Simultaneous adsorption of trace sulfamethoxazole and hexavalent chromium by biochar/MgAl layered double hydroxide composites

2019 ◽  
Vol 16 (1) ◽  
pp. 68 ◽  
Author(s):  
Guowan Li ◽  
Zhujian Huang ◽  
Chengyu Chen ◽  
Hongcan Cui ◽  
Yijuan Su ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Human Health ◽  
Layered Double Hydroxide ◽  
Layered Double Hydroxides ◽  
Metal Species ◽  
Simultaneous Removal ◽  
Simultaneous Adsorption ◽  
Potential Risks ◽  
Double Hydroxide ◽  
Double Hydroxides

Environmental contextWater contamination by antibiotics and heavy metals entails potential risks to both the environment and human health. Composite materials based on MgAl-layered double hydroxides and biochar simultaneously adsorbed the toxic sulfamethoxazole and CrVI metal species. These findings indicate that biochar/metal hydroxide composites could be valuable adsorbents for the simultaneous removal of trace antibiotics and metals from water. AbstractWater contamination by antibiotics and heavy metals has drawn wide attention because of the potential risks it poses to both the environment and human health. In this study, a series of adsorbents was successfully synthesised based on MgAl-layered double hydroxides (LDHs) and biochar (BC) derived from Pennisetum sinese Roxb. The batch adsorption experiment results showed that the obtained composites could effectively adsorb trace sulfamethoxazole (SMX) and CrVIsimultaneously. The simultaneous adsorption of trace SMX and CrVI are well described by the pseudo-second-order kinetics and Freundlich isotherm models. Characterisation of the composites after adsorption showed that the composites adsorbed SMX mainly by π-π bonds, hydrophobic interactions and hydrogen bonds. Electrostatic interaction, anion exchange, intraparticle diffusion and hydrogen bonding are the main mechanisms for CrVI adsorption onto the composites. This study indicates that the biochar/MgAl layered double hydroxide composites are promising adsorbents for the simultaneous removal of trace antibiotics and CrVI.

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.

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.

Confined synthesis of carbon dots with tunable long-wavelength emission in a 2-dimensional layered double hydroxide matrix

Nanoscale ◽  
2020 ◽  
Vol 12 (14) ◽  
pp. 7888-7894 ◽  
Author(s):  
Wendi Liu ◽  
Ruizheng Liang ◽  
Yanjun Lin
Keyword(s):  
Optical Properties ◽  
Layered Double Hydroxide ◽  
Layered Double Hydroxides ◽  
Carbon Dots ◽  
Long Wavelength ◽  
Wavelength Emission ◽  
Double Hydroxide ◽  
Double Hydroxides

CDs with gradual modulation in structures and optical properties can be obtained through a confined reaction in 2-dimentsonal layered double hydroxides.

Converting Mn/Al layered double hydroxide anion exchangers into cation exchangers by topotactic reactions using alkali metal sulfate solutions

2019 ◽  
Vol 55 (54) ◽  
pp. 7824-7827 ◽  
Author(s):  
Anne Raquel Sotiles ◽  
Fernando Wypych
Keyword(s):  
Alkali Metal ◽  
Layered Double Hydroxide ◽  
Layered Double Hydroxides ◽  
Metal Sulfate ◽  
Hydroxide Anion ◽  
Sulfate Solutions ◽  
Topotactic Reactions ◽  
Cation Exchangers ◽  
Double Hydroxide ◽  
Double Hydroxides

Layered double hydroxides [Mn2Al(OH)6](An−)x/n·yH2O (An− = Cl− or NO3−) were exchanged with Na2SO4 and cationic/anionic exchangers [Mn6Al3(OH)18](SO4,NaSO4) were obtained.

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