Author/Authors :
Bhosale, Rajendra D.B.F. Dayanad College of Arts and Science - Solapur, India. , Pujari, Sidram D.B.F. Dayanad College of Arts and Science - Solapur, India. , Muley, Gajanan Department of Physics - Sant Gadge Baba Amravati University - Amravati, India , Pagare, Bathuwell Department of Chemistry - Shri Anand College of Science, Pathardi - Ahmednagar, India. , Gambhire, Anil Department of Chemistry - Shri Anand College of Science, Pathardi - Ahmednagar, India.
Abstract :
Visible-light-activated Cr2O3/SnO2 nanocomposite photocatalyst was prepared by coprecipitation method and
characterized by X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, N2
adsorption-desorption measurement, and UV–vis diffuse reflectance spectroscopy. The results show that phase
composition, crystallite size, Brunauer-Emmett-Teller surface area, and optical absorption of samples varied
significantly with the heat treatment temperatures. The Cr2O3/SnO2 photocatalyst (the molar ratio Cr to Sn is 1:2)
calcined at 400°C for 2 h exhibited maximum photocatalytic activity because it has a smaller particle size of 10.05
nm and a higher surface area of 38.75 m2/g. Under visible-light (λ > 400 nm) irradiation, the degradation rate of
Rhodamine B reached 98.0% in 60 min, which is about 3.5 times higher than that of the standard P25 photocatalyst.
Keywords :
Coprecipitation method , Coupled photocatalyst , Photocatalytic activity , Photoelectron spectroscopy
