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Hai Li, Jumiati Wu, Xiaoying Qi, Qiyuan He, Cipto Liusman, Gang Lu, Xiaozhu Zhou and Hua Zhang Graphene Oxide Scrolls on Hydrophobic Substrates Fabricated by Molecular Combing and Their Application in Gas Sensing Small 9

Article first published online: 15 OCT 2012 | DOI: 10.1002/smll.201202358

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Well-aligned graphene oxide (GO) scrolls are prepared through the controlled folding/scrolling of single-layer GO sheets using molecular combing on hydrophobic substrates, such as aged gold substrate, polydimethylsiloxane film, poly(L-lactic acid) film, and octadecyltrimethoxysilane-modified silicon dioxide. As a proof of concept, the gas sensor fabricated with a single reduced GO scroll is used to detect NO2 gas with a concentration as low as 0.4 ppm.

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