Structural and Optical Properties of ZnO-CdO Nanocomposite Using Electrodeposition Method

Abdul-Ameer, Zehraa N.; Agool, Ibrahim R.

doi:10.18052/www.scipress.com/ilcpa.63.127

Cited by 6 publications

(4 citation statements)

References 15 publications

(2 reference statements)

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“…6a-c. The derived values of bandgap energy are 2.27 eV, 3.16 eV for CdO-ESM nanopowders and ZnO-ESM nanopowders, and 2.90 eV for CdO/ZnO-ESM nanocomposites [13,19].…”

Section: Cdo/zno-esm Nanocompositesmentioning

confidence: 90%

Cadmium Oxide-Zinc Oxide Nanocomposites Synthesized Using Waste Eggshell Membrane and Its In-Vitro Assessments of the Antimicrobial Activities and Minimum Inhibitory Concentration

Selvam

Chinnadurai

Dhinagaran

et al. 2020

J Inorg Organomet Polym

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The following study was performed chiefly to analyze the antimicrobial activity of CdO/ZnO-ESM nanocomposites. A unique method was used for the synthesis of CdO/ZnO-ESM nanocomposites using an eggshell membrane as a bio-template which acts as both reducing and stabilizing agents; whereas cadmium nitrate and zinc nitrate were employed as metal precursors. The prepared samples were characterized by the following techniques such as TGA, PXRD, DRS-UV-Visible reflectance, FT-IR, HR-SEM, EDAX, Zeta potential, and Photoluminescence analysis. The prepared samples were subsequently tested for antimicrobial activity against Gram-positive bacteria (Staphylococcus aureus and Bacillus sp.) and Gram-negative bacteria (Escherichia coli, Klebsiella pneumonia, Pseudomonas aeruginosa, Salmonella enterica, and Vibrio sp.) using agar well diffusion method. The minimum inhibitory concentration was determined by the broth microdilution method. The maximum inhibition zone of 24 mm, was observed in Salmonella enterica at a concentration (30 μg/mL) of CdO/ZnO-ESM nanocomposites, while the highest MIC value was observed in Bacillus sp. at a concentration (1.95 μg/mL) of these nanocomposites. The result of this study showed that CdO/ZnO-ESM nanocomposites have an exceptional antimicrobial activity against both Gram-positive and Gram-negative bacteria.

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“…6a-c. The derived values of bandgap energy are 2.27 eV, 3.16 eV for CdO-ESM nanopowders and ZnO-ESM nanopowders, and 2.90 eV for CdO/ZnO-ESM nanocomposites [13,19].…”

Section: Cdo/zno-esm Nanocompositesmentioning

confidence: 90%

Cadmium Oxide-Zinc Oxide Nanocomposites Synthesized Using Waste Eggshell Membrane and Its In-Vitro Assessments of the Antimicrobial Activities and Minimum Inhibitory Concentration

Selvam

Chinnadurai

Dhinagaran

et al. 2020

J Inorg Organomet Polym

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show abstract

“…Crystallographic information was analyzed from XRD to study structure and morphology using Shimadzu instrument, X-ray tube with target, Cukα radiation, voltage, 40.0 (kV), current 30.0 (mA) to calculate, grain, size average (D) was determined using Scherer's equation [11,12]:…”

Section: Xrd Characteristicsmentioning

confidence: 99%

Novelty Au Nanoparticles with Different Nano Sizes as an Acidity Sensor

Abdul-Ameer¹

2021

RCMA

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The amazing wide range, applications of gold nanoparticles corresponding to excellent optical and electronic properties enhance utilization of Au NP as PH sensor. Gold nanoparticles were synthesized in simple and rapid Turkevich method to accomplish optical sensing technologies covalent or non-covalent, bonds formation causes, aggregation of the nanoparticles in the target substance. Au nanoparticles characterization was studied using XRD, UV-spectroscopy and SEM. XRD indicate polycrystalline. Nanoparticles with two different sizes according to reducing agent amount to obtain 20 30 nm. Optical energy gap was calculated for both particle size to find it (2.13) eV for 30nm particle size and (2.33) eV for 20nm.Scanning Electron Microscope showed spherical shape particles. PH test were performed to investigate efficiency of Au Np’s for PH sensor and that is found to be excellent results for both sizes with more efficiency for 30 nm due to its rough surface. Which is a fantastic tool and measurement device to test the pH of soil, food, and other puncture-worthy applications.

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“…More so, theoretical investigations reveal that the energy gap lowering was due to the strong hybridization between Y-4d and Se-4p. Nevertheless, lowering of energy gap due to Yttrium incorporation enhances the movement of free electrons to the conduction band from the valence band [37].…”

Section: Optical Studiesmentioning

confidence: 99%

Synthesis and Studies of Electro-Deposited Yttrium Arsenic Selenide Nanofilms for Opto-Electronic Applications

et al. 2020

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Nanocomposite films grown by incorporating varying concentrations of Yttrium, a d-block rare-earth ion, into the binary chalcogenide Arsenic selenide host matrix is here presented. Films were grown via the wet-chemical electro-deposition technique and characterized for structural, optical, surface morphology, and photoluminescence (PL) properties. The X-ray Diffraction (XRD) result of the host matrix (pristine film) showed films of monoclinic structure with an average grain size of 36.2 nm. The composite films, on the other hand, had both cubic YAs and tetragonal YSe structures with average size within 36.5–46.8 nm. The fairly homogeneous nano-sized films are shown by the Scanning Electron Microscopy (SEM) micrographs while the two phases of the composite films present in the XRD patterns were confirmed by the Raman shifts due to the cleavage of the As-Se host matrix and formation of new structural units. The refractive index peaked at 2.63 within 350–600 nm. The bandgap energy lies in the range of 3.84–3.95 eV with a slight decrease with increasing Y addition; while the PL spectra depict emission bands across the Vis-NIR spectral regions. Theoretically, the density functional theory (DFT) simulations provided insight into the changes induced in the structure, bonding, and electronic properties. Besides reducing the bandgap of the As2Se3, the yttrium addition has induced a lone pair p-states of Se contributing nearby to Fermi energy level. The optical constants, and structural and electronic features of the films obtained present suitable features of film for IR applications as well as in optoelectronics.

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Structural and Optical Properties of ZnO-CdO Nanocomposite Using Electrodeposition Method

Cited by 6 publications

References 15 publications

Cadmium Oxide-Zinc Oxide Nanocomposites Synthesized Using Waste Eggshell Membrane and Its In-Vitro Assessments of the Antimicrobial Activities and Minimum Inhibitory Concentration

Cadmium Oxide-Zinc Oxide Nanocomposites Synthesized Using Waste Eggshell Membrane and Its In-Vitro Assessments of the Antimicrobial Activities and Minimum Inhibitory Concentration

Novelty Au Nanoparticles with Different Nano Sizes as an Acidity Sensor

Synthesis and Studies of Electro-Deposited Yttrium Arsenic Selenide Nanofilms for Opto-Electronic Applications

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