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• W2341199360 endingPage "132" @default.
• W2341199360 startingPage "125" @default.
• W2341199360 abstract "Following dip coating procedure, we have fabricated extended photocatalytic surface (40 mm×25 mm) of TiO2, nitrogen doped TiO2 (N–TiO2), porous TiO2 (porous-TiO2), nitrogen doped porous TiO2 (porous-N–TiO2) materials over glass slides. A red shift was observed giving a bandgap of 2.56 eV for nitrogen doped TiO2. Raman Scattering shows predominant anatase phase in all the samples along with rutile phase. Using di-chloro fluorescein (DCFH) as a fluorescence reporter molecule, we have characterized OH radical generation. Results show a 5.69×10−8 ppm/cm2/s of OH radicals are generated in porous-N–TiO2 coated surface compared to 3.69×10−8 ppm/cm2/s in TiO2 which confer a 1.54 increase in the utilization of visible light ability to the catalyst. Photocatalytic ability quantified with Methylene Blue degradation gave ~1.48 fold increase under visible light exposure for porous-N–TiO2 relative to TiO2 and the same was 1.1 fold for UV–visible light exposure. Further, the best catalytic degradation turn-over of the surface determined to be 4.55×10−7 ppm/cm2/s and 1.61×10−7 ppm/cm2/s respectively for UV–vis and visible light exposure. Thus a robust and simpler dip coating methodology giving enhanced visible light photocatalytic activity in polymer mediated nitrogen doped TiO2 system has been demonstrated on a large surface area. We conclude that modification of bandgap of TiO2 by nitrogen doping together with polymer mediated porosity has resulted in a strong visible light activity for this material. Since dip coating approach adopted here is cost-effective and amenable to large scale coating processes, it holds potential in the fabrication of large-scale self-cleansing and antimicrobial surfaces for application in medical and diagnostic industries." @default.
• W2341199360 created "2016-06-24" @default.
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• W2341199360 date "2016-08-01" @default.
• W2341199360 modified "2023-09-26" @default.
• W2341199360 title "A study on the free radical generation and photocatalytic yield in extended surfaces of visible light active TiO2 compounds" @default.
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• W2341199360 doi "https://doi.org/10.1016/j.solmat.2016.03.008" @default.
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