Surface-modified iron oxide nanoparticles for adsorption, photodegradation, and selective removal applications

Obaid, Hussein S.; Halbus, Ahmed F.

doi:10.1007/s00706-023-03080-5

Cited by 2 publications

(1 citation statement)

References 59 publications

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“…In our modern life and the industrial revolution, massive volumes of harmful substances are constantly released into the environment 1 – 3 , such as phosphate, heavy metals, biological pollutants, nitrate, sulphate, and acidic rain 4 – 6 . Among a wide range of these pollutants, synthetic dyes are utilized in several kinds of applications and industries like plastics, paper, textiles, leather cosmetics and dyeing industries 7 – 9 .…”

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confidence: 99%

Comparison activity of pure and chromium-doped nickel oxide nanoparticles for the selective removal of dyes from water

Athab,

Halbus,

Mohammed

et al. 2024

Sci Rep

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The current study involves a synthesis of a composite of nickel oxide nanoparticles (NiONPs) with a chromium dopant to yield (Cr/NiONPs). Synthesis of nickel oxide was performed by the co-precipitation method. The synthesis of the composite was conducted by the impregnation method. FTIR, EDX, SEM, and XRD were used to characterize the synthesized materials. The synthesised materials’ point zero charges (PZC) were performed using the potentiometric titration method. The obtained results show that the PZC for neat nickel oxide was around 5, and it was around 8 for Cr/NiONPs. The adsorption action of the prepared materials was examined by applying them to remove Reactive Red 2 (RR2) and Crystal Violate (CV) dyes from solutions. The outcomes demonstrated that Cr/NiONPs were stronger in the removal of dyes than NiONPs. Cr/NiONPs achieved 99.9% removal of dyes after 1 h. Adsorption isotherms involving Freundlich and Langmuir adsorption isotherms were also conducted, and the outcomes indicated that the most accurate representation of the adsorption data was offered by Langmuir adsorption isotherms. Additionally, it was discovered that the adsorption characteristics of the NiONPs and Cr/NiONPs correspond well with the pseudo-second-order kinetic model. Each of the NiONPs and Cr/NiONPs was reused five times, and the results display that the effectiveness of the removal of RR2 dye slightly declined with the increase in reuse cycles; it lost only 5% of its original efficiency after the 5 cycles. Generally, Cr/NiONPs showed better reusability than NiONPs under the same conditions.

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Section: Introductionmentioning

confidence: 99%

Comparison activity of pure and chromium-doped nickel oxide nanoparticles for the selective removal of dyes from water

Athab,

Halbus,

Mohammed

et al. 2024

Sci Rep

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Phytonanofabrication of iron oxide particles from the Acacia jacquemontii plant and their potential application for the removal of brilliant green and Congo red dye from wastewater

Patel,

Desai,

Patel

et al. 2023

Front. Bioeng. Biotechnol.

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Phytonanofabrication is one of the most promising areas that has drawn the attention of scientists worldwide due to its eco-friendly nature and biocompatibility. In the current investigation, we reported the phyto-assisted formation of iron oxide nanoparticles (IONPs) from a rare species of Acacia (Acacia jacquemontii). First, ethanolic extracts of the stem powder were analyzed by high-performance thin-layer chromatography (HPTLC) for the identification of phytochemicals in the stem sections of Acacia. Furthermore, IONPs were synthesized by a chemical co-precipitation method by using the stem extract. The phytonanofabricated iron oxide particles were investigated by UV–Vis spectroscopy, Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and Energy-dispersive X-ray spectroscopy (EDS) for elemental analysis. HPTLC confirmed the presence of several phenols and terpenoids in the ethanolic extracts of the stem. UV–Vis spectroscopy exhibited an absorbance peak at 380 nm, indicating the formation of IONPs, while FTIR spectroscopy showed the typical bands for Fe-O in the range of 599–1,000 cm−1 in addition to several functional groups of organic molecules at 1,596 cm−1, 2,313 cm−1, and 3,573 cm−1. XRD exhibits the amorphous nature of IONPs with peaks at 30.7, 35.5, and 62.7 nm. The IONPs were spherical-shaped, whose size varies from 10 to 70 nm, as confirmed by FESEM. EDS exhibited the presence of Fe, O, C, and NaCl. Finally, the phytonanofabricated iron oxide particles were utilized for the removal of brilliant green (BG) and Congo red (CR) dye from the aqueous solution. The removal efficiency of BG dye was up to 54.28%, while that of Congo red dye was up to 36.72% in 120 min and 60 min, respectively. Furthermore, the effect of pH and contact time was also assessed on both the dyes, where CR exhibited maximum removal at acidic pH, i.e., 47.5%, while BG showed maximum removal at pH 10, i.e., 76.59%.

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Surface-modified iron oxide nanoparticles for adsorption, photodegradation, and selective removal applications

Cited by 2 publications

References 59 publications

Comparison activity of pure and chromium-doped nickel oxide nanoparticles for the selective removal of dyes from water

Comparison activity of pure and chromium-doped nickel oxide nanoparticles for the selective removal of dyes from water

Phytonanofabrication of iron oxide particles from the Acacia jacquemontii plant and their potential application for the removal of brilliant green and Congo red dye from wastewater

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