scholarly journals Synthesis of MgFe Layered Double Hydroxide from Iron-Containing Acidic Residual Solution and Its Adsorption Performance

Crystals ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 514 ◽  
Author(s):  
Golban ◽  
Lupa ◽  
Cocheci ◽  
Pode
Keyword(s):  
Layered Double Hydroxide ◽  
Acidic Solution ◽  
Morphological Characteristics ◽  
Novel Technologies ◽  
Secondary Sources ◽  
Iron Precursor ◽  
Points Of View ◽  
Double Hydroxide ◽  
Double Hydroxides ◽  
Residual Solution

The paper presents a new method of layered double hydroxide (LDH) synthesis starting from secondary sources, namely acidic residual solutions. The iron content of the acidic solution resulting from the pickling step of the hot-dip galvanizing process make it suitable to be used as an iron precursor in LDH synthesis. Here, Mg4Fe–LDH synthesized through the newly proposed method presented structural and morphological characteristics similar to the properties of layered double hydroxides synthesized from analytical-grade reagents. Moreover, the as-synthesized LDH and its calcined product presented efficient adsorption properties in the removal process of Mo(VI) from aqueous solutions. The adsorption studies are discussed from the equilibrium, kinetic, and thermodynamic points of view. The proposed novel technologies present both economic and environmental protection benefits.

scholarly journals A class of novel luminescent layered double hydroxide nanotubes

RSC Advances ◽  
2021 ◽  
Vol 11 (40) ◽  
pp. 24747-24751
Author(s):  
Dimy Nanclares ◽  
Alysson F. Morais ◽  
Thainá Calaça ◽  
Ivan G. N. Silva ◽  
Danilo Mustafa
Keyword(s):  
Layered Double Hydroxide ◽  
Layered Double Hydroxides ◽  
Soft Templating ◽  
Double Hydroxide ◽  
Double Hydroxides

The incorporation of triply charged lanthanides in layered double hydroxides (LDHs) enables the curvature of the LDH sheets, unlocking the possibility of using a soft templating strategy to produce a class of luminescent, hierarchical LDH nanotubes.

Enhancing adsorptive removal of sulfate by metal layered double hydroxide functionalized Quartz-Albitophire iron ore waste: preparation, characterization and properties

RSC Advances ◽  
2016 ◽  
Vol 6 (72) ◽  
pp. 67630-67642 ◽  
Author(s):  
B. Sadeghalvad ◽  
A. Azadmehr ◽  
A. Hezarkhani
Keyword(s):  
Layered Double Hydroxide ◽  
Iron Ore ◽  
Sem Analysis ◽  
Adsorptive Removal ◽  
Double Hydroxide ◽  
Double Hydroxides ◽  
Mineral Waste

In this study, the seemingly worthless Quartz-Albitophire iron ore mineral waste has been modified with metal double hydroxides (Mg–Al, Ni–Fe, Ni–Al and Mg–Fe) and utilized as a sulfate adsorbent which is characterized by XRD, XRF, FTIR and SEM analysis.

Synthesis of Li/Al layered double hydroxide-guest composites under mild acid conditions

Clay Minerals ◽  
2004 ◽  
Vol 39 (2) ◽  
pp. 115-121 ◽  
Author(s):  
Deng-Shiu Yang ◽  
Ming-Kuang Wang ◽  
Shan-Li Wang
Keyword(s):  
Layered Double Hydroxide ◽  
Layered Double Hydroxides ◽  
Starting Material ◽  
Anionic Clays ◽  
Step Procedure ◽  
Alkaline Conditions ◽  
Double Hydroxide ◽  
Double Hydroxides ◽  
Mild Acid ◽  
Positively Charged

