Cellulose acetate-Ce/Zr@Cu0 catalyst for the degradation of organic pollutant

International Journal of Biological Macromolecules
Shahid Ali KhanSher Bahadar Khan

Abstract

In the present work, Cu nanoparticles were stabilized on ceria/zirconia (Ce/Zr@Cu0), cellulose acetate (CA@Cu0), and a thin film of cellulose acetate embedded ceria/zirconia (CA-Ce/Zr) designated as CA-Ce/Zr@Cu0. In the presence of a reducing agent, all the catalysts revealed excellent catalytic efficiency in aqueous media for the reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) and degradation of cationic dyes methylene blue (MB) and rhodamine B (RB). Different order of equations were applied to determine the adjacent R2 value and rate constant. Adjacent R2 values for MB are 9.470, 9.422 and 9.050 and its kapp values per minutes are 1.7 × 10-1, 8.3 × 10-2, and 6. 7 × 10-1 with Ce/Zr@Cu0, CA@Cu0, and CA-Ce/Zr@Cu0 derived from the pseudo 1st order kinetics, while in the absence of catalyst the R2 and kapp for MB degradation in the presence of NaBH4 is 0.8643 and 3.4 × 10-3 respectively. Furthermore, regression models, ANOVA and correlation coefficients suggested that all the data are highly significant. The synthesized catalysts were applied for the simultaneous reduction/degradation of mixture of 4-NP-MB, 4-NP-RB and 4-NP-MB-RB mixture to check the practical applicability. Catalytic recyclability of CA-Ce/Zr@Cu0 cataly...Continue Reading

Citations

Jan 8, 2021·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Shahid Ali KhanSher Bahadar Khan
Nov 22, 2020·International Journal of Biological Macromolecules·Nujud MaslamaniAbdullah M Asiri
Mar 19, 2021·Environmental Science and Pollution Research International·Nujud MaslamaniAbdullah M Asiri
Jul 21, 2021·International Journal of Biological Macromolecules·Esraa M BakhshAbdullah M Asiri

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