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.

scholarly journals Structural insight into the photoinduced E→Z isomerisation of cinnamate embedded in ZnAl and MgAl layered double hydroxides

2020 ◽  
Vol 1219 ◽  
pp. 128561
Author(s):  
Zita Timár ◽  
Gábor Varga ◽  
Márton Szabados ◽  
Krisztián Csankó ◽  
Tünde Alapi ◽  
...  
Keyword(s):  
Layered Double Hydroxides ◽  
Structural Insight ◽  
Double Hydroxides ◽  
Insight Into

Interaction of U(VI) with ternary layered double hydroxides by combined batch experiments and spectroscopy study

2018 ◽  
Vol 338 ◽  
pp. 579-590 ◽  
Author(s):  
Shuang Song ◽  
Ling Yin ◽  
Xiangxue Wang ◽  
Li Liu ◽  
Shuyi Huang ◽  
...  
Keyword(s):  
Layered Double Hydroxides ◽  
Spectroscopy Study ◽  
Batch Experiments ◽  
Double Hydroxides

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

scholarly journals Effect of Chain Length and Functional Group of Organic Anions on the Retention Ability of MgAl- Layered Double Hydroxides for Chlorinated Organic Solvents

2019 ◽  
Vol 3 (4) ◽  
pp. 89 ◽  
Author(s):  
Karen Maria Dietmann ◽  
Tobias Linke ◽  
Raquel Trujillano ◽  
Vicente Rives
Keyword(s):  
Chain Length ◽  
Organic Solvents ◽  
Layered Double Hydroxides ◽  
Functional Group ◽  
Interlayer Space ◽  
Organic Anions ◽  
Batch Experiments ◽  
Swelling Properties ◽  
Chlorinated Organic ◽  
Double Hydroxides

Nowadays, the contamination of groundwater and soils by chlorinated organic solvents is a severe and worldwide problem. Due to their swelling properties, Layered Double Hydroxides (LDHs) are potentially excellent compounds to retain chlorinated organic solvents from aquifers. By intercalating organic anions, the polarity of the interlayer space can be changed from hydrophilic to hydrophobic, enhancing the adsorption of chloro-organic molecules onto the alkyl chains of intercalated organic anions. In this study, organically modified LDHs were synthesized and their efficiency was tested in batch experiments with three different chlorinated organic solvents, namely trichloroethylene, 1,1,2-trichloroethane and trichloromethane (chloroform), to examine the influence of the chain length and the functional group of the intercalated organic anion upon the retention ability of a LDH due to different electronic interactions and different sizes of the interlayer space. All synthesized and used samples were characterized using powder X-ray diffraction, thermal analysis coupled with mass spectrometry and Fourier-transform infrared spectroscopy; freshly synthesized materials were additionally analyzed regarding their particle size distribution and specific surface area. Results of the batch experiments showed that only LDHs with intercalated long-chain organic anions could be efficient adsorbents for the removal of chlorinated organic solvents from contaminated water. A selective efficiency towards 1,1,2-trichloroethane and trichloromethane can be proposed for these reactants.

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