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  • Impact of Ag nanoparticles on photomineralization of chlorobenzene by ▫$TiO_2/bentonite$▫ nanocomposite
    Mishra, Amit ...
    TiO2/bentonite nanocomposite was prepared by microwave irradiation method. Different quantities of Ag (0.5-3% by weight) were loaded to the nanocomposite by wet impregnation process to investigate ... their effect on the photocatalytic activity. Morphological and elemental analysis of the as-synthesized nanocomposites were carried out by field emission scanning electron microscope (FESEM), high-resolution transmission electron microscope (HRTEM), energy dispersive spectroscopy (EDS), inductively coupled plasma-Auger electron spectroscopy (ICP-AES) and X-ray photoelectron spectroscopy (XPS). Crystallographic studies were carried out by X-Ray diffraction analysis (XRD). From nitrogen adsorption-desorption (BET-Brunauer Emmett Teller) analysis it was found that surface area and pore volume decreased upon Ag loading but pore size distribution was not much affected in the nanocomposites. The absorption edge and band gap of the nanocomposites were found to be red-shifted after Ag loading as observed from UV–vis DRS (diffuse reflectance spectroscopy) spectra. The prepared Ag-TiO2/bentonite nanocomposites were found to be effective for photocatalytic degradation of harmful volatile organic compounds (VOCs) like chlorobenzene under both UV and visible light. The nanocomposite containing 1.5% of Ag was found to be highly active in degrading chlorobenzene both in UV and visible light.
    Source: Journal of environmental chemical engineering [Elektronski vir]. - ISSN 2213-3437 (Vol. 5, iss. 1, Feb. 2017, str. 644-651)
    Type of material - e-article
    Publish date - 2017
    Language - english
    COBISS.SI-ID - 155079171

    Link(s):

    https://www.sciencedirect.com/science/article/pii/S2213343716304869
    DOI

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