Green synthesis of NiO nanoparticles using Aloe vera gel extract and evaluation of antimicrobial activity

Borjali, Ahmad; Khan, M.I.; Naeem, Mohamed Ahmed; Alhodaib, Aiyeshah; Fatima, Mahvish; Amami, Mongi; Alabbad, Eman A.; Kausar, Abida; Alwadai, Norah; Nazir, Arif; Iqbal, Munawar

doi:10.1016/j.matchemphys.2022.126363

Cited by 36 publications

(7 citation statements)

References 55 publications

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“…However, it is considered that the transition to rutile needs higher temperatures if the TiO 2 NPs are synthesized using Peltophorum pterocarpum extract [ 198 ]. The crystallinity of green nickel oxide NPs was also increased at higher temperatures, between 300 °C and 500 °C [ 199 ].…”

Section: Factors Affecting the Biological Synthesis Of Nanoparticlesmentioning

confidence: 99%

New Green Approaches in Nanoparticles Synthesis: An Overview

Miu

Dinischiotu

2022

Molecules

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Nanotechnology is constantly expanding, with nanomaterials being more and more used in common commercial products that define our modern life. Among all types of nanomaterials, nanoparticles (NPs) occupy an important place, considering the great amount that is produced nowadays and the diversity of their applications. Conventional techniques applied to synthesize NPs have some issues that impede them from being appreciated as safe for the environment and health. The alternative to these might be the use of living organisms or biological extracts that can be involved in the green approach synthesis of NPs, a process that is free of harmful chemicals, cost-effective and a low energy consumer. Several factors, including biological reducing agent concentration, initial precursor salt concentration, agitation, reaction time, pH, temperature and light, can influence the characteristics of biologically synthesized NPs. The interdependence between these reaction parameters was not explored, being the main impediment in the implementation of the biological method on an industrial scale. Our aim is to present a brief review that focuses on the current knowledge regarding how the aforementioned factors can control the size and shape of green-synthesized NPs. We also provide an overview of the biomolecules that were found to be suitable for NP synthesis. This work is meant to be a support for researchers who intend to develop new green approaches for the synthesis of NPs.

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Section: Factors Affecting the Biological Synthesis Of Nanoparticlesmentioning

confidence: 99%

New Green Approaches in Nanoparticles Synthesis: An Overview

Miu

Dinischiotu

2022

Molecules

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“…NiO is widely employed in photocatalytic applications in the sectors of energy and the environment. It has intriguing photocatalytic effectiveness, because it is biocompatible, chemically stable, exhibits excellent photosensitivity, is inexpensive, has high redox potential, is nontoxic, and is environmentally friendly . The extended band gap energy of 3.6 eV limits its responsiveness to UV radiation, which makes up a minimal portion of the solar light energy reaching our planet.…”

Section: Introductionmentioning

confidence: 99%

“…It has intriguing photocatalytic effectiveness, because it is biocompatible, chemically stable, exhibits excellent photosensitivity, is inexpensive, has high redox potential, is nontoxic, and is environmentally friendly. 12 The extended band gap energy of 3.6 eV limits its responsiveness to UV radiation, which makes up a minimal portion of the solar light energy reaching our planet. Although UV light can be artificially generated, it poses significant risks to human health and necessitates meticulous handling.…”

Section: Introductionmentioning

confidence: 99%

NiO/MnFe₂O₄ Nanocomposite Photoluminescence, Structural, Morphological, Magnetic, and Optical Properties: Photocatalytic Removal of Cresol Red under Visible Light Irradiation