AbstractLayered double hydroxides (LDHs) are known as ‘anionic clays’. They comprise a class of material with positively charged octahedral double hydroxyl layers and exchangeable anions. The Li/Al LDH term includes a group of LDHs with Li/Al octahedral double hydroxyl layers. We have demonstrated a modifed method, using Li/Al LDH-OH (OH− as interlayer anions) as the starting material, for preparing Li/Al LDH-X (X represents interlayer anions, including dioctyl sulphosuccinate (DOSS), dodecyl sulphate (DDS), mercaptoacetate (MA), EDTA, Tiron and dichromate) under mild acid conditions (pH in the range 4 to 5). However, in the case of acidsensitive anions, Fe(CN)64−, Li/Al LDH-Fe(CN)64− can be prepared by a two-step procedure using Li/Al LDH-DOSS or similar compounds as intermediates to react with acid-sensitive anions under mild alkaline conditions (pH ≈ 9).

A highly efficient and durable water splitting system: platinum sub-nanocluster functionalized nickel–iron layered double hydroxide as the cathode and hierarchical nickel–iron selenide as the anode

2019 ◽  
Vol 7 (6) ◽  
pp. 2831-2837 ◽  
Author(s):  
Qing Yan ◽  
Peng Yan ◽  
Tong Wei ◽  
Guiling Wang ◽  
Kui Cheng ◽  
...  
Keyword(s):  
Water Splitting ◽  
Layered Double Hydroxide ◽  
Layered Double Hydroxides ◽  
Nickel Iron ◽  
Iron Selenide ◽  
Highly Efficient ◽  
Double Hydroxide ◽  
Double Hydroxides ◽  
Splitting System

A highly-efficient water splitting device is assembled with the platinum sub-nanoclusters functionalized nickel iron layered double hydroxides and hierarchical nickel iron selenides.

Layered double hydroxide and sulindac coiled and scrolled nanoassemblies for storage and drug release

RSC Advances ◽  
2016 ◽  
Vol 6 (20) ◽  
pp. 16419-16436 ◽  
Author(s):  
Michele A. Rocha ◽  
Philippe A. D. Petersen ◽  
Erico Teixeira-Neto ◽  
Helena M. Petrilli ◽  
Fabrice Leroux ◽  
...  
Keyword(s):  
Drug Release ◽  
Layered Double Hydroxide ◽  
Layered Double Hydroxides ◽  
P Systems ◽  
Synthetic Method ◽  
One Pot ◽  
High Crystallinity ◽  
Anti Inflammatory ◽  
Double Hydroxide ◽  
Double Hydroxides

Systems comprising anti-inflammatory sulindac intercalated into biocompatible layered double hydroxides nanovehicles were isolated through one pot synthetic method and showed high crystallinity and curled or scrolled particles.

Ultrasonication-assisted synthesis of ternary-component Ni3AlxFe1−x-layered double hydroxide nanoparticles for the oxygen evolution reaction in a neutral solution

2018 ◽  
Vol 42 (16) ◽  
pp. 13963-13970 ◽  
Author(s):  
Leila Jafari Foruzin ◽  
Biuck Habibi ◽  
Zolfaghar Rezvani
Keyword(s):  
Oxygen Evolution ◽  
Layered Double Hydroxide ◽  
Layered Double Hydroxides ◽  
Oxygen Evolution Reaction ◽  
Neutral Solution ◽  
Rapid Process ◽  
Double Hydroxide ◽  
Double Hydroxides ◽  
Ternary Component ◽  
Layered Double Hydroxide Nanoparticles

In this study, ultrasonication, a facile and rapid process, was utilized for the preparation of ternary-component layered double hydroxides (LDHs), Ni3AlxFe1−x-LDHs, as the electrocatalyst material for the oxygen evolution reaction (OER) in a neutral solution.

scholarly journals Nanohybrid layered double hydroxide materials as efficient catalysts for methanol electrooxidation

RSC Advances ◽  
2019 ◽  
Vol 9 (24) ◽  
pp. 13503-13514 ◽  
Author(s):  
Shimaa Gamil ◽  
Waleed M. A. El Rouby ◽  
Manuel Antuch ◽  
I. T. Zedan
Keyword(s):  
Layered Double Hydroxide ◽  
Layered Double Hydroxides ◽  
Methanol Electrooxidation ◽  
Double Hydroxide ◽  
Double Hydroxides

