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Microstructure‐Controllable Graphene Oxide Hydrogel Film Based on a pH‐Responsive Graphene Oxide Hydrogel
Author(s) -
Qin SiYong,
Liu XiangJi,
Zhuo RenXi,
Zhang XianZheng
Publication year - 2012
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201200281
Subject(s) - graphene , oxide , microstructure , materials science , chemical engineering , rhodamine b , adsorption , self healing hydrogels , nanotechnology , membrane , polymer chemistry , chemistry , composite material , organic chemistry , metallurgy , photocatalysis , catalysis , biochemistry , engineering
A graphene oxide hydrogel (GOH) is fabricated via suspending the graphene oxide (GO) in water without any additional processing steps. At the hydrogel/air interface, a well‐defined hydrogel membrane forms once the solvent is removed by vacuum drying. The microstructure of the resulting GOH film can be tailored by different dehydration approaches, as well as by varying the GO concentration in the hydrogel. This GOH exhibited pH‐responsiveness and good mechanical properties. Meanwhile, the GOH presented good adsorption capacity to the organic dye rhodamine B and anionic chromate Cr 2 O 7 2− . This GOH may find great potential in many fields, such as wastewater treatment, biodetection, etc.