followed by the hydrothermal treatment of graphene oxide and MnO_(2)@polypyrrole coaxial nanotubes.The stable composite hydrogel with a hierarchical network was composed of one-dimensional MnO_(2)@polypyrrole coaxial nanotube and two-dimensional graphene nanosheet and characterized by scanning electron microscope,Fourier transform infrared spectroscopy,X-ray diffraction,Brunauer-Emmett-Teller surface,and X-ray photoelectron spectroscopy measurements.The composite hydrogel can be used as an efficient adsorbent for Cr(Ⅵ)removal due to the synergistic interaction between graphene and MnO_(2)@polypyrrole and the hierarchical structure of the hydrogel.Moreover,the composite hydrogel is easily separated because of its stable monolith,and it is reusable(76.8%of removal ability remaining after five adsorption-desorption cycles).The simple fabrication and cost-effective separation process together with the excellent absorption performance endow the composite hydrogel with great potential for practical wastewater treatment.

关 键 词：HYDROGEL POLYPYRROLE MnO_(2) graphene Cr(Ⅵ)removal 

分 类 号：TQ424[化学工程]