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DOI: https://doi.org/10.4491/eer.2018.228
Hydrothermally synthesized Al-doped BiVO4 as a potential antibacterial agent against methicillin-resistant Staphylococcus aureus
Charles Sundar Vicas1,2, Namratha Keerthiraj2, Nayan Byrappa3, and Kullaiah Byrappa1,2
1Department of Materials Science, Mangalore University, Mangalagangotri, Mangalore 574199, India
2Center for Materials Science and Technology, Vijnana Bhavan, University of Mysore, Mysore 570006, India
3Department of Studies in Environmental Science, University of Mysore, Mysore 570006, India
Corresponding Author: Kullaiah Byrappa ,Tel: +91-7259667666, Email: kbyrappa@gmail.com
Received: July 9, 2018;  Accepted: November 23, 2018.
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One-pot hydrothermal route was adopted to synthesize Al:BiVO4, at 4 h and 8 h reaction durations, by adding 1% aluminiumoxide powder (w/v) to the precursors. The products were investigated using several characterization techniques that conform a significant morphological change and a decrease in bandgap energy of the materials upon Al modification of scheelite monoclinic bismuth vanadate matrix at both hydrothermal durations. Antibacterial experiments were performed against methicillin-resistant Staphylococcus aureus in visible light condition to harness the photoxidation property of Al doped BiVO4 and compare to that of unaltered BiVO4. Minimum inhibitory concentration of the synthesized materials was identified. The results indicate that Al-doping on BiVO4 has a significant effect on its photocatalytic antibacterial performance. Al:BiVO4 synthesized at 8 h hydrothermal treatment parades excellent sunlight-driven photocatalysis compared to the one synthesized at 4 h.
Keywords: Bandgap energy | Hydrothermal method | Methicillin-resistant Staphylococcus aureus | Photo-oxidation | Selective doping
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