Enhanced adsorption performance of aspartic acid intercalated Mg-Zn-Fe-LDH materials for arsenite

2018 ◽  
Vol 47 (14) ◽  
pp. 4994-5004 ◽  
Author(s):  
Hongtao Lu ◽  
Tiantian Lu ◽  
Hua Zhang ◽  
Yanling Qiu ◽  
Daqiang Yin ◽  
...  
Keyword(s):  
Amino Acid ◽  
Aspartic Acid ◽  
Removal Efficiency ◽  
Layered Double Hydroxides ◽  
Hydrophilic Amino Acid ◽  
Adsorption Performance ◽  
Enhanced Adsorption ◽  
Double Hydroxides

Hydrophobic and hydrophilic amino acid intercalated layered double hydroxides were synthesized and evaluated, and Mg7-Zn1-Fe4-Asp-LDH exhibited high removal efficiency for arsenic.

Effect of calcination on adsorption performance of Mg–Al layered double hydroxide prepared by a water-in-oil microemulsion method

RSC Advances ◽  
2016 ◽  
Vol 6 (55) ◽  
pp. 50128-50137 ◽  
Author(s):  
Zhaoxiong Yan ◽  
Bicheng Zhu ◽  
Jiaguo Yu ◽  
Zhihua Xu
Keyword(s):  
Layered Double Hydroxide ◽  
Layered Double Hydroxides ◽  
Orange Ii ◽  
Microemulsion Method ◽  
Adsorption Performance ◽  
Enhanced Adsorption ◽  
Double Hydroxide ◽  
Double Hydroxides

Calcined Mg–Al layered double hydroxides synthesized by water-in-oil microemulsion method exhibit an enhanced adsorption performance for orange II.

scholarly journals Fumonisin B1 Interaction with Mg-Al and Mg-Fe Layered Double Hydroxides: Removal Efficiency and Mechanisms

Materials ◽  
2020 ◽  
Vol 13 (19) ◽  
pp. 4344
Author(s):  
Jakub Matusik ◽  
Youjun Deng
Keyword(s):  
Adsorption Capacity ◽  
Removal Efficiency ◽  
Layered Double Hydroxides ◽  
Lower Layer ◽  
Fumonisin B1 ◽  
Xrd Analysis ◽  
Layer Charge ◽  
Basal Spacing ◽  
Co Precipitation ◽  
Double Hydroxides

Mycotoxins in feed and food are highly toxic and pose a serious danger even at very low concentrations. The use of bentonites in animal diet can reduce toxin bioavailability. However, some mycotoxins like fumonisin B1 (FB1) form anionic species which excludes the use of negatively charged clays. Layered double hydroxides (LDH) with anion-exchange properties, in theory, can be perfect candidates to adsorb FB1. However, fundamental research on the use of LDH for mycotoxins removal is scarce and incomplete. Thus, the presented study was designed to explore such a possibility. The LDH materials with differing chemistry and layer charge were synthesized by co-precipitation both from metal nitrates and chlorides and were then tested for FB1 removal. XRD, FTIR, XPS, and chemical analysis were used for the LDH characterization and to obtain insight into the removal mechanisms. A higher adsorption capacity was observed for the Mg/Al LDH samples (~0.08–0.15 mol/kg) in comparison to the Mg/Fe LDH samples (~0.05–0.09 mol/kg) with no difference in removal efficiency between Cl and NO3 intercalated LDH. The adsorption capacity increased along with lower layer charge of Mg/Al and was attributed to the lower content of bonded carbonates and the increase of non-polar sites which led to matching between the adsorption domains of LDH with FB1. The FTIR analysis confirmed the negative effect of carbonates which hampered the adsorption at pH 7 and led to the highest adsorption at pH 5 (FB1 content ~15.8 ± 0.75 wt.%). The fast surface adsorption (1–2 min) was dominant and XRD analysis of the basal spacing indicated that no FB1 intercalation occurred in the LDH. The XPS confirmed a strong interaction of FB1 with Mg sites of LDH at pH 5 where the interaction with FB1 carboxylate moieties COO− was confirmed. The research confirmed a high affinity and selectivity of LDH structures towards anionic forms of FB1 mycotoxin.

Insight into the adsorption mechanisms of aqueous hexavalent chromium by EDTA intercalated layered double hydroxides: XRD, FTIR, XPS, and zeta potential studies

2019 ◽  
Vol 43 (40) ◽  
pp. 15915-15923 ◽  
Author(s):  
Jing Li ◽  
Liangguo Yan ◽  
Yanting Yang ◽  
Xue Zhang ◽  
Rixin Zhu ◽  
...  
Keyword(s):  
Zeta Potential ◽  
Hexavalent Chromium ◽  
Layered Double Hydroxides ◽  
Batch Experiments ◽  
Adsorption Mechanisms ◽  
Adsorption Performance ◽  
Magnetic Product ◽  
Double Hydroxides ◽  
Insight Into

To understand the possible mechanisms of Cr(vi) adsorption on the surface of modified LDHs, we synthesized EDTA intercalated MgAl-LDH and its magnetic product, and evaluated their adsorption performance for Cr(vi) by batch experiments.

Adsorption Property of MgAl-NO3 Layered Double Hydroxides to Methyl Orange

2013 ◽  
Vol 750-752 ◽  
pp. 1738-1741
Author(s):  
Jian Hui Yan ◽  
Lu Hong Zhang ◽  
You Gen Tang ◽  
Li Zhang
Keyword(s):  
Methyl Orange ◽  
Adsorption Capacity ◽  
Hydrothermal Method ◽  
Layered Double Hydroxides ◽  
Adsorption Property ◽  
Molar Ratio ◽  
Adsorption Performance ◽  
Ft Ir ◽  
Double Hydroxides

MgAl-NO3 LDHs were prepared by hydrothermal method. The as-prepared samples were characterized by SEM, XRD and FT-IR. The adsorption performance of MgAl-NO3 LDHs to methyl orange (MO) was studied. The effects of Mg/Al molar ratio on the adsorption performance of MgAl-NO3 LDHs were investigated. The results showed that the highest adsorption capacity of 499.98mg/g was obtained when the Mg/Al molar ratio was at 2.5:1.

Impact of organic interlayer anions on the CO 2 adsorption performance of Mg-Al layered double hydroxides derived mixed oxides

2017 ◽  
Vol 26 (3) ◽  
pp. 346-353 ◽  
Author(s):  
Qingqing Qin ◽  
Junya Wang ◽  
Tuantuan Zhou ◽  
Qianwen Zheng ◽  
Liang Huang ◽  
...  
Keyword(s):  
Layered Double Hydroxides ◽  
Mixed Oxides ◽  
Adsorption Performance ◽  
Double Hydroxides

Amino Acid Interleaved Layered Double Hydroxides as Promising Hybrid Materials for AA2024 Corrosion Inhibition

2016 ◽  
Vol 2016 (13-14) ◽  
pp. 2006-2016 ◽  
Author(s):  
Thomas Stimpfling ◽  
Pierre Vialat ◽  
Horst Hintze-Bruening ◽  
Patrick Keil ◽  
Viacheslav Shkirskiy ◽  
...  
Keyword(s):  
Amino Acid ◽  
Corrosion Inhibition ◽  
Hybrid Materials ◽  
Layered Double Hydroxides ◽  
Double Hydroxides
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