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Journal of Advances in Nanomaterials
JAN > Volume 4, Number 1, March 2019

Hydrothermal Preparation and Characterization of Co-based Layered Double Hydroxide and their Catalytic Activity

Download PDF  (1457.3 KB)PP. 1-10,  Pub. Date:November 12, 2018
DOI: 10.22606/jan.2019.41001

Author(s)
A.I. Abd-Elhamid, Hisham M.A. Soliman, H. F. Aly
Affiliation(s)
Advanced Technology and New Materials Research Institute, City for Scientific Research and Technology Applications, P. O. Box 21934, SRTA, Egypt
Advanced Technology and New Materials Research Institute, City for Scientific Research and Technology Applications, P. O. Box 21934, SRTA, Egypt
Hot Laboratories Center, Atomic Energy Authority, Nasr 13759, Egypt
Abstract
In this report an efficient catalyst was prepared by hydrothermal route to produce Co-Al layered double hydroxide nanosheets (LDH-NS) (less active material), followed by alkali treatment to prepare the more active material (A-LDH). The scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and Energy-dispersive X-ray spectroscopy (EDX) techniques were used to determine the morphological and chemical properties, chemical structure and the elemental analysis of both layered double hydroxide nanosheets LDH-NS and alkali treated layered double hydroxide nanosheets (A-LDH). Moreover, the both samples LDHNS and A-LDH show a significantly catalytic behavior towards the degradation of crystal violet (CV) dye in the presence of H2O2 as assisting agent. However, the catalytic efficiency for both samples LDH-NS and A-LDH is highly reduced in the absence of the oxidizing agent (H2O2). The apparent rate constant of the catalytic degradation reaction was preformed from the first order kinetic model.
Keywords
Layered double hydroxide; alkali treatment; catalytic degradation; CV-dye; water treatment.
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