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Published on: February 13, 2016
Removal of Antibiotics From Water with an All-Carbon 3D Nanofiltration Membrane
Guo-Hai Yang1, Dan-Dan Bao2, Da-Qing Zhang2
1School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, 221116, China. yangguohai@jsnu.edu.cn.
Abstract:
Recent industrial developments and increased energy demand have resulted in significantly increased levels of environmental pollutants, which have become a serious global problem. Herein, we propose a novel all-carbon nanofiltration (NF) membrane that consists of multi-walled carbon nanotubes (MWCNTs) interposed between graphene oxide (GO) nanosheets to form a three-dimensional (3D) structure. The as-prepared membrane has abundant two-dimensional (2D) nanochannels that can physically sieve antibiotic molecules through electrostatic interaction. As a result, the prepared membrane, with a thickness of 4.26 μm, shows both a high adsorption of 99.23% for tetracycline hydrochloride (TCH) and a high water permeation of 16.12 L m- 2 h- 1 bar- 1. In addition, the cationic dye methylene blue (MB) was also removed to an extent of 83.88%, indicating broad applications of the prepared membrane.
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