Layer-by-layer composite of anionic and cationic clays by metathesis

Venugopal, B.R.; Rajamathi, Michael

doi:10.1016/j.jcis.2010.12.043

Cited by 6 publications

(4 citation statements)

References 34 publications

(34 reference statements)

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“…21 The second stage (160-600 C), with a 48.0% weight change, corresponded to the dehydroxylation of the brucite-like layers and the loss of interlayer sodium dodecyl sulfate. 22 Hence, the total weight loss of the MgAl-SDS-LDH between 25 C and 600 C was 55.8%. In the DTG prole of the MgAl-SDS-LDH, the two stages were accompanied by two distinct endothermic peaks, centered at 110 C and 429 C, respectively.…”

Section: Resultsmentioning

confidence: 95%

The role of soft colloidal templates in the shape evolution of flower-like MgAl-LDH hierarchical microstructures

Zhang

Xie

et al. 2015

RSC Adv.

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Section: Resultsmentioning

confidence: 95%

The role of soft colloidal templates in the shape evolution of flower-like MgAl-LDH hierarchical microstructures

Zhang

Xie

et al. 2015

RSC Adv.

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“…They are rigid and unaffected by temperature fluctuations. Additionally, compared to compounds with a single layer, they exhibit improved properties as a result of the synergistic interaction between the several phases [11]. The layers only have a weak connection to one another, but the ions that are intercalated between them help to keep them stable.…”

Section: Introductionmentioning

confidence: 99%

Sulfur-Doped Binary Layered Metal Oxides Incorporated on Pomegranate Peel-Derived Activated Carbon for Removal of Heavy Metal Ions

et al. 2022

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In this study, a novel biomass adsorbent based on activated carbon incorporated with sulfur-based binary metal oxides layered nanoparticles (SML-AC), including sulfur (S2), manganese (Mn), and tin (Sn) oxide synthesized via the solvothermal method. The newly synthesized SML-AC was studied using FTIR, FESEM, EDX, and BET to determine its functional groups, surface morphology, and elemental composition. Hence, the BET was performed with an appropriate specific surface area for raw AC (356 m2·g−1) and modified AC-SML (195 m2·g−1). To prepare water samples for ICP-OES analysis, the suggested nanocomposite was used as an efficient adsorbent to remove lead (Pb2+), cadmium (Cd2+), chromium (Cr3+), and vanadium (V5+) from oil-rich regions. As the chemical structure of metal ions is influenced by solution pH, this parameter was considered experimentally, and pH 4, dosage 50 mg, and time 120 min were found to be the best with high capacity for all adsorbates. At different experimental conditions, the AC-SML provided a satisfactory adsorption capacity of 37.03–90.09 mg·g−1 for Cd2+, Pb2+, Cr3+, and V5+ ions. The adsorption experiment was explored, and the method was fitted with the Langmuir model (R2 = 0.99) as compared to the Freundlich model (R2 = 0.91). The kinetic models and free energy (<0.45 KJ·mol−1) parameters demonstrated that the adsorption rate is limited with pseudo-second order (R2 = 0.99) under the physical adsorption mechanism, respectively. Finally, the study demonstrated that the AC-SML nanocomposite is recyclable at least five times in the continuous adsorption–desorption of metal ions.

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“…They are thermally stable and rigid. Besides, unlike single-layered compounds, they exhibit superior properties due to the synergistic effect of the different phases (Venugopal and Rajamathi, 2011). The layers are weakly bonded together but stabilized by the ions intercalated between.…”

Section: Introductionmentioning

confidence: 99%

Efficient removal of heavy metal ions from the water of oil‐rich regions using layered metal‐phosphate incorporated activated carbon nanocomposite

Bidhendi

Abedynia

Mirzaei

et al. 2020

Water & Environment J

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In this study, a metal-phosphate layered/activated carbon (KMSP@AC) composed of potassium (K), manganese (Mn), tin (Sn) and phosphorous (P) was prepared by the solvothermal method. The proposed nanocomposite was used as an effective adsorbent to remove Cd(II), Co(II), Ni(II), Pb(II) and V(III) from water samples in oil-rich areas prior to ICP-OES analysis. The KMSP@AC was fully characterized using FTIR, SEM and EDX. Factors influencing the removal process (pH, adsorbent dosage, initial concentration and contact time) were studied and optimized. The experimental process was evaluated with kinetic and isotherm models. The adsorption isotherm investigation showed that the adsorption followed the monolayer Langmuir isotherm model with the maximum adsorption capacities of 25 mg/g (Cd 2+), 31 mg/g (Co 2+), 49 mg/g (Ni 3+), 91 mg/g (Pb 2+) and 141 mg/g (V 3+). The kinetic studies indicated that the pseudo-second-order model is well-fitted to the process with an appropriate correlation coefficient (R 2 > 0.99) at an equilibrium time of 120 min. The adsorption of metal ions on the surface of the adsorbent was mainly a physisorption process through electrostatic interactions.

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Layer-by-layer composite of anionic and cationic clays by metathesis

Cited by 6 publications

References 34 publications

The role of soft colloidal templates in the shape evolution of flower-like MgAl-LDH hierarchical microstructures

The role of soft colloidal templates in the shape evolution of flower-like MgAl-LDH hierarchical microstructures

Sulfur-Doped Binary Layered Metal Oxides Incorporated on Pomegranate Peel-Derived Activated Carbon for Removal of Heavy Metal Ions

Efficient removal of heavy metal ions from the water of oil‐rich regions using layered metal‐phosphate incorporated activated carbon nanocomposite

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