Methanol electrooxidation over layered double hydroxides.

scholarly journals Modulating the electronic structure of ultrathin layered double hydroxide nanosheets with fluorine: an efficient electrocatalyst for the oxygen evolution reaction

2019 ◽  
Vol 7 (24) ◽  
pp. 14483-14488 ◽  
Author(s):  
Zhijuan Liu ◽  
Chung-Li Dong ◽  
Yu-Cheng Huang ◽  
Jiajie Cen ◽  
Haotian Yang ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Oxygen Evolution ◽  
Layered Double Hydroxide ◽  
Plasma Etching ◽  
Layered Double Hydroxides ◽  
Oxygen Evolution Reaction ◽  
Etching Technique ◽  
Double Hydroxide ◽  
Double Hydroxides

Herein, we effectively modulate the electronic structure of Co3Fe layered double hydroxides (LDHs) by F-doping using a CHF3-plasma etching technique.

scholarly journals Core–shell zeolite@aqueous miscible organic-layered double hydroxides

2016 ◽  
Vol 7 (2) ◽  
pp. 1457-1461 ◽  
Author(s):  
Chunping Chen ◽  
Coral F. H. Byles ◽  
Jean-Charles Buffet ◽  
Nicholas H. Rees ◽  
Yue Wu ◽  
...  
Keyword(s):  
Layered Double Hydroxide ◽  
Hybrid Materials ◽  
Layered Double Hydroxides ◽  
Coprecipitation Method ◽  
Core Shell ◽  
Double Hydroxide ◽  
Double Hydroxides ◽  
Microporous Zeolite ◽  
General Method

We report a general method for the synthesis of core–shell hybrid materials containing a microporous zeolite core with an aqueous miscible organic-layered double hydroxide (AMO-LDH) shell using a simplein situcoprecipitation method.

scholarly journals Adsorption of Orange II Onto Zn2Al–Layered Double Hydroxide Prepared From Zinc Ash

2020 ◽  
Vol 8 ◽  
Author(s):  
Andra Tǎmaş ◽  
Ioana Cozma ◽  
Laura Cocheci ◽  
Lavinia Lupa ◽  
Gerlinde Rusu
Keyword(s):  
Layered Double Hydroxide ◽  
Structural Characteristics ◽  
Dye Adsorption ◽  
Treatment Method ◽  
Orange Ii ◽  
Efficient Treatment ◽  
Secondary Sources ◽  
Adsorption Processes ◽  
Zinc Ash ◽  
Double Hydroxide

The dye industry is one of the largest water consuming industries, and at the same time generates large quantities of wastewaters. The resulting wastewaters require proper treatment before discharge, because the dye contents have a negative effect on the water body and organisms present in it. The most efficient treatment method for water containing dyes is represented by adsorption processes. The challenge with these adsorption processes is to develop new, efficient, viable, and economic adsorbent materials. Therefore, in the present paper, the performance of Zn2Al-layered double hydroxide, prepared from an industrial waste (zinc ash) as a zinc source, was investigated in the Orange II dye adsorption process. The Zn2Al-layered double hydroxide prepared from secondary sources presents similar morphological and structural characteristics as those prepared from analytical grade reagents. The influence of initial dye concentration, adsorption time, solid:liquid ratio, pH, and temperature was evaluated in order to confirm the benefit of this waste valorization. A comparison with the reference Zn2Al-layered double hydroxide prepared from analytical grade reagents was performed and the results show that due to the small presence of impurities, the material prepared from zinc ash shows better adsorption capacities (qmax,exp = 42.5 mg/g at 293 K) than the material prepared from reagents (qmax,exp = 36.9 mg/g at 293 K), justifying the utilization of secondary sources for layered double hydroxides preparation. The proposed treatment process presents advantages from both economic and environmental protection point of view.

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