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A novel method of co-doping TiO2 with carbon and boron for enhancing photocatalytic degradation of 4-nitrophenol

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Abstract

The carbon/boron co-doped TiO2 (CBCT) photocatalyst was produced through the gel-hydrothermal process in this study. Its properties were then analyzed by using XRD, FE-SEM, EDX, FTIR, BET and Raman techniques, according to which the CBCT had the dominant anatase phase, whereas its specific surface area (46.1 m2/g) and porosity (0.101) made it a suitable photocatalyst. The response surface methodology (RSM) was then employed to design an experiment to study the effects of pH, initial 4-nitrophenol concentration, irradiation time, irradiation intensity, and nanocatalyst concentration on the 4-nitrophenol removal efficiency. Based on the proposed experiments by the RSM, the highest removal efficiency (99.8%) was reported at a pH of 3.6, an initial 4-nitrophenol concentration of 20 mg/L, an irradiation time of 50 min, an irradiation intensity of 60 W, and a nanocatalyst concentration of 0.4 g/L. Increasing pH and pollutant concentration decreased removal efficiency; similarly, increasing nanocatalyst concentration, irradiation time, and intensity reduced removal efficiency. The photocatalytic removal of 4-nitrophenol was performed in the presence of 1% v/v of H2O2. Finally, the 4-nitrophenol removal efficiency was modeled based on the five designated parameters.

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Acknowledgements

The authors would like to thank Habib Pourdelan and Morteza jafarikojour for their contributions to this work.‬‬‬‬‬‬‬

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Correspondence to T. Ebadi.

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Editorial Responsibility: Shahid Hussain.

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Azizi, M., Ebadi, T. & Qaderi, F. A novel method of co-doping TiO2 with carbon and boron for enhancing photocatalytic degradation of 4-nitrophenol. Int. J. Environ. Sci. Technol. 19, 2619–2634 (2022). https://doi.org/10.1007/s13762-021-03386-z

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  • DOI: https://doi.org/10.1007/s13762-021-03386-z

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