Progress in layered double hydroxides (LDHs): Synthesis and application in adsorption, catalysis and photoreduction

Farhan, Ahmad; Khalid, Aman; Maqsood, Nimra; Iftekhar, Sidra; Sharif, Hafiz Muhammad Adeel; Qi, Fei; Sillanpää, Mika; Asif, Muhammad Bilal

doi:10.1016/j.scitotenv.2023.169160

Cited by 17 publications

(4 citation statements)

References 236 publications

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“…Shortening the self-healing time of the self-healing gel can reduce non-productive time (NPT) and reduce the cost of construction. Layered double hydroxide (LDH) is an inorganic compound composed of negatively charged anions and positively charged metal hydroxides [19][20][21]. Due to their tunable chemical composition and excellent physical properties, LDH have been used as cross-linking agents in the preparation of nanocomposite (NC) gels [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

A Self-Healing Gel with an Organic–Inorganic Network Structure for Mitigating Circulation Loss

Wang,

Sun,

Long

et al. 2024

Gels

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Lost circulation control remains a challenge in drilling operations. Self-healing gels, capable of self-healing in fractures and forming entire gel block, exhibit excellent resilience and erosion resistance, thus finding extensive studies in lost circulation control. In this study, layered double hydroxide, Acrylic acid, 2-Acrylamido-2-methylpropane sulfonic acid, and CaCl2 were employed to synthesize organic-inorganic nanocomposite gel with self-healing properties. The chemical properties of nanocomposite gels were characterized using X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscope, X-ray photoelectron spectroscopy and thermogravimetric analysis. layered double hydroxide could be dispersed and exfoliated in the mixed solution of Acrylic acid and 2-Acrylamido-2-methylpropane sulfonic acid, and the swelling behavior, self-healing time, rheological properties, and mechanical performance of the nanocomposite gels were influenced by the addition of layered double hydroxide and Ca2+. Optimized nanocomposite gel AC6L3, at 90 °C, exhibits only a self-healing time of 3.5 h in bentonite mud, with a storage modulus of 4176 Pa, tensile strength of 6.02 kPa, and adhesive strength of 1.94 kPa. In comparison to conventional gel, the nanocomposite gel with self-healing capabilities demonstrated superior pressure-bearing capacity. Based on these characteristics, the nanocomposite gel proposed in this work hold promise as a candidate lost circulation material.

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Section: Introductionmentioning

confidence: 99%

A Self-Healing Gel with an Organic–Inorganic Network Structure for Mitigating Circulation Loss

Wang,

Sun,

Long

et al. 2024

Gels

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“…For the highly efficient adsorption of synthetic dyes from water, the use of appropriate adsorbents remains a great challenge. Layered double hydroxides (LDHs), an important group of inorganic layered materials are widely employed in catalysis, [9] drug delivery, [10] sensors, [11] adsorption, [12] fuel cells, [13] photodegradation, [14] and lithium batteries. [15] The chemical formula of LDHs is represented by [M 2 + 1-x M 3 + x (OH) 2 ] (A nÀ ) x/n .mH 2 O, so that M 2 + refers to bivalent and M 3 + refers trivalent cations, A nÀ refers to the interlayer anions, and x refers to the molar ratio of M 3 + /(M 2 + + M 3 + ).…”

Section: Introductionmentioning

confidence: 99%

“…The noteworthy properties of LDHs, such as interlayer space for anion exchange, large surface area, and chemical stability, facilitate the effective removal of a wide range of dyes, making LDHs are preferred over other materials. [9] For example, Yimin et al [16] synthesized magnetic hierarchically pillared Sep@Fe3O4/ZnAl-LDH composite via co-precipitation method for methyl orange and Congo red removal. Radji et al [17] prepared recyclable NiAl-LDH Congo red and Alizarin red S dyes removal in single and binary systems.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of MgZnAl Layered Triple Hydroxide Nanoplates as an Efficient Adsorbent for Removing the Acid Yellow 76 Azo Dye

Kazemi,

Pourfaraj,

Biparva

2024

ChemistrySelect

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A simple hydrothermal method was employed for synthesizing MgZnAl layered triple hydroxide nanoplates (MgZnAl LTH) as an efficient adsorbent for removing the Acid Yellow 76 (AY76) azo dye. A batch process was used to perform adsorptions were and investigate the effects of experimental parameters including temperature, adsorbent dosage, solution pH. The best adsorption conditions obtained were pH of 4, MgZnAl LTH dosage of 20 mg and temperature of 55 °C. The kinetics of adsorption was studied using pseudo‐first‐order, pseudo‐second‐order, Elovich, and intraparticle diffusion models. To obtain equilibrium absorption data, Freundlich, Langmuir, and Temkin isotherms were utilized. The findings showed that the adsorption data based on the experiment had a good agreement with the Freundlich model. The highest capacity of adsorption equal to 277.8 mg/g was obtained for the MgZnAl LTH nanoplates toward AY76. Thermodynamic results showed that the process of adsorption of AY76 onto MgZnAl LTH nanoplates had a spontaneous and endothermic nature.

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“…Their functionality can be tailored by adjusting the layered composition, interlayer anions, and conditions of synthesis, offering a high degree of versatility and customization. 11–13 …”

Section: Introductionmentioning

confidence: 99%

MgAl-LDH nanoflowers as a novel sensing material for high-performance humidity sensing

Wang,

Song,

2024

RSC Adv.

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Progress in layered double hydroxides (LDHs): Synthesis and application in adsorption, catalysis and photoreduction

Cited by 17 publications

References 236 publications

A Self-Healing Gel with an Organic–Inorganic Network Structure for Mitigating Circulation Loss

A Self-Healing Gel with an Organic–Inorganic Network Structure for Mitigating Circulation Loss

Synthesis of MgZnAl Layered Triple Hydroxide Nanoplates as an Efficient Adsorbent for Removing the Acid Yellow 76 Azo Dye

MgAl-LDH nanoflowers as a novel sensing material for high-performance humidity sensing

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