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Author Mani, A. Daya ♦ Reddy, P. Manoj Kumar ♦ Srinivaas, M. ♦ Ghosal, P. ♦ Xanthopoulos, N. ♦ Subrahmanyam, Ch.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword MATERIALS SCIENCE ♦ ADSORPTION ♦ ASCORBIC ACID ♦ CARBON ♦ CHROMIUM COMPLEXES ♦ CITRIC ACID ♦ DOPED MATERIALS ♦ IRRADIATION ♦ NANOMATERIALS ♦ NANOSTRUCTURES ♦ PHENOL ♦ PHOTOCATALYSIS ♦ REDUCTION ♦ SEMICONDUCTOR MATERIALS ♦ SYNTHESIS ♦ THERMAL GRAVIMETRIC ANALYSIS ♦ TITANIUM OXIDES ♦ TRANSMISSION ELECTRON MICROSCOPY ♦ VISIBLE SPECTRA ♦ X-RAY DIFFRACTION ♦ X-RAY PHOTOELECTRON SPECTROSCOPY
Abstract Highlights: • Facile synthesis of C-doped TiO{sub 2} nanomaterials with high surface area. • Utilization of citric acid and ascorbic acid as fuels based on evolution of gases. • Enhanced visible activity for the oxidation of phenol and reduction of Cr(VI). • Study of simultaneous oxidation of phenol and reduction of Cr(VI) for the first time. • Proposed plausible mechanism for the simultaneous removal of phenol and Cr(VI). - Abstract: A single step synthesis of carbon doped TiO{sub 2} (anatase) nanomaterials have been reported by using combustion synthesis using ascorbic acid and citric acid fuels. X-ray diffraction studies indicated the formation of nanosized anatase titania, whereas, transmission electron microscopy confirmed the formation of nanosized TiO{sub 2} anatase. The carbon doping into TiO{sub 2} matrix was identified by X-ray photoelectron spectroscopy, whereas, thermogravimetric study quantified the carbon doping. Diffuse reflectance UV–vis spectra indicated the band gap of less than 3 eV, a prerequisite for the photocatalytic activity under visible light irradiation. The N{sub 2} adsorption studies revealed the high surface area (upto 290 m{sup 2}/g) of the synthesized photocatalysts. Typical photocatalytic activity data indicated that the simultaneous removal of Cr(VI) and phenol is advantageous than degradation of the individual pollutants.
ISSN 00255408
Educational Use Research
Learning Resource Type Article
Publisher Date 2015-01-15
Publisher Place United States
Journal Materials Research Bulletin
Volume Number 61


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