Physicochemical characteristics of silver nanoparticles: influence of carbonate alkalinity

Alzoubi, F. Y.; Al-Zou’by, Jehad; Aljarrah, Ihsan A.; Al‐Zboon, Kamel K.; Al-Khateeb, H. M.; Alqadi, M. K.; Al‐Bataineh, Qais M.; AlSharo, Etab S.

doi:10.1007/s41204-021-00162-9

Cited by 4 publications

(2 citation statements)

References 45 publications

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“…Matching of intensity with standard hkl planes indicates that the samples are polycrystalline and have face-centred cubic structures. However, in both cases, the intensities of (311) were extremely high compared to other diffraction lines, indicating that they are the preferential orientation of the micro-strain (Alzoubi et al, 2021). The increased peak intensities were attributed to grain growth associated with preferred orientation and/or increase in the degree of crystallisation.…”

Section: Characterisation Of Nano-particlesmentioning

confidence: 87%

Single and Ternary Removal of Heavy Metals from Aqueous Solution Using Fe3O4 Magnetic Nano-particles

Al‐Zboon¹

2023

JJCE

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This research aims to investigate the use of magnetic iron nano-particles (FeN) for the removal of heavy metals under single and ternary scenarios. The methodology includes synthesis of FeN using chemical precipitation approach, batch experiments for single and ternary metals removal, isotherm and kinetic studies, thermos-dynamic study and assessing the effect of different parameters on the adsorption process. The results showed that the maximum removal for As and Hg was achieved at a pH of 7, while a pH of 6 provided a slightly higher removal of Cd than a pH of 7 at an optimum mixing time of 120 minutes. The optimum adsorption capacities of As, Cd and Hg at the initial concentration of 200 ppm were 260, 280 and 75.0 mg/g in the case of single metal removal against 91.5, 237.8 and 341.5 mg/g in the case of ternary combination, respectively. The removal of all metals increased with increasing the FeN dose and the mixing time, while it decreased with the increase of the initial concentration. The removal efficiency was affected strongly by the presence of multiple metals, while As removal decreased sharply and Hg removal increased significantly. Adsorption selectivity is affected negatively by the increase in atomic weight and atomic radius. In the case of single-metal removal, fitting of isotherm models can be ranked as Langmuir>Freundlich>Temkin>D-R for As and Cd and Temkin>Freundlich>D-R>Langmuir for Hg, while contradictory results were obtained in the case of ternary combination. Kinetic studies found that the adsorption follows the pseudo-second-order model with R2=0.99. For all metals, the adsorption process is highly favourable at higher temperatures and is endothermic in nature with (ΔHo) of 10.91, 23.86 and 0.163 for As, Cd and Hg, respectively. Coating of FeN with silica resulted in lower removal efficiency for all metals up to 50%. It can be concluded that FeN can be successfully used for the removal of heavy metals either through the single or ternary approach, but the single approach provides a higher performance. KEYWORDS: Nano-materials, Magnetite iron, Adsorption, Arsenic, Cadmium, Mercury, Lead.

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Section: Characterisation Of Nano-particlesmentioning

confidence: 87%

Single and Ternary Removal of Heavy Metals from Aqueous Solution Using Fe3O4 Magnetic Nano-particles

Al‐Zboon¹

2023

JJCE

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“…Therefore, the dopant materials and concentrations affect ZnO nanostructures' physical and chemical properties [15][16][17]. Among the dopant materials, silver (Ag) is used as a dopant material for zinc oxide nanostructures (ZnO NSs) to improve physical and chemical properties since Ag has high chemical stability and high electrical conductivity [18]. Many studies focused on investigating the influence of Ag doping in ZnO nanostructures.…”

Section: Introductionmentioning

confidence: 99%

Effect of hydrogen-related shallow donor on the physical and chemical properties of Ag-doped ZnO nanostructures

Al‐Bataineh

Ababneh

Bahti

et al. 2022

J Mater Sci: Mater Electron

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Silver-doped zinc oxide nanostructures (Ag/ZnO NSs) with Ag content of 0 wt%, 5 wt%, 10 wt%, and 20 wt% were synthesized using a hydrothermal technique. The prepared nanostructures were annealed at 500 °C for 2 h. The samples were characterized by using scanning electron microscopy, FTIR, X-ray diffraction (XRD), and electrical conductivity. FTIR spectra confirms the presence of hydrogen-related shallow donor defects in the Ag/ZnO NSs, which bind to the oxygen vacancy ($${\text{H}}_{\text{O}}$$ H O ) and consequently plays a significant role in the physicochemical properties of the metal oxide nanostructures. The $${\text{H}}_{\text{O}}$$ H O defects are blended to O- and Zn-polar Ag-doped ZnO NSs, depending on their polarity. XRD results verified that Ag/ZnO NSs have a polycrystalline hexagonal structure. Williamson–Hall methods were used to estimate the microstructural properties of polycrystalline nanostructures. The electrical conductivity increased from 0.60 to 1.10 µS/cm, and the bandgap energy decreased from 3.36 to 3.10 eV by increasing the Ag from 0 wt% up to 20 wt%.

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A study of the physicochemical properties of silver nanoparticles dispersed in various water chemistry settings

Al-Zou’by,

Alsamarraie,

Al-Zboon

2023

J Nanopart Res

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Physicochemical characteristics of silver nanoparticles: influence of carbonate alkalinity

Cited by 4 publications

References 45 publications

Single and Ternary Removal of Heavy Metals from Aqueous Solution Using Fe3O4 Magnetic Nano-particles

Single and Ternary Removal of Heavy Metals from Aqueous Solution Using Fe3O4 Magnetic Nano-particles

Effect of hydrogen-related shallow donor on the physical and chemical properties of Ag-doped ZnO nanostructures

A study of the physicochemical properties of silver nanoparticles dispersed in various water chemistry settings

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