Improved nanocomposite of montmorillonite and hydroxyapatite for defluoridation of water

Fernando, M. A.; Wimalasiri, A. K. D. V. K.; Ratnayake, Samantha Prabath; Jayasinghe, J. M. A. R. B.; William, Gareth R.; Dissanayake, D. P.; Silva, K.M. Nalin de; Silva, Rohini M. de

doi:10.1039/c9ra03981c

Cited by 31 publications

(15 citation statements)

References 59 publications

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“…Metal oxides have great potential for adsorption, favorable safety, minimal water solubility, and a beneficial capacity for desorption, making them suitable materials. Some of them are magnetic iron-aluminum oxide/graphene oxide nanoparticles, 21 hydrous iron oxide incorporating cerium, 3 Ce–Zr oxide nanosphere-encapsulated calcium alginate beads, 22 iron–aluminum nanocomposites, 23 aluminium oxide nanoparticles, 24,25 nanoscale aluminium oxide hydroxide, 26 magnetic core–shell Ce–Ti@Fe 3 O 4 nanoparticles, 27 hydroxyapatite montmorillonite nanocomposites, 28 2-line ferrihydrite, 29 cupric oxide nanoparticles, 30 CeO 2 /SiO 2 , 31 Ce–Zn binary metal oxides, 32 and superparamagnetic zirconia nanomaterials (ZrO 2 /SiO 2 /Fe 3 O 4 ). 33 However, the removal of fluoride by these materials has resulted in low adsorption capacities ( i.e.…”

Section: Introductionmentioning

confidence: 99%

Investigation of kinetics and adsorption isotherm for fluoride removal from aqueous solutions using mesoporous cerium–aluminum binary oxide nanomaterials

et al. 2021

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Section: Introductionmentioning

confidence: 99%

Investigation of kinetics and adsorption isotherm for fluoride removal from aqueous solutions using mesoporous cerium–aluminum binary oxide nanomaterials

et al. 2021

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“…The broad peak was found at 3631 cm -1 which indicates the structural -OH stretching frequency of MMT. Another broad peak was observed at 3378 cm -1 this could be the hydroxyl group of phosphate in HA [35]. A peak that appeared at 1634 cm -1 indicates the -OH bending vibration of a water molecule in the composite.…”

Section: Resultsmentioning

confidence: 95%

Fabrication of Biologically Active Fish Bone Derived Hydroxyapatite and Montmorillonite Blended Sodium Alginate Composite for In-Vitro Drug Delivery Studies

Ahamed

Manimohan

Kalaivasan

2022

J Inorg Organomet Polym

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Fishbone comprising hydroxyapatite (bio-ceramic) is regularly viewed as a natural resource for biological and pharmaceutical applications. In this study, hydroxyapatite has been prepared from shbone waste using thermal calcination method. The composite hydroxyapatite-montmorillonite-sodium alginate was synthesized by co-precipitation method. Various functional groups of biocomposite were characterised using Fourier Transform infrared spectroscopy (FT-IR). Thermal gravimetric analysis (TGA) and X-ray diffraction studies were exhibited the thermal stability and crystallinity of biocomposite respectively. The morphological surface of composites was studied using scanning electron microscopy (SEM). The synthesized composite was designed to study the enhanced biological potential such as antibacterial, antioxidant, antidiabetic, drug loading and the drug releasing ability. Antioxidant and anti-diabetic analysis of composite were studied using Phosphomolybdenum and α-Amylase inhibitory method respectively. The drug releasing ability of compounds (Doxorubicin and Curcumin) were investigated by UV-spectrophotometry method at different pH medium (pH = 5.5, 6.8 and 7.4). Additionally, In-vitro kinetic studies were carried out on composite to determine the drug releasing ability of doxorubicin and curcumin.

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“…Kinetic Studies. Kinetic studies of Pb(II), Cd(II), As(V), and F − adsorption were carried out at initial concentrations of 1900, 400, 1, and 40 ppm, respectively, using 0.04 g of HAP composite and 20 mL of the target solution for 2 h. 79 4.7. Detailed Analysis of HAP-CTS.…”

Section: Methodsmentioning

confidence: 99%

Biopolymer-Based Nanohydroxyapatite Composites for the Removal of Fluoride, Lead, Cadmium, and Arsenic from Water

et al. 2021

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In this study, hydroxyapatite (HAP) nanocomposites were prepared with chitosan (HAP-CTS), carboxymethyl cellulose (HAP-CMC), alginate (HAP-ALG), and gelatin (HAP-GEL) using a simple wet chemical in situ precipitation method. The synthesized materials were characterized using scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray diffraction, Brunauer−Emmett−Teller surface area analysis, and thermogravimetric analysis. This revealed the successful synthesis of composites with varied morphologies. The adsorption abilities of the materials toward Pb(II), Cd(II), F − , and As(V) were explored, and HAP-CTS was found to have versatile adsorption properties for all of the ions, across a wide range of concentrations and pH values, and in the presence of common ions found in groundwater. Additionally, X-ray photoelectron spectroscopy and energydispersive X-ray spectroscopy confirmed the affinity of HAP-CTS toward multi-ion mixture containing all four ions. HAP-CTS was hence engineered into a more user-friendly form, which can be used to form filters through its combination with cotton and granular activated carbon. A gravity filtration study indicates that the powder form of HAP-CTS is the best sorbent, with the highest breakthrough capacity of 3000, 3000, 2600, and 2000 mL/g for Pb(II), Cd(II), As(V), and F − , respectively. Hence, we propose that HAP-CTS could be a versatile sorbent material for use in water purification.

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Improved nanocomposite of montmorillonite and hydroxyapatite for defluoridation of water

Abstract: A novel hydroxyapatite montmorillonite (HAP-MMT) nanocomposite was synthesized using a simple wet chemical in situ precipitation method. This nanocomposite showed improved adsorption properties towards fluoride ions in water.

Cited by 31 publications

References 59 publications

Investigation of kinetics and adsorption isotherm for fluoride removal from aqueous solutions using mesoporous cerium–aluminum binary oxide nanomaterials

Investigation of kinetics and adsorption isotherm for fluoride removal from aqueous solutions using mesoporous cerium–aluminum binary oxide nanomaterials

Fabrication of Biologically Active Fish Bone Derived Hydroxyapatite and Montmorillonite Blended Sodium Alginate Composite for In-Vitro Drug Delivery Studies

Biopolymer-Based Nanohydroxyapatite Composites for the Removal of Fluoride, Lead, Cadmium, and Arsenic from Water

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