Cadmium oxides Research Papers - Academia.edu (original) (raw)

Electrochemical water splitting is one of the promising ways to enhance energy with less outflow. In this regard different electrocatalysts have been reported for Oxygen evolution reaction (OER) to get alternative of noble metal based electrocatalysts. In this work, we have introduced Cadmium-oxide/Cobalt-oxide (CdO/Co3O4) nanocomposite by co-precipitation chemical strategy with impressive OER performance in alkaline medium. Almost 310 mV overpotential value is required to achieve 10 mA/cm2 current density with Tafel slope value of 62 mV/Dec. The as synthesized nanocomposite has stability of 6h as its longer electrochemical performance.

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- Electrochemistry, Cobalt Oxide, Electrocatalyst, Oxygen evolution reaction

Background: Inorganic antibacterial factors have bacterial resistance and high thermal stability. Inorganic
nanomaterials which have new structures with biological, chemical and physical properties have been made
since their applications due to their nano size. In this study, the antibacterial effect of cadmium oxide
nanoparticles on Staphylococcus aureus and Pseudomonas aeruginosa bacteria was investigated.
Materials and Methods: The different concentrations (10 μg/ml, 15 μg/ml and 20 μg/ml) of cadmium oxide
nanoparticles were prepared and their effects were studied against considered bacteria in both solid and
liquid media.
Results: The results showed that there is a direct relationship between inhibitory effect and amount of
consumer dose of nanoparticles. Furthermore, it was observed that antibacterial properties of cadmium oxide
nanoparticles on activity and growth of Staphylococcus aureus was more effective than Pseudomonas aeruginosa.
Conclusion: This study showed that antibacterial effects of cadmium oxide nanoparticles on positive gram bacteria
are stronger than negative gram bacteria and antibacterial effects of cdo nanoparticles against both bacteria,
but Staphylococcus aureus bacteria were more sensitive to nanoparticles as compared to Pseudomonas aeruginosa.

- by Dr. Bahare Salehi
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- Microbiology, Nanoparticles, Nanotechnology, Nanoscience

Highly sensitive and selective detection of volatile organic compounds (VOCs) with fast response time is imperative based on safety requirements, yet often remains a challenge. Herein, we propose an effective solution, preparing a novel gas sensor comprised of amorphous nanoflake arrays (a-NFAs) with specific surface groups. The sensor was produced via an extremely simple process in which a-NFAs of CdO were deposited directly onto an interdigital electrode immersed in a chemical bath under ambient conditions. Upon exposure to a widely used VOC, diethyl ether (DEE), the sensor exhibits excellent performance, more specifically, the quickest response, lowest detection limit and highest selectivity ever reported for DEE as a target gas. The superior gas-sensing properties of the prepared a-NFAs are found to arise from their open trumpet-shaped morphology, defect-rich amorphous nature, and surface C]O groups.

- by Sergei Kulinich
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- Gas sensing, Chemical Bath Deposition Method, Nanoflakes, Cadmium oxides

For many centuries, the metals are used as the antibacterial factors. Whereas, the nanoparticles are mostly heavy metal oxides, they have a high tendency to interact with biological molecules and develop the deactivation or elimination of the virus or bacteria. In the present study, the antibacterial effect of Cadmium Oxide nanoparticles on Pseudomonas Aeruginosa bacteria was analyzed which are considered some sort of resistant bacteria against antibiotics now. The aim of his study was to investigate the antibacterial properties of onekind of nno-specimen (cdo) against Pseudomonas Aeruginosa. Our study was research perusal. In the first study, the optical density of Pseudomonas Aeruginosa culture was observed in the presence of 5, 10, 15µg/ml. in the scond study, 600nm of Pseudomonas Aeruginosa was separately exposed to nanoparticles at 37° c in water. In third study, we studied thew growth of Pseudomonas Aeruginosa in solid medium with and without nanoparticles. The results represented that there is a direct relation between the nanoparticles applied dosage and the restrain effect-augmentation of applied dosage results in restrain effect increase. In the study of environmental factors (pH and temperature), the results are in line with the inherent physiology of the bacteria, however, there was a significant decline in the number of analyzed bacteria cells due to the Double Effect of nanoparticle-pH variations as well as nanoparticle-temperature variations. In the present study, enhancement in

We obtain a single cadmium oxide phase from powder synthesized by a thermal decomposition method of cadmium acetate dehydrate. The yielded powder is annealed in air, vacuum, and H 2 gas in order to create point defects. Magnetization-field curves reveal the appearance of diamagnetic behavior with a ferromagnetic component for all the powders. Powder annealing under vacuum and H 2 atmosphere leads to a saturation magnetization 