Chitosan-Cross-Linked Graphene Oxide/Carboxymethyl Cellulose Aerogel Globules with High Structure Stability in Liquid and Extremely High Adsorption Ability

By Ting Huang, Yao-wen Shao, Qian Zhang, Yu-fan Deng, Zhiguang Liang, Fuyuan Guo, Peng-chao Li, Yong Wang. ACS Sustainable Chemistry and Engineering, 2019

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Graphene oxide (GO) exhibits excellent adsorption ability to remove organic dyes from liquid; therefore, fabricating GO-based adsorbents has attracted increasing interest from researchers. However, it is still challenging to prepare the GO-based adsorbents with high structure stability while simultaneously maintaining its high adsorption ability. In this work, a novel one-step fabrication method combining exfoliating and micro-cross-linking simultaneously was proposed to prepare the GO composite aerogel globules, in which GO was exfoliated by carboxymethyl cellulose (CMC) in the globule center, whereas the globule was micro-cross-linked by chitosan (CS) on the surface. The results showed that there were strong interactions between components, and the composite aerogel globule exhibited multiscale porous structures on the globule surface and the highly porous structure in the globule center. The composite aerogel exhibited high structure stability in liquid. The adsorption measurements toward methylene blu...

Subfields: Materials Chemistry, Spectroscopy, Water Science and Technology

View Paper: https://www.semanticscholar.org/paper/83e9c355a210cf7d0ddf5e1792052054e2eb5187