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Nanosheet-templated graphene oxide membranes for fast molecule separation
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  • Zhen Lin,
  • Chuan Hu,
  • Qing Lin Liu,
  • Qiugen Zhang
Zhen Lin
Xiamen University

Corresponding Author:[email protected]

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Chuan Hu
Xiamen University
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Qing Lin Liu
Xiamen University
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Qiugen Zhang
Xiamen University
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Intercalated laminar membrane with controllable interlayer spacing (d-spacing) is one of the most effective membranes for fast molecule separation. In this work, we demonstrate a versatile strategy to create nanosheet-templated water channels in laminar graphene oxide (GO) membranes. The 1.2 nm-thick nickel hydroxide nanosheets as sacrificed intercalators provide a chance to control the d-spacing and simultaneously retain hydrophilicity. The resultant membranes have controllable channels and exhibit over 6 times higher water permeance than the unintercalated membrane. The 880 nm-thick nanosheet-templated GO (NST-GO) membrane has accurate d-spacing of about 1.14 nm and shows high water permeance of 120.3 L m−2 h−1 bar−1 and good molecule separation property, reflecting in high rejection for larger dyes (90.1% for erythrosine b (EB)), while low rejection for smaller dyes (58.3% for methylene blue (MB)). Furthermore, this strategy of intercalating and sacrificing nanosheets has higher potential than traditional intercalation in controlling d-spacing of laminar membranes.
28 Feb 2022Submitted to AIChE Journal
02 Mar 2022Submission Checks Completed
02 Mar 2022Assigned to Editor
05 Mar 2022Reviewer(s) Assigned
31 Mar 2022Editorial Decision: Revise Major
05 May 20221st Revision Received
11 May 2022Assigned to Editor
11 May 2022Submission Checks Completed
16 May 2022Reviewer(s) Assigned
09 Jun 2022Editorial Decision: Revise Minor
12 Jun 20222nd Revision Received
12 Jun 2022Submission Checks Completed
12 Jun 2022Assigned to Editor
14 Jun 2022Reviewer(s) Assigned
20 Jun 2022Editorial Decision: Accept
Nov 2022Published in AIChE Journal volume 68 issue 11. 10.1002/aic.17818