Synthesis of Cr, Si/TiO2 nano particles by sol-gel method and modelling of their photocatalytic performance utilizing experimental design with response surface methodology (RSM)
کد مقاله : 1307-PHYSCHEM20
مسعود همدانیان *، مطهره مهدی پور
دانشگاه کاشان
چکیده مقاله:
Recently, doping with suitable transitional metals has been attempted as a facile method to Performance improvements of TiO2. Chromium and silicon co-doped TiO2 photocatalyst was synthesized by modified sol–gel method using titanium (IV) isopropoxide, Cr(NO3).6H2O and Tetraethyl orthosilicate (SiC₈H₂₀O₄) as precursors. Using Response Surface methodology (RSM), it was possible to evaluate the role of interaction between Cr and Si in the codoped TiO2 nanoparticles. The photocatalytic activities of Cr and Si–TiO2 nanoparticles were evaluated using the photodegradation of methyl orange (MO) as probe reaction under the irradiation of visible light and it was observed that the Cr, Si–TiO2 photocatalyst shows higher visible photocatalytic activity than the pure TiO2..
کلیدواژه ها:
sol–gel method; Cr, S-codoped TiO2; photocatalytic activities; RSM
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