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Issue
Korean Journal of Chemical Engineering,
Vol.32, No.5, 860-866, 2015
Effects of nitrogen and carbon doping on properties and photocatalytic activity of TiO2-In2O3 composite
Wu CH, Kuo CY, Wu JT, Hong PKA, Lai CH, Chung WY
TiO2-In2O3 (Ti-In) was synthesized by the sol-gel method and the composite was further doped with nitrogen and carbon to create Ti-In-N and Ti-In-C, respectively. The dye C.I. Reactive Red 2 (RR2) was used a model compound to be subjected to various composites and measured for removal by photocatalytic degradation and adsorption. Ti-In-N possessed a larger mean diameter than Ti-In-C, while the latter possessed a greater anatase content and surface area than the former. After N or C doping, the spectra of corresponding Ti-In-N and Ti-In-C showed absorption edges at longer wavelengths than the parent Ti-In. Ti-N-O and Ti-O-C bonds were found in Ti-In-N and Ti-In-C composites, respectively. Ti-In-N was more effective for RR2 photodegradation than Ti-In-C, and the Ti-In-C removed more RR2 by adsorption than Ti-In-N.
Keywords: TiO2; In2O3; Nitrogen-doping; Carbon-doping; Photodegradation
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