Synthesis of Li–Al layered double hydroxides via a mechanochemical route

Qu, Jun; He, Xiao-Song; Wang, Bentao; Zhong, Lihua; Wan, Lei; Li, Xuewei; Song, Shaoxian; Zhang, Qiwu

doi:10.1016/j.clay.2015.11.017

Cited by 64 publications

(20 citation statements)

References 27 publications

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“…It is also difficult to synthesize a meixnerite‐type LDH with only OH − anion inside. An alternative process under a relatively mild conditions is required to replace the reported methods based on the so called “memory effect”, allowing the reconstruction of the original structure upon the contact of their dehydrated form with water . Mechanochemical approach has been reported to serve the purpose for the synthesis and intercalation of LDH …”

Section: Introductionmentioning

confidence: 99%

“…1,14 Mechanochemical approach has been reported to serve the purpose for the synthesis and intercalation of LDH. 12,15,16 Numerous textile or printing plants, which mainly use dyes, release large amounts of colored wastewater into the environment, containing more than 100 000 kinds of commercial dyes and over 7 million tons annually. 17 Dye waste water normally contain pollutant concentrations in the range of 10 to 50 mg/L, with a concentration restraint for discharge as 1 mg/L.…”

Section: Introductionmentioning

confidence: 99%

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Precursor Preparation to Promote the Adsorption of Mg‐Al Layered Double Hydroxide

Wang

et al. 2016

J. Am. Ceram. Soc.

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This study presents an interesting phenomenon of the simultaneous occurrence of adsorption and synthesis of Mg–Al layered double hydroxide (Mg–Al–LDH) by stirring a precursor in an aqueous solution with methyl orange (MO) as target adsorbate with the precursor prepared by first milling Mg(OH)2 for 1 h followed by another 3 h milling with Al(OH)3.The prepared precursor and LDH samples were characterized by a set of analytical methods including X‐ray diffraction (XRD), thermogravimetry/differential scanning calorimetry (TG–DSC), and Fourier‐transform infrared (FT–IR). The maximum adsorption capacity (Qm) of MO by the prepared precursor sample was 1110.2 mg/g, much higher than that from the synthesized LDH sample. Engineering application may be expected from the easy preparation of such precursor as adsorbent to purify the tremendous amounts of dye wastewater.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Precursor Preparation to Promote the Adsorption of Mg‐Al Layered Double Hydroxide

Wang

et al. 2016

J. Am. Ceram. Soc.

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“…Lithium ions are embedded into lattice vacancies in the octahedral framework of Al(OH) 3 , yielding a positively-charged structure. The charge-balancing anions, e.g., CO 3 2 − , Cl − , NO 3 − , are incorporated to keep the structure charge neutral [34,36,37] . The common molecular formula is [LiAl 2 (OH) 6 ]X n − 1/ n •n H 2 O, in which X nis the anion [38][39][40] .…”

Section: Componentsmentioning

confidence: 99%

Highly efficient extraction of lithium from salt lake brine by LiAl-layered double hydroxides as lithium-ion-selective capturing material

Sun

Guo

et al. 2019

Journal of Energy Chemistry

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“…Subsequently, other types of LDH were fabricated. 12 Qu et al [13][14][15] synthesized Ca-Al LDH, Li-Al LDH and tetraborate pillared Li-Al via the two-step milling method and Ferencz et al 16,17 prepared Ca-Fe and Ca-Sn LDH in the same manner. The reported mechanochemical approach based on solid state reaction exhibits some obvious advantages such as no need for heating treatment and no discharge of waste water as in the traditional hydrothermal process.…”

Section: Introductionmentioning

confidence: 99%

Precursor preparation of Zn–Al layered double hydroxide by ball milling for enhancing adsorption and photocatalytic decoloration of methyl orange

et al. 2017

RSC Adv.

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An amorphous photocatalyst was prepared via simple dry milling of Zn basic carbonate (Zn 4 CO 3 (OH) 6 $H 2 O) and Al hydroxide (Al(OH) 3 ) as a precursor of Zn-Al layered double hydroxide (LDH) and the precursor was agitated in water to simply synthesize the Zn-Al LDH for comparison. The adsorption and photocatalytic activity of the Zn-Al LDH and the precursor were studied via the removal of methyl orange (MO) and decoloration of MO under ultraviolet light irradiation in aqueous solution, respectively. The precursor exhibits much higher decoloration efficiency towards MO than the Zn-Al LDH product because of the synergistic effect of the intercalation reaction and its photocatalytic activity. The amorphous precursor could easily incorporate MO molecules to form MO intercalated LDH, allowing easy access of the organic pollutant to the photocatalyst sample, resulting in an obvious improvement in photocatalytic performance. The novel idea to use the precursor sample instead of the synthesized final product may be applied in other fields to increase the required performances.Fig. 5 XRD patterns (left) of LDH, L-MO-LDH (LDH sample with MO adsorption) and P-MO-LDH (the precursor sample with MO adsorption) and the adsorption model (right) of the precursor and LDH. 31470 | RSC Adv., 2017, 7, 31466-31474 This journal is

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Synthesis of Li–Al layered double hydroxides via a mechanochemical route

Cited by 64 publications

References 27 publications

Precursor Preparation to Promote the Adsorption of Mg‐Al Layered Double Hydroxide

Precursor Preparation to Promote the Adsorption of Mg‐Al Layered Double Hydroxide

Highly efficient extraction of lithium from salt lake brine by LiAl-layered double hydroxides as lithium-ion-selective capturing material

Precursor preparation of Zn–Al layered double hydroxide by ball milling for enhancing adsorption and photocatalytic decoloration of methyl orange

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