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  • Fast and cost-effective room temperature synthesis of high quality graphene oxide with excellent structural intactness

    Author(s)
    Qin, Jiadong
    Zhang, Yubai
    Batmunkh, Munkhbayar
    Shi, Ge
    Al-Mamun, Mohammad
    Liu, Porun
    Li, Wei
    Qi, Dong-Chen
    Zhao, Huijun
    Zhong, Yu Lin
    Griffith University Author(s)
    Liu, Porun
    Shi, Ge
    Al-Mamun, M
    Zhong, Yulin
    Zhang, Yubai
    Qin, Jiadong
    Zhao, Huijun
    Batmunkh, Munkhbayar
    Year published
    2020
    Metadata
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    Abstract
    Graphene oxide (GO) is well known as a key material to the commercialization of graphene-based applications due to its excellent processability and abundant starting materials. However, producing high quality GO with excellent structural intactness still remains a challenge despite the significant research effort over the past decade. Herein, we demonstrate an effective approach to achieving well-oxidized GO within only 5 h of oxidation time at 5 °C or 25 °C from expanded graphite as a starting material. Our finding reveals that the well-oxidized GO synthesized at 25 °C can regain more graphitic sp2 networks and thus becomes ...
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    Graphene oxide (GO) is well known as a key material to the commercialization of graphene-based applications due to its excellent processability and abundant starting materials. However, producing high quality GO with excellent structural intactness still remains a challenge despite the significant research effort over the past decade. Herein, we demonstrate an effective approach to achieving well-oxidized GO within only 5 h of oxidation time at 5 °C or 25 °C from expanded graphite as a starting material. Our finding reveals that the well-oxidized GO synthesized at 25 °C can regain more graphitic sp2 networks and thus becomes as conductive as the GO prepared at 5 °C by means of thermal annealing or green chemical reduction. We also found that green chemical reduction using vitamin C (VC) is more efficient in restoring the electrical conductivity and reducing the defects in the GO produced at room temperature. The protocol reported in this paper offers a promising, sustainable way to fabricate high quality GO with minimal energy input, while being cost-effective.
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    Journal Title
    Sustainable Materials and Technologies
    Volume
    25
    DOI
    https://doi.org/10.1016/j.susmat.2020.e00198
    Subject
    Environmental engineering
    Science & Technology
    Green & Sustainable Science & Technology
    Energy & Fuels
    Materials Science, Multidisciplinary
    Publication URI
    http://hdl.handle.net/10072/400810
    Collection
    • Journal articles

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