Mesoporous nanocrystalline sulfonated hydroxyapatites enhance heavy metal removal and antimicrobial activity

Oulguidoum, Abdeladim; Bouiahya, K.; Bouyarmane, H.; Talbaoui, Ahmed; Nunzi, Jean‐Michel; Laghzizil, A.

doi:10.1016/j.seppur.2020.117777

Cited by 32 publications

(7 citation statements)

References 34 publications

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“…In this sample, the most sensitive bacterium was E. coli inches and the fungus C. Albicans, which had the same minimum inhibitory concentration value as a standard antibiotic or antifungal. It can be assumed that this type of core-shell structured nanocomposite material led to a combined effect, where the bacteria was attracted to the hydroxyapatite nanolayer, and further by the photocatalytic effect, it was decomposed by titanium dioxide, which led to bacteria death [32,33]. The connection between bacteria and HAp occurred due to the formation of hydrogen and covalent bonds among the carbohydrate groups, in the bacteria's membrane, and hydroxyl and phosphate groups of HAp [27].…”

Section: Resultsmentioning

confidence: 99%

Hydroxyapatite/TiO2 Nanomaterial with Defined Microstructural and Good Antimicrobial Properties

et al. 2022

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Due to the growing number of people infected with the new coronavirus globally, which weakens immunity, there has been an increase in bacterial infections. Hence, knowledge about simple and low-cost synthesis methods of materials with good structural and antimicrobial properties is of great importance. A material obtained through the combination of a nanoscale hydroxyapatite material (with good biocompatibility) and titanium dioxide (with good degradation properties of organic molecules) can absorb and decompose bacteria. In this investigation, three different synthesis routes used to prepare hydroxyapatite/titanium dioxide nanomaterials are examined. The morphology and semiquantitative chemical composition are characterized by scanning electron microscopy with energy dispersive X-ray analysis (SEM-EDX). The obtained materials’ phase and structural characterization are determined using the X-ray powder diffraction method (XRD). The crystallite sizes of the obtained materials are in the range of 8 nm to 15 nm. Based on XRD peak positions, the hexagonal hydroxyapatite phases are formed in all samples along with TiO2 anatase and rutile phases. According to SEM and TEM analyses, the morphology of the prepared samples differs depending on the synthesis route. The EDX analysis confirmed the presence of Ti, Ca, P, and O in the obtained materials. The IR spectroscopy verified the vibration bands characteristic for HAp and titanium. The investigated materials show excellent antimicrobial and photocatalytic properties.

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Section: Resultsmentioning

confidence: 99%

Hydroxyapatite/TiO2 Nanomaterial with Defined Microstructural and Good Antimicrobial Properties

et al. 2022

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“…In addition to compounding HAp with other materials, the surface modification of HAp can be also an effective method to remove heavy metals. Oulguidoum et al grafted 1, 3-benzenedisulfonate on a HAp surface and then carried out adsorption experiments on Pb 2+ , Zn 2+ and Cd 2+ ions [ 69 ]. The results indicated that, compared with the blank control group, the adsorption ability of the materials on these ions had increased significantly, which was attributed to the enhancement of the metal immobilization by the grafted groups [ 69 ].…”

Section: Adsorption Of Heavy Metals From Aqueous Solutionsmentioning

confidence: 99%

“…Oulguidoum et al grafted 1, 3-benzenedisulfonate on a HAp surface and then carried out adsorption experiments on Pb 2+ , Zn 2+ and Cd 2+ ions [ 69 ]. The results indicated that, compared with the blank control group, the adsorption ability of the materials on these ions had increased significantly, which was attributed to the enhancement of the metal immobilization by the grafted groups [ 69 ]. Moreover, the grafted material still showed good adsorption performance after three cycles of adsorption–desorption, indicating the reversibility of adsorption at the solid surface sites [ 69 ].…”

Section: Adsorption Of Heavy Metals From Aqueous Solutionsmentioning

confidence: 99%

Applications of Nano Hydroxyapatite as Adsorbents: A Review

et al. 2022

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Nano hydroxyapatite (Ca10(PO4)6(OH)2, HAp) has aroused widespread attention as a green and environmentally friendly adsorbent due to its outstanding ability in removing heavy metal ions, radio nuclides, organic pollutants and fluoride ions for wastewater treatment. The hexagonal crystal structure of HAp supports the adsorption mechanisms including ionic exchange reaction, surface complexation, the co-precipitation of new partially soluble phases and physical adsorption such as electrostatic interaction and hydrogen bonding. However, nano HAp has some drawbacks such as agglomeration and a significant pressure drop during filtration when used in powder form. Therefore, instead of using nano HAp alone, researchers have worked on modificationsand composites of nano HAp to overcome these issues and enhance the adsorption capacity. The modification of cationic doping and organic molecule grafting for nano HAp can promote the immobilization of ions and then increase adsorption capacity. Developing nano HAp composite with biopolymers such as gelatin, chitosan and chitin has proven to obtain a synergetic effect for improving the adsorption capacity of composites, in which nano HAp fixed and dispersed in polymers can playmuch more of a role for adsorption. This review summarizes the adsorption properties and adsorbent applications of nano HAp as well as the methods to enhance the adsorption capacity of nano HAp.

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“…Furthermore, hydroxyapatite is naturally found in vertebrate hard tissues [3] and invertebrate shells [4]. Currently, hydroxyapatite is used for other purposes, e.g., as a heterogeneous catalyst [5], an adsorbent [6], a source of biofuel cells [7], a bioimaging agent [8], in glassy carbon electrodes [9], and in drug-delivery carriers [10].…”

Section: Introductionmentioning

confidence: 99%

Photoluminescent Properties of Hydroxyapatite and Hydroxyapatite/Multi-Walled Carbon Nanotube Composites

et al. 2021

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Hydroxyapatite (HAp) and hydroxyapatite/multi-walled carbon nanotube (MWCNT) composites were obtained by the co-precipitation method, followed by ultrasound-assisted and microwave radiation and thermal treatment at 250 °C. X-ray diffraction (XRD) confirmed the presence of a hexagonal phase in all the samples, while Fourier-transform infrared (FTIR) spectroscopy elucidated the interaction between HAp and MWCNTs. The photoluminescent technique revealed that HAp and the composite with non-functionalized MWCNTs present a blue luminescence, while the composite with functionalized MWCNTs, under UV-vis radiation shows an intense white emission. These findings allowed presentation of a proposal for the use of HAp and HAp with functionalized MWCNTs as potential materials for optoelectronic and medical applications.

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Mesoporous nanocrystalline sulfonated hydroxyapatites enhance heavy metal removal and antimicrobial activity

Cited by 32 publications

References 34 publications

Hydroxyapatite/TiO2 Nanomaterial with Defined Microstructural and Good Antimicrobial Properties

Hydroxyapatite/TiO2 Nanomaterial with Defined Microstructural and Good Antimicrobial Properties

Applications of Nano Hydroxyapatite as Adsorbents: A Review

Photoluminescent Properties of Hydroxyapatite and Hydroxyapatite/Multi-Walled Carbon Nanotube Composites

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