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PdCu Nanoparticles Stabilized on Porous CeO 2 for Catalytic Degradation of Azo Dyes: Structural Characterization and Kinetic Studies
Author(s) -
Saikia Himadri,
Duarah Rajib,
Sudarsanam Putla,
Bhargava Suresh K.,
Bharali Pankaj
Publication year - 2017
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201601674
Subject(s) - congo red , catalysis , methyl orange , nanoparticle , x ray photoelectron spectroscopy , materials science , fourier transform infrared spectroscopy , oxalate , hydrothermal circulation , raman spectroscopy , degradation (telecommunications) , nuclear chemistry , chemical engineering , inorganic chemistry , chemistry , photocatalysis , nanotechnology , organic chemistry , adsorption , telecommunications , physics , optics , computer science , engineering
In this work, a series of porous CeO 2 stabilized PdCu nanoparticles are synthesized by a modified hydrothermal method and applied for catalytic reductive degradation of azo dyes. For the synthesis of CeO 2 support a simple precipitation method is adopted using ammonium oxalate as precipitant. Synthesized support and nanoparticles are characterized by XRD, TGA, BET surface area, SEM/EDX, TEM, Raman, UV‐visible DRS, FTIR and XPS analyses. Catalytic studies show that the synthesized nanoparticles can efficiently reduce model azo dyes, methyl orange (MO) and congo red (CR) with good recyclability. Among various PdCu compositions, Pd 1 Cu 9 /CeO 2 exhibits superior catalytic activity towards reductive degradation of MO and CR at room temperature. Thus, PdCu/CeO 2 nanoparticles can be accepted as potential component for the application in wastewater treatment.