PMID- 36658953 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230120 IS - 2095-9281 (Electronic) IS - 2095-9273 (Linking) VI - 63 IP - 12 DP - 2018 Jun 30 TI - Controlling reduction degree of graphene oxide membranes for improved water permeance. PG - 788-794 LID - S2095-9273(18)30236-6 [pii] LID - 10.1016/j.scib.2018.05.015 [doi] AB - Tailoring the pore structure and surface chemistry of graphene-based laminates is essentially important for their applications as separation membranes. Usually, pure graphene oxide (GO) and completely reduced GO (rGO) membranes suffer from low water permeance because of the lack of pristine graphitic sp(2) domains and very small interlayer spacing, respectively. In this work, we studied the influence of reduction degree on the structure and separation performance of rGO membranes. It was found that weak reduction retains the good dispersion and hydrophilicity of GO nanosheets. More importantly, it increases the number of pristine graphitic sp(2) domains in rGO nanosheets while keeping the large interlayer spacing of the GO membranes in most regions at the same time. The resultant membranes show a high water permeance of 56.3 L m(-2) h(-1) bar(-1), which is about 4 times and over 10(4) times larger than those of the GO and completely reduced rGO membranes, respectively, and high rejection over 95% for various dyes. Furthermore, they show better structure stability and more superior separation performance than GO membranes in acid and alkali environments. CI - Copyright (c) 2018 Science China Press. Published by Elsevier B.V. All rights reserved. FAU - Zhang, Qing AU - Zhang Q AD - Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China; School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, China. FAU - Qian, Xitang AU - Qian X AD - Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China; School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, China. FAU - Thebo, Khalid Hussain AU - Thebo KH AD - Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China; University of Chinese Academy of Sciences, Beijing 100049, China. FAU - Cheng, Hui-Ming AU - Cheng HM AD - Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China; School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, China; Tsinghua-Berkeley Shenzhen Institute (TBSI), Tsinghua University, Shenzhen 518055, China. FAU - Ren, Wencai AU - Ren W AD - Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China; School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, China. Electronic address: wcren@imr.ac.cn. LA - eng PT - Journal Article DEP - 20180525 PL - Netherlands TA - Sci Bull (Beijing) JT - Science bulletin JID - 101655530 SB - IM OTO - NOTNLM OT - Graphene oxide OT - Reduction OT - Separation membrane OT - Water permeance EDAT- 2018/06/30 00:00 MHDA- 2018/06/30 00:01 CRDT- 2023/01/20 01:06 PHST- 2018/04/23 00:00 [received] PHST- 2018/04/29 00:00 [revised] PHST- 2018/04/30 00:00 [accepted] PHST- 2023/01/20 01:06 [entrez] PHST- 2018/06/30 00:00 [pubmed] PHST- 2018/06/30 00:01 [medline] AID - S2095-9273(18)30236-6 [pii] AID - 10.1016/j.scib.2018.05.015 [doi] PST - ppublish SO - Sci Bull (Beijing). 2018 Jun 30;63(12):788-794. doi: 10.1016/j.scib.2018.05.015. Epub 2018 May 25.