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Cited by 787

The DOI matches its Crossref record; 55 of the 55 references it cites were found in a registry or an index.

Cross-Linking with Diamine Monomers To Prepare Composite Graphene Oxide-Framework Membranes with Varying d-Spacing

Hung, Wei-Song, Tsou, Chi-Hui, De Guzman, Manuel, An, Quan-Fu, Liu, Ying-Ling, Zhang, Ya-Ming, Hu, Chien-Chieh, Lee, Kueir-Rarn, Lai, Juin-Yih·2014·Chemistry of Materials

Abstract

Three diamine monomers (ethylenediamine, butylenediamine, and p -phenylenediamine) were selected for cross-linking graphene oxide (GO) to prepare composite graphene oxide-framework (GOF) membranes through filtration using a pressure-assisted self-assembly technique. The membranes were applied to separate an ethanol–water mixture by pervaporation. Unmodified GO comprised only hydrogen bonds and π–π interactions, but after cross-linking it with a diamine, attenuated total reflectance–Fourier transform infrared and X-ray photoelectron spectroscopy demonstrated that the diamine was chemically bonded both to GO and the membrane support. Moreover, GO hydrophilicity was substantially altered; water contact angle increased from 24.4° to 80.6° (from cross-linking with an aliphatic structure of diamine to cross-linking with an aromatic structure). Results of X-ray diffraction showed that d -spacing in GOF layers varied from 10.4 to 8.7 Å. For GOFs presoaked in 90 wt % ethanol–water, covalent bonds between the layer and diamine could effectively suppress stretching of d -spacing. Cross-linking with ethylenediamine produced a composite membrane that exhibited a short interlayer d -spacing and delivered an excellent pervaporation performance at 80 °C: permeation flux = 2297 g/(m 2 h); water concentration in permeate = 99.8 wt %. The membrane showed stability during a long-term operation at 30 °C for 120 h.

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Metadata

Authors
Hung, W.-S., Tsou, C.-H., De Guzman, M., An, Q.-F., Liu, Y.-L., Zhang, Y.-M., Hu, C.-C., Lee, K.-R., & Lai, J.-Y.
Venue
Chemistry of Materials
Published
2014-04-25
Volume
26
Issue
9
Pages
2983-2990
ISSN
  • 0897-4756 (ISSN-L)
  • 1520-5002
OpenAlex
W2312932795
Cited by
787
References
55
FWCI
50.26
Type
journal article
Language
en
Open access
closed

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