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Issue 6, 2011
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Graphene-templated formation of two-dimensional lepidocrocite nanostructures for high-efficiency catalytic degradation of phenols

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Abstract

Graphene is a two-dimensional nanomaterial with exceptionally interesting physical and chemical properties, which has been actively explored in nanoelectronics, nanodevices and nanoscale catalysis. Here we report a graphene-templated route toward mild, solution-phase synthesis of ultrathin single crystal lepidocrocite (γ-FeOOH) nanosheets with high aspect ratio. We find that when reduced graphene oxide (rGO) was incubated with FeCl3 of 20 wt% at 80 °C and in the presence of reducing reagents (e.g.hydrazine hydrate), close-spaced 2D nanosheets of γ-FeOOH was formed on the surface of rGO, with the average thickness of 2.1 nm. This ultrathin nanomaterial was characterized via a range of complementary techniques, transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), Mössbauer spectroscopy and synchrotron-based scanning transmission X-ray microscopy (STXM), which confirmed the formation of γ-FeOOH 2D nanosheets. Importantly, we explore the application of this novel nanomaterial as an efficient and stable catalyst for phenol treatment in wastewater.

Graphical abstract: Graphene-templated formation of two-dimensional lepidocrocite nanostructures for high-efficiency catalytic degradation of phenols

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Publication details

The article was received on 28 Sep 2010, accepted on 25 Mar 2011 and first published on 15 Apr 2011


Article type: Communication
DOI: 10.1039/C0EE00495B
Citation: Energy Environ. Sci., 2011,4, 2035-2040
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    Graphene-templated formation of two-dimensional lepidocrocite nanostructures for high-efficiency catalytic degradation of phenols

    C. Peng, B. Jiang, Q. Liu, Z. Guo, Z. Xu, Q. Huang, H. Xu, R. Tai and C. Fan, Energy Environ. Sci., 2011, 4, 2035
    DOI: 10.1039/C0EE00495B

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