Facile auto-combustion synthesis of calcium aluminate nanoparticles for efficient removal of Ni(II) and As(III) ions from wastewater

Jahin, Hossam S.; .Kandil, , M.I; Nassar, Mostafa Y.

doi:10.1080/09593330.2022.2036248

Cited by 10 publications

(4 citation statements)

References 89 publications

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“…The nanoparticles of CaAl2O4 had an average particle size of 33.7nm (glycine/urea), 38.8nm (glycine), and 40.4nm (urea) following the calcination method at 800 o C. The nanoparticles formed partially sintered aggregates due to high-temperature treatment leading to the formation of non-uniform shapes. 43.9 mg/g of As 3+ and 58.73 mg/g of Ni 2+ were efficiently removed by the adsorbent nanoparticles at pH 5 and 7, respectively by physisorption [75]. Furthermore, Keshtkar et Despite all the discussed benefits of nanotechnology in the elimination of heavy metals, there still lies a few bottlenecks that are required to be solved to make better use of nanotechnology.…”

Section: Other Heavy Metals Removalmentioning

confidence: 99%

Application of nanomaterials for the removal of heavy metals from wastewater

Kaur,

Athwal

2024

E3S Web Conf.

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Heavy metals ions like mercury, copper, zinc, lead etc. are found in the environment as they are released by various industries directly or indirectly into the soil and water leading to the adverse effects on the nature and its entities so it is a matter of concern which needs immediate attention. These metal ions should be removed from the wastewater via effective methods to protect further contamination caused by it. Heavy metals are noxious substances and, when found in water, lead to adverse effects on humans and the environment. Nanotechnology offers a better treatment method to remove heavy metals from wastewater. The nanomaterials exhibit better adsorption, with significant repeatability to adsorb the heavy metals. This review investigates the prominent mechanisms involved in removing heavy metals from the wastewater such as Langmuir, Freundlich, and Dubinin-Radushkevich models followed by the nanomaterials employed for the adsorption purpose. Moreover, the removal of various heavy metal ions has been discussed. Thus, nanotechnology has proven to remarkably remove heavy metals from wastewater with zero or less toxic effects on the environment. This review gives a clear insight into the application of advance nanomaterials and their role in the removal of heavy metals through the process of adsorption.

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Section: Other Heavy Metals Removalmentioning

confidence: 99%

Application of nanomaterials for the removal of heavy metals from wastewater

Kaur,

Athwal

2024

E3S Web Conf.

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“…𝛼ℎ𝜈 = 𝐴 ℎ𝑣 − 𝐸 (4) where α is the absorption coefficient, h is the Planck constant, A is a constant, ν is the frequency, Eg is the absorption band gap energy, and n is one or four for a direct and indirect band gap, respectively [74,75]. Plots of (αhν) 2 versus hν are shown in Figure 8b. The band gaps of V2O5, S-VO2, and MCC/S-VO2 were estimated to be 2.3, 2.1, and 2.29 eV, respectively.…”

Section: 𝐷 = 𝛽 Cos 𝜃mentioning

confidence: 99%

“…Nanocomposite material revealed the magnificence behind the hidden power of the bulk structure. Nowadays, water pollution is considered to be one of the most crucial issues all over the world [1,2]. Synthetic dyes have a complex aromatic molecular structure, are more stable and hard to degrade, and show potential toxicity, mutagenicity, and carcinogenicity [3].…”

Section: Introductionmentioning

confidence: 99%

A Facile Hydrothermal Synthesis of S-VO2-Cellulose Nanocomposite for Photocatalytic Degradation of Methylene Blue Dye

et al. 2023

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A novel UV-light-active MCC/S-VO2 photocatalyst was successfully synthesized by a simple and reliable hydrothermal route. XRD, FT-IR, Raman analysis, XPS, FE-SEM, EDX, TEM, DRS, and thermal analysis techniques were utilized for the characterization of the as-prepared photocatalysts. The photocatalytic activities of the V2O5, doped S-VO2, and MCC/S-VO2 nanostructures were investigated by monitoring the fading out of the methylene blue (MB) concentration under UV-light irradiation. The results revealed that the photocatalytic degradation of MB via MCC/S-VO2 was superior compared with that exhibited by pure V2O5 and doped S-VO2. It was found that 72.3% of MB (100 mL; 20 mg·L−1) was degraded after 6 h in contact with MCC/S-VO2. Interestingly, the photodegradation of MB dye was enhanced dramatically by adding H2O2, while 92.5% of MB was degraded within 55 min. The kinetic studies revealed that the MB degradation followed the pseudo-first-order model with a rate constant (kobs) of 3.9 × 10−2 min−1. The effect of several active species scavengers on the photocatalytic degradation process was investigated. The data exhibited that hydroxyl radicals and positive holes were the key active species during the degradation process. The stability and reusability of the as-prepared nanostructures were examined, and the results displayed its applicability for the removal of MB dye from aqueous media.

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“…3385 and 1616 cm À1 are related to O-H stretching vibration and H-O-H bending vibration, respectively, originating from moisture and residue of ethylene glycol and Arabic gum. 14,43,52,53 Notably, the broad band at ca. 3385 cm À1 is probably due to overlapped O-H and N-H stretching vibrations.…”

Section: Fourier Transform Infrared Investigation (Ft-ir)mentioning

confidence: 99%