Amjad,

Bibi,

Majid

et al. 2024

ACS Omega

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In this study, pure nickel oxide (NiO), manganese ferrite (MnFe2O4 or MFO), and binary nickel oxide/manganese ferrite (NiO/MFO1–4) nanocomposites (NCs) were synthesized using the Sol–Gel method. A comprehensive investigation into their photoluminescence, structural, morphological, magnetic, optical, and photocatalytic properties was conducted. Raman analysis, UV–Vis spectroscopy, Fourier-transform infrared spectroscopy, scanning electron microscopy, and X-ray diffraction techniques were used to characterize the materials. The synthesized samples exhibited superparamagnetic behavior, as revealed by our analysis of their magnetic properties. A lower recombination rate was shown by the photoluminescence analysis, which is helpful for raising photocatalytic activity. The photocatalytic activity was evaluated for the degradation of Cresol Red (CR) dye. 91.6% of CR dye was degraded by NiO/MFO-4 nanocomposite, and the NC dosage as well as solution pH affected the photocatalytic performance significantly. In four sequential photocatalytic cycles, the magnetically separable NCs were stable and recyclable. The enhanced photocatalytic activity and magnetic separability revealed the potential application of NiO/MFO-4 as an efficient photocatalyst for the removal of dyes from industrial wastewater under solar light irradiation.

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“…To get maximum performance from a catalyst (NiO) at its optimum conditions, a detailed investigation has been reported as a photo nanomaterial for the dye degradation. Cu doped NiO particles, [16] facile synthesis of NiO‐ZnO−Ag nanocomposites and biosynthesized NiO particles showed improved efficiency in dye eradication from water. Synthesis of Fe doped and other transition metals doped nickel oxide particles has also been reported [17] .…”

Section: Introductionmentioning

confidence: 99%

Zn/Mn co‐doped NiO synthesized by sol‐gel route for the photocatalytic degradation of methylene blue dye

Ata,

Zaheer,

Tabassum

et al. 2023

ChemistrySelect

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This work emphasis on the synthesis of Ni0.2Mn0.02Zn0.02O nanoparticles by facile sol‐gel method. The photocatalytic activity was studied for the degradation of methylene blue (MB) dye under the UV light as a function of dye initial concentration, catalyst dose and pH of the medium. Scanning electron microscopy (SEM) and energy dispersive X‐ray (EDX) were utilized for the study of morphological and elemental composition, while XRD analysis was employed for structural study of the prepared material, which formation the phase purity and size was in 20–24 nm range. The bandgap of Zn/Mn co‐doped NiO NPs (3.24 eV) was reduced as compared to pure NiO NPs (3.43 eV). The degradation efficiency of pure NiO NPs and Zn/Mn co‐doped NiO NPs was found to be 70 % (60 min) and 94 % at optimum conditions. The dielectric properties were also studied, which were also improved in response of doping. The findings revealed that the optical and catalytic properties of Zn/Mn co‐doped NiO NPs were improved versus pure NiO NPs, which could be employed for the remediation of dyes in effluents.

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Green synthesis of NiO nanoparticles using Aloe vera gel extract and evaluation of antimicrobial activity

Cited by 36 publications

References 55 publications

New Green Approaches in Nanoparticles Synthesis: An Overview

New Green Approaches in Nanoparticles Synthesis: An Overview

NiO/MnFe₂O₄ Nanocomposite Photoluminescence, Structural, Morphological, Magnetic, and Optical Properties: Photocatalytic Removal of Cresol Red under Visible Light Irradiation

Zn/Mn co‐doped NiO synthesized by sol‐gel route for the photocatalytic degradation of methylene blue dye

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Green synthesis of NiO nanoparticles using Aloe vera gel extract and evaluation of antimicrobial activity

Cited by 36 publications

References 55 publications

New Green Approaches in Nanoparticles Synthesis: An Overview

New Green Approaches in Nanoparticles Synthesis: An Overview

NiO/MnFe2O4 Nanocomposite Photoluminescence, Structural, Morphological, Magnetic, and Optical Properties: Photocatalytic Removal of Cresol Red under Visible Light Irradiation

Zn/Mn co‐doped NiO synthesized by sol‐gel route for the photocatalytic degradation of methylene blue dye

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NiO/MnFe₂O₄ Nanocomposite Photoluminescence, Structural, Morphological, Magnetic, and Optical Properties: Photocatalytic Removal of Cresol Red under Visible Light Irradiation