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For the first time, we develop a high performance, cost-effective gas sensor by exploiting 3D chemically functionalized reduced graphene oxide hydrogel (FRGOH). The self-assembly and chemical modification of 3D FRGOH are realized using hydroquinone molecules in a simple, one-step hydrothermal synthesis process. Compared with an unmodified RGOH counterpart, the chemically derived FRGOH sensor not only...
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