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Issue 4, 2018
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Effective removal of organic pollutants using GeO2/TiO2 nanoparticle composites under direct sunlight

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Abstract

TiO2 and GeO2/TiO2 nanoparticle composites were synthesized from titanium tetraisopropoxide, germanium oxide, dry ethanol, and diethanolamine using a solution combustion method. The synthesized catalysts were characterized using powder X-ray diffraction, UV-Vis diffuse reflectance spectroscopy, Brunauer–Emmett–Teller surface area analysis, Fourier transform infrared spectroscopy, Fourier transform Raman spectroscopy, scanning electron microscopy, and transmission electron microscopy. The photocatalytic degradation of rhodamine B (RhB) dye in aqueous solution (2.06 × 10−5 M) was achieved using synthesized pristine TiO2 (P-T) and GeO2/TiO2 (GT) nanoparticle composite catalysts under direct sunlight. Among the synthesized catalysts, 1-GT afforded 100% RhB degradation in aqueous solution within 180 min. Furthermore, 85, 87, and 83% degradation was achieved using P-T, 2-GT, and 3-GT nanoparticles, respectively. RhB degradation was confirmed by chemical oxygen demand and total organic carbon analyses.

Graphical abstract: Effective removal of organic pollutants using GeO2/TiO2 nanoparticle composites under direct sunlight

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Publication details

The article was received on 24 Oct 2017, accepted on 19 Jan 2018 and first published on 05 Feb 2018


Article type: Research Article
DOI: 10.1039/C7QM00492C
Citation: Mater. Chem. Front., 2018,2, 741-751
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    Effective removal of organic pollutants using GeO2/TiO2 nanoparticle composites under direct sunlight

    K. Natarajan, H. C. Bajaj and R. J. Tayade, Mater. Chem. Front., 2018, 2, 741
    DOI: 10.1039/C7QM00492C

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