Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 6, Issue 1, Pages 1279-1288Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.7b03635
Keywords
Sandwiched nanostructures; Graphene oxide; Layer-by-layer assembly; Dyes removal; Wastewater treatment
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Funding
- National Natural Science Foundation of China [21473153, 51503178]
- Support Program for the Top Young Talents of Hebei Province
- China Postdoctoral Science Foundation [2015M580214]
- Scientific and Technological Research and Development Program of Qinhuangdao City [201701B004]
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Two-dimensional (2D) carbon nanomaterials generally display some limitations in adsorption applications due to easy agglomeration. To solve this problem, as-synthesized sandwiched nanocomposites made of Fe3O4 nanoparticles, poly(allylamine) hydrochloride molecules, and carboxylate graphene oxide sheets were prepared using a layer-by-layer (LbL) self-assembly method. The successfully synthesized sandwiched structures in the present nanocomposites have outstanding organic dye adsorption performance, stability, and recycling. The agglomeration of carboxylate graphene oxide was reduced with increased specific surface area because the Fe3O4 nanoparticles play important roles in interpenetrating and supporting graphene oxide sheets layers. In comparison with other kinds of composite adsorbents, the preparation process of the present new sandwiched composite materials is facile to operate and regulate, which demonstrates potential large-scale applications in wastewater treatment and dye removal.
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