Nashrieh Shimi va Mohandesi Shimi Iran

Nashrieh Shimi va Mohandesi Shimi Iran

Synthesis, Characterization, and Investigation of Photocatalytic Performance of the Bi2Sn2O7/g-C3N4 Composite Fabricated Using Ultrasonic Waves for the Degradation of Methyl Orange

Document Type : Research Article

Authors
Mina Khademi 1
Nemat Tahmasebi 1
Shahram Barzegar 2
Hamze Moayeri 1
1 Department of Physics, Jundishapur Dezful University of Technology, Dezful, IR. IRAN
2 Department of Chemistry, Jundishapur Dezful University of Technology, Dezful, IR. IRAN
Abstract
One of the innovative and effective methods for removing these pollutants is the use of photocatalytic technology. In this study, ultrasonic waves at room temperature are employed to synthesis the Bi2Sn2O7/g-C3N4 (BSO/g-CN) composite. The synthesized samples are characterized using various analyses including XRD, SEM, FTIR, EDS, EDS, N2 adsorption-desorption technique, PL, DRS, and EIS. The photocatalytic performance of the samples is compared based on the degradation of methyl orange (MO) under irradiation. The results show that in the presence of the BSO/g-CN composite, approximately 94.7% of MO molecules are degraded, while in the presence of pure g-C3N4 and Bi2Sn2O7, 23.3% and 9.4% of MO molecules are degraded after 90 min of exposure to irradiation, respectively. Therefore, the photocatalytic performance of the BSO/g-CN composite sample has significantly improves compared to the pure samples. This enhancement in photocatalytic performance is attributed to the effective separation of the photogenerated charge carriers and the reduced charge transfer resistance in the composite sample. Finally, the mechanism and the active species involved in the photocatalytic reactions of BSO/g-CN composite are determined. Furthermore, the examination of the stability of photocatalytic performance indicated that the BSO/g-CN sample has suitable reusability in five consecutive cycles of MO degradation.
Keywords
Bi2Sn2O7/g-C3N4
Ultrasound
Photocatalyst
Methyl orange
Water treatment

Subjects

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