One-Step Formation and Characterization of Zn(II)−Cr(III) Layered Double Hydroxides, Zn2Cr(OH)6X (X = Cl,1/2SO4)

1998 ◽  
Vol 10 (8) ◽  
pp. 2050-2052 ◽  
Author(s):  
Joseph W. Boclair ◽  
Paul S. Braterman
Keyword(s):  
Layered Double Hydroxides ◽  
One Step ◽  
Double Hydroxides

scholarly journals LAYERED DOUBLE HYDROXIDES: NANOMATERIALS FOR APPLICATIONS IN AGRICULTURE

2015 ◽  
Vol 39 (1) ◽  
pp. 1-13 ◽  
Author(s):  
Luíz Paulo Figueredo Benício ◽  
Rejane Alvarenga Silva ◽  
Júnia Aparecida Lopes ◽  
Denise Eulálio ◽  
Rodrigo Morais Menezes dos Santos ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Layered Double Hydroxides ◽  
Slow Release ◽  
Structural Characteristics ◽  
Synthesis Methods ◽  
Double Hydroxides ◽  
Near Future

The current research aims to introduce Layered Double Hydroxides (LDH) as nanomaterials to be used in agriculture, with particular reference to its use as storage and slow release matrix of nutrients and agrochemicals for plant growing. Structural characteristics, main properties, synthesis methods and characterization of LDH were covered in this study. Moreover, some literature data have been reported to demonstrate their potential for storage and slow release of nitrate, phosphate, agrochemicals, besides as being used as adsorbent for the wastewater treatment. This research aims to expand, in near future, the investigation field on these materials, with application in agriculture, increasing the interface between chemistry and agronomy.

Structural characterization of azoic dye hosted layered double hydroxides

2009 ◽  
Vol 224 (5-6) ◽  
Author(s):  
Sujata Mandal ◽  
Dan A. Lerner ◽  
Nathalie Marcotte ◽  
Didier Tichit
Keyword(s):  
Structural Characterization ◽  
Layered Double Hydroxides ◽  
Double Hydroxides

scholarly journals Preparation, intercalation, and characterization of nanostructured (Zn, Al) layered double hydroxides (LDHs)

2018 ◽  
Vol 50 (11) ◽  
pp. 1094-1098 ◽  
Author(s):  
M. Richetta ◽  
A. Varone ◽  
A. Mattoccia ◽  
P.G. Medaglia ◽  
S. Kaciulis ◽  
...  
Keyword(s):  
Layered Double Hydroxides ◽  
Double Hydroxides

scholarly journals Exploring the Wet Mechanochemical Synthesis of Mg-Al, Ca-Al, Zn-Al and Cu-Al Layered Double Hydroxides from Oxides, Hydroxides and Basic Carbonates

Crystals ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 954 ◽  
Author(s):  
Brenda Antoinette Barnard ◽  
Frederick Johannes Willem Jacobus Labuschagné
Keyword(s):  
Mechanochemical Synthesis ◽  
Layered Double Hydroxides ◽  
Raw Materials ◽  
Green Method ◽  
Synthesis Conditions ◽  
Starting Point ◽  
Bead Mill ◽  
One Step ◽  
Synthesis Procedure ◽  
Double Hydroxides

The synthesis of Mg-Al, Ca-Al, Zn-Al and Cu-Al layered double hydroxides (LDHs) was investigated with a one-step wet mechanochemical route. The research aims to expand on the mechanochemical synthesis of LDH using a mill designed for wet grinding application. A 10% slurry of solids was added to a Netzsch LME 1 horizontal bead mill and milled for 1 h at 2000 rpm. Milling conditions were selected according to machine limitations and as an initial exploratory starting point. Precursor materials selected consisted of a mixture of oxides, hydroxides and basic carbonates. Samples obtained were divided such that half was filtered and dried at 60 °C for 12 h. The remaining half of the samples were further subjected to ageing at 80 °C for 24 h as a possible second step to the synthesis procedure. Synthesis conditions, such as selected precursor materials and the MII:MIII ratio, were adapted from existing mechanochemical methods. LDH synthesis prior to ageing was successful with precursor materials observably present within each sample. No Cu-Al LDH was clearly identifiable. Ageing of samples resulted in an increase in the conversion of raw materials to LDH product. The research offers a promising ‘green’ method for LDH synthesis without the production of environmentally harmful salt effluent. The synthesis technique warrants further exploration with potential for future commercial up-scaling.

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