Ambient Light-Activated Antibacterial Material: Manganese Vanadium Oxide (Mn2V2O7)

Singh, J and Hegde, PB and Ravindra, P and Sen, P and Avasthi, S (2021) Ambient Light-Activated Antibacterial Material: Manganese Vanadium Oxide (Mn2V2O7). In: ACS Applied Bio Materials .

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Abstract

Antimicrobial surfaces can reduce the spread of bacteria from high-Touch surfaces, saving millions of lives worldwide. Antibacterial photocatalytic films, like TiO2, are widely reported but limited in practice because they need high-intensity UV light. More practical but less reported are photocatalysts that work under low-intensity visible light from an indoor lamp. Here, we demonstrate that manganese vanadium oxide (MVO) is an antibacterial photocatalyst that works under light-emitting diode (LED) lights at â 3000 lux. MVO is an earth-Abundant semiconductor with a band gap of 1.7 eV that absorbs visible light to create reactive oxygen species (ROS) in water. ROS reduces bacteria counts by 4 orders of magnitude in 8 h under 9000 lux LED light. The antibacterial effect is significant even in MVO powder and films, which are amenable to large-Area fabrication. MVO is a promising candidate for next-generation antimicrobial coatings that are stable, cheap, effective, earth-Abundant, and activated by indoor lights. ©

Item Type:	Journal Article
Publication:	ACS Applied Bio Materials
Publisher:	American Chemical Society
Additional Information:	The copyright for this article belongs to American Chemical Society
Keywords:	Bacteria; Energy gap; Light; Light emitting diodes; Oxide minerals; Titanium dioxide, Antibacterial effects; Antibacterial materials; Antimicrobial coatings; Antimicrobial surface; High intensity; Orders of magnitude; Photocatalytic film; Vanadium oxides, Vanadium compounds
Department/Centre:	Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Date Deposited:	03 Dec 2021 06:49
Last Modified:	03 Dec 2021 06:49
URI:	http://eprints.iisc.ac.in/id/eprint/70101

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