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    Photoregenerable, bifunctional granules of carbon-doped g-C3N4 as adsorptive photocatalyst for the efficient removal of tetracycline antibiotic

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    Fulltext not available
    Authors
    Panneri, S.
    Ganguly, P.
    Mohan, M.
    Nair, Balagopal
    Mohamed, A.
    Warrier, K.
    Hareesh, U.
    Date
    2017
    Collection
    • Curtin Research Publications
    Type
    Journal Article
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    Abstract

    Environmental remediation employing semiconducting materials offer a greener solution for pollution control. Herein, we report the development of high surface area porous architecture of C3N4 nanosheets by a simple aqueous spray drying process. g-C3N4 nanosheets obtained by the thermal decomposition of urea-thiourea mixture are spray granulated to microspheres using 2 wt% poly vinyl alcohol (PVA) as binder. The post granulation thermal oxidation treatment resulted in in situ doping of carbon leading to improved photophysical properties compared to pristine g-C3N4. The C3N4 granules with surface area values of 150 m2/g rendered repetitive adsorption of tetracycline antibiotic (~75% in 60 min) and the extended absorption in the visible region facilitated complete photocatalytic degradation upon sunlight irradiation (>95% in 90 min). The delocalized p bonds generated after carbon doping and the macro-meso porous architecture created by the granulation process aided high adsorption capacity (70 mg/g). The photoregenerable, bifunctional materials herein obtained can thus be employed for the adsorption and subsequent degradation of harmful organic pollutants without any secondary remediation processes.

    Citation
    Panneri, S. and Ganguly, P. and Mohan, M. and Nair, B. and Mohamed, A. and Warrier, K. and Hareesh, U. 2017. Photoregenerable, bifunctional granules of carbon-doped g-C3N4 as adsorptive photocatalyst for the efficient removal of tetracycline antibiotic. ACS Sustainable Chemistry and Engineering. 5 (2): pp. 1610-1618.
    Source Title
    ACS Sustainable Chemistry and Engineering
    URI
    http://hdl.handle.net/20.500.11937/50517
    DOI
    10.1021/acssuschemeng.6b02383
    Department
    Nanochemistry Research Institute

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