Physico-chemical studies on synthetic disordered Ni-Fe layered double hydroxides

1996 ◽  
Vol 15 (8) ◽  
pp. 718-720 ◽  
Author(s):  
T. Raja ◽  
J. Santhanalakshmi
Keyword(s):  
Layered Double Hydroxides ◽  
Physico Chemical ◽  
Chemical Studies ◽  
Double Hydroxides

scholarly journals New acetate-intercalated CoNiFe, ZnNiFe and CoZnFe layered double hydroxides: Synthesis by hydrolysis in polyol medium and characterization

2014 ◽  
Vol 10 (9) ◽  
pp. 3097-3106 ◽  
Author(s):  
Nawal A. Drici Setti ◽  
Zoubir Derriche ◽  
Noureddine JOUINI
Keyword(s):  
Layered Double Hydroxides ◽  
Uv Spectroscopy ◽  
Chemical Properties ◽  
Interlayer Spacing ◽  
Molar Ratio ◽  
Transmission Electron ◽  
Physico Chemical ◽  
Interlayer Region ◽  
Polyol Medium ◽  
Double Hydroxides

New layered double hydroxides (LDHs) CoNiFe, ZnNiFe and CoZnFe with MII/MIII molar ratio of 3, with acetate ions in the interlayer region have been prepared by forced  hydrolysis in polyol medium.The physico-chemical properties of all products were characterized by the methods of powder X-ray Diffraction, Infrared Spectroscopy, UV-Spectroscopy, Elemental analysis, Thermal analysis, Transmission Electron Microscopy and Scanning Electron Microscopy.It was found that all compounds present the typical features of hydrotalcite-like structure and exhibit a turbostratic character.The insertion of acetate anions into LDHs was confirmed and the interlayer spacing values were respectively 12.47, 13.64 and 14.69 Å for CoNiFe, ZnNiFe and CoZnFe.We notice that there is a difference between the interlayer spacing for all synthesized phases with and without zinc. This can be explained by a structural modification on the level of the layers and/ or different arrangement from the inserted species (anions + water) in the interlayer space for zinc materials.57Fe Mössbauer spectrometry allows concluding the presence of Fe3+ cations which occupy octahedral sites and confirming the absence of Fe2+ in the as-prepared compounds.

scholarly journals Zn2Al layered double hydroxides intercalated and adsorbed with anionic blue dyes: A physico-chemical characterization

2009 ◽  
Vol 333 (1) ◽  
pp. 120-127 ◽  
Author(s):  
Rafael Marangoni ◽  
Mustapha Bouhent ◽  
Christine Taviot-Guého ◽  
Fernando Wypych ◽  
Fabrice Leroux
Keyword(s):  
Layered Double Hydroxides ◽  
Chemical Characterization ◽  
Physico Chemical ◽  
Double Hydroxides

Preparation and Characterization of New Hybrid Materials Type Layered Double Hydroxides Intercalated with 4,6-dinitro-o-cresols

2008 ◽  
Vol 59 (2) ◽  
pp. 165-167
Author(s):  
Mihaela Frunza ◽  
Gabriela Lisa ◽  
Marcel Ionel Popa
Keyword(s):  
Layered Double Hydroxides ◽  
Chemical Characterization ◽  
X Ray Diffraction ◽  
X Ray ◽  
Fourier Transformed Infrared Spectroscopy ◽  
Physico Chemical ◽  
Double Hydroxides ◽  
Synthesized Materials ◽  
Analysis Point

The paper presents the tailoring synthesis and physico-chemical characterization of layered double hydroxides (LDH) intercalated with 4,6-dinitro-o-cresol (DNOC) by coprecipitation method. The X-ray diffraction (DRX), Fourier transformed infrared spectroscopy (FTIR) and thermogravimetric (TG -DTG) analysis point out the presence of the organic compound in the network structure of the synthesized materials. Considering together the pesticide activity of 4,6-dinitro-o-cresol and the biocompatibility of the layered double hydroxides the new synthesized materials could open interesting perspectives for obtaining more environmentally friendly insecticides.

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