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Preparation of Carbon Nanosheets at Room Temperature
Published on: March 8, 2016
Reduced titania nanosheets as an effective visible-light germicide
Deshuai Zhen1,2, Yu Liu1,2, Craig A Grimes3
1State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, People's Republic of China.
None:
Two-dimensional reduced titania nanosheets (RTNs), synthesized by a solvothermal method, reveal significant visible light-activated germicidal activity. XRD, XPS, EPR, TEM and Raman show successful reduction of anatase TiO2, resulting in Ti3+ formation as well as an increase in the concentration of {001} facets. The RTNs possess a bandgap energy of approximately 2.86 eV, and demonstrate strong absorption over the visible spectrum. Under simulated solar light (λ = 320-780 nm, 70 mW cm-2) the RTNs are found to completely inactivate Escherichia coli bacteria within 1 h. Our study indicates the RTNs have significant potential for ameliorating antibiotic-resistant bacteria in clinical settings under ambient lighting conditions.
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