The phytogenic synthesized CeO 2 -Sm 2 O 3 is a green, efficient and cost-effective catalyst. The CeO 2 -Sm 2 O 3 composite was characterized using XRD, FTIR, Raman, TGA, UV-DRS, TEM, FE-SEM and EDAX. The synthesized CeO 2 -Sm 2 O 3 shows a high catalytic activity for the reduction of 4-nitrophenol in the presence of the sodium borohydride under ambient conditions. This CeO 2 -Sm 2 O 3 nanocomposite catalyst shows good stability and reusability without much loss in conversion efficiency. CeO 2 -Sm 2 O 3 possess great prospects in the reduction of nitro organic pollutants in water.
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Pinheiro et al. (2019) studied this question.
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