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Construction and gas separation performance of MXene/rGO hollow fiber composite membranes

Authors： BAO Huanzhong, QIAO Junhao, WANG Qinsheng, WANG Yuming, CAO Guoqiang, YU Qinghua, LI Song, ZHANG Lianbao, JIN Yun

Units： 1. Zibo Megavision Membrane Environmental Protection Technology Co., LTD., Zibo 255400, China; 2. School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255049, China; 3. Shandong Meiling Zhonglian Environmental Engineering Co., Ltd., Zibo 255400, China

KeyWords： MXene/rGO; Membrane separation; Inter-spacing; Gas separation; Permeability

ClassificationCode：TQ028.2+1

year,volume(issue):pagination： 2023,43(5):118-126

Abstract：

MXene/rGO composite membranes were prepared through rGO modified by polyallyl dimethyl ammonium chloride (PDDA) inserted into the MXene nano-sheet with negative charge to inhibit the self-stacking of MXene. Scanning electron microscopy (SEM) was used to analyze the surface morphology of MXene/rGO composite membranes. X-ray diffraction (XRD) and X-ray diffraction photoelectron spectroscopy (XPS) were used to analyze the layer spacing, chemical crystal pattern and valence state of elements. The results show that MXene/rGO can achieve inter-spacing of 3.15 Å through intercalating regulation. Moreover, MXene/rGO composite hollow fiber membranes show excellent H2 permeability of 5.13×10-8 mol/(m2·s·Pa), H2/CO2 selectivity of 125 at 25 oC, and excellent stability over 200 h.

Funds：

国家自然科学基金（21878179）；山东省重大科技创新工程项目（2019JZZY020224）

AuthorIntro：

包焕忠（1970-），男，吉林省梅河口市人，高级工程师，学士，研究方向为分离膜的研发、应用和制备，E-mail：bhz@mayling.com.cn

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