Facile Synthesis of Quasi Spherical ZnO Nanoparticles with Excellent Photocatalytic Activity

Pudukudy, Manoj; Yaakob, Zahira

doi:10.1007/s10876-014-0806-1

Cited by 179 publications

(61 citation statements)

References 58 publications

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“…: 36-1451) (Ekennia et al 2020). The lattice parameters 'a' and 'c' were computed as 3.269 Å and 5.2092 Å, respectively, which matched with the literature (Pudukudy and Yaakob 2015). The ratio of the lattice parameters "c/a" was equal to 1.594 which matched well with the ZnONPs synthesized using the flower extract of Aspalathus linearis (Diallo et al 2015).…”

Section: Xrd Studiessupporting

confidence: 74%

Synthesis of photocatalytic zinc oxide nanoflowers using Peltophorum pterocarpum pod extract and their characterization

et al. 2021

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Zinc oxide nanoflowers (ZnONFs) were prepared by employing the pod extract of Peltophorum pterocarpum as a green resource and characterized by various methods. UV–vis spectrum displayed a peak at 361 nm which confirmed the formation of ZnO nanoparticles. The optical band gap was calculated as 3.43 eV. FE-SEM images exposed the flower-like morphology and EDX portrayed strong signals for Zn and O. XRD studies substantiated signature peaks for the wurtzite phase of ZnONFs and the lattice parameters matched well with the literature. Mesoporous nature was confirmed by BET analysis which yielded a high specific surface area of 19.61 m2/g. FTIR bands at 420.48 and 462.92 cm−1affirmed the Zn and O bonding vibrations. The photocatalytic potential of the ZnONFs was successfully examined for the removal of methylene blue dye under natural solar light. The experimental data were fitted to Langmuir–Hinshelwood’s first-order equation and the kinetic constant was calculated as 0.0114 min–1.

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Section: Xrd Studiessupporting

confidence: 74%

Synthesis of photocatalytic zinc oxide nanoflowers using Peltophorum pterocarpum pod extract and their characterization

et al. 2021

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“…For PDDA (Figure 4b), the band ascribable to ZnO showed a slight red shift from 374 nm to 382 nm with the increase in the treatment temperature, which could be related to a nanostructure size increase (a phenomenon generally reported in the literature) [14]. Broad absorption at higher wavelengths is attributed in the literature to crystal defects, especially oxygen vacancies in the sample [34]. In the case of BAC (Figure 3a), IR data indicate that ZnO is already present in the 120 °C -dried samples, as highlighted by the characteristic IR band at 440-500 cm −1 attributed to the Zn-O stretching [22]; the conversion of Zn(II) species into stoichiometric ZnO is complete with calcination at 450 °C .…”

Section: Ftir and Uv-vis Characterizationsmentioning

confidence: 53%

Section: Ftir and Uv-vis Characterizationsmentioning

confidence: 54%

ZnO Nanostructures with Antibacterial Properties Prepared by a Green Electrochemical-Thermal Approach

et al. 2020

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Zinc oxide (ZnO) nanostructures are widely applied materials, and are also capable of antimicrobial action. They can be obtained by several methods, which include physical and chemical approaches. Considering the recent rise of green and low-cost synthetic routes for nanomaterial development, electrochemical techniques represent a valid alternative to biogenic synthesis. Following a hybrid electrochemical-thermal method modified by our group, here we report on the aqueous electrosynthesis of ZnO nanomaterials based on the use of alternative stabilizers. We tested both benzyl-hexadecyl-dimetylammonium chloride (BAC) and poly-diallyl-(dimethylammonium) chloride (PDDA). Transmission electron microscopy images showed the formation of rod-like and flower-like structures with a variable aspect-ratio. The combination of UV–Vis, FTIR and XPS spectroscopies allowed for the univocal assessment of the material composition as a function of different thermal treatments. In fact, the latter guaranteed the complete conversion of the as-prepared colloidal materials into stoichiometric ZnO species without excessive morphological modification. The antimicrobial efficacy of both materials was tested against Bacillus subtilis as a Gram-positive model microorganism.

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“…Pudukudy et al synthesized ZnO structures by various methods (thermal decomposition, surfactant-assisted precipitation-hydrothermal treatment, and solid-state calcination) and investigated the photocatalytic activity of the resulting materials against methylene blue solution. [27][28][29][30][31][32] Balcha et al synthesized ZnO powders by precipitation and a sol-gel method, and investigated their photocatalytic activity against methylene blue solution. 33 In an alternative method, thermal oxidation was conducted by Atchudan et al ZnO nanoparticle decorated graphene oxide composites were prepared by solvothermal impregnation for the degradation of MB solution.…”

Section: Introductionmentioning

confidence: 99%

Enhanced bactericidal and photocatalytic activities of ZnO nanostructures by changing the cooling route

Horzum

Işık

2018

New J. Chem.

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Facile Synthesis of Quasi Spherical ZnO Nanoparticles with Excellent Photocatalytic Activity

Cited by 179 publications

References 58 publications

Synthesis of photocatalytic zinc oxide nanoflowers using Peltophorum pterocarpum pod extract and their characterization

Synthesis of photocatalytic zinc oxide nanoflowers using Peltophorum pterocarpum pod extract and their characterization

ZnO Nanostructures with Antibacterial Properties Prepared by a Green Electrochemical-Thermal Approach

Enhanced bactericidal and photocatalytic activities of ZnO nanostructures by changing the cooling route

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