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Tubular MXene/SS membranes for highly efficient H2/CO2 separation |
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| Authors: | Mide Luo Zong Lu Yali Zhao Yufei Wang Yanying Wei Haihui Wang |
| Affiliation: | 1. School of Chemistry & Chemical Engineering, Guangdong Provincial Key Lab of Green Chemical Product Technology, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, China Contribution: Data curation (lead), Formal analysis (lead), Investigation (supporting), Methodology (lead), Writing - original draft (lead);2. School of Chemistry & Chemical Engineering, Guangdong Provincial Key Lab of Green Chemical Product Technology, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, China Contribution: Investigation (supporting), Writing - original draft (supporting);3. School of Chemistry & Chemical Engineering, Guangdong Provincial Key Lab of Green Chemical Product Technology, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, China Contribution: Investigation (supporting), Methodology (supporting);4. School of Chemistry & Chemical Engineering, Guangdong Provincial Key Lab of Green Chemical Product Technology, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, China Contribution: Formal analysis (supporting), Investigation (supporting), Writing - original draft (supporting);5. School of Chemistry & Chemical Engineering, Guangdong Provincial Key Lab of Green Chemical Product Technology, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, China;6. Beijing Key Laboratory for Membrane Materials and Engineering, Department of Chemical Engineering, Tsinghua University, Beijing, China |
| Abstract: | Accurately constructing membranes based on two-dimensional (2D) materials on commercial porous substrates remains a significant challenge for H2 purification. In this work, a series of tubular 2D MXene membranes are prepared on commercial porous stainless steel substrates via fast electrophoretic deposition. Compared with other methods, such as filtration or drop coating, and so on. such preparation route shows the advantages of simple operation, high efficiency for membrane assembly (within 5 min) with attractive reproducibility, and ease for scale-up. The tubular MXene membranes present excellent gas separation performance with hydrogen permeance of 1290 GPU and H2/CO2 selectivity of 55. Furthermore, the membrane displays extremely stable performance during the long-term test for more than 1250 h, and about 93% of the membranes from one batch have exceeded the DOE target for CO2 capture. Most importantly, this work provides valuable referential significance for other 2D materials-based membranes for future application development. |
| Keywords: | gas separation inorganic membrane membrane separation MXene |