促进3D石墨烯水凝胶（rGH）的制备，用于增强重金属Cr（VI）的去除

IF 1 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Digest Journal of Nanomaterials and Biostructures Pub Date : 2023-04-01 DOI:10.15251/djnb.2023.182.463

Y. Li, X. Y. Zhao, X. Guo, J. Wang, W. Chen

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引用次数: 0

摘要

采用化学还原法制备了还原石墨烯水凝胶(rGH)，研究了其对静态水中重金属Cr (VI)的去除性能。rGH具有三维结构和窄孔径分布，对Cr (VI)的吸附过程符合Langmuir等温线模型，最大吸附容量为139.6 mg·g-1，显著的吸附容量主要归因于rGH具有纳米片状结构，保持了石墨烯的表面吸附特性，吸附速度快。π-π作用会减少水的竞争吸附，增加吸附容量。

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Facile fabrication of 3D graphene hydrogel (rGH) for enhanced removal of heavy metal Cr (VI)

The reduced graphene hydrogel (rGH) was prepared by chemical reduction method, and removal performance of heavy metal Cr (VI) in static water was studied. The rGH has a three-dimensional structure and narrow pore size distribution, that the adsorption process of Cr (VI) by rGH is in accordance with Langmuir isotherm model, and the maximum adsorption capacity is 139.6 mg·g-1 .The significant adsorption capacity is mainly attributed to the fact that rGH has nano-sheet structure, and maintains the surface adsorption characteristics of graphene with rapid adsorption. The π-π action will reduce the competitive adsorption of water and increase the adsorption capacity.

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