Experimental design for optimization of 4-nitrophenol reduction by green synthesized CeO2/g-C3N4/Ag catalyst using response surface methodology
4-Nitrophenol; Box-Behnken design; CeO2/g-C3N4/Ag; Heterogeneous catalysis; Rare earths; Response surface methodology
In this study, the enhancement of catalytic activity of ceria when modified with co-catalysts such as graphitic carbon nitride and silver was established. The material was synthesized using phytogenic combustion method, a green alternative to the traditional preparative routes. The catalyst was characterized using XRD, FTIR, SEM, EDX, XPS and TEM techniques. The synergistic effect of the composite CeO2/g-C3N4/Ag was tested for catalytic reduction of 4-nitrophenol in the presence of sodium borohydride. The reaction was carried out at room temperature without any light source or external stirring. The individual and combined effects of four parameters, viz., concentration of 4-NP, amount of catalyst, amount of NaBH4 and time for the reduction of reduction 4-NP were investigated using Box-Behnken design of response surface methodology (RSM). This statistical model was used to optimize the reaction conditions for maximum reduction of 4-NP. The optimum conditions for the reduction reaction are found to be 0.01 mmol/L 4-NP, 15 mg catalyst, 20 mg NaBH4 and 13.7 min time interval. 2020 Chinese Society of Rare Earths
Pinheiro D.; Sunaja Devi K.R.; Jose A.; Karthik K.; Sugunan S.; Krishna Mohan M.
Journal of Rare Earths, Vol-38, No. 11, pp. 1171-1177.
https://doi.org/10.1016/j.jre.2019.10.001 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85082201966&doi=10.1016%2fj.jre.2019.10.001&partnerID=40&md5=8f29dbeaff3bc1d280c9bf34ae7a3ba5
Pinheiro D., Department of Chemistry, CHRIST (Deemed to Be University) Bangalore, 560029, Karnataka, India; Sunaja Devi K.R., Department of Chemistry, CHRIST (Deemed to Be University) Bangalore, 560029, Karnataka, India; Jose A., Department of Chemistry, CHRIST (Deemed to Be University) Bangalore, 560029, Karnataka, India; Karthik K., Department of Chemistry, CHRIST (Deemed to Be University) Bangalore, 560029, Karnataka, India; Sugunan S., Department of Applied Chemistry, Cochin University of Science and Technology, Cochin, 682022, Kerala, India; Krishna Mohan M., Department of Science and Humanities, Faculty of Engineering, CHRIST (Deemed to Be University) Bangalore, 560074, Karnataka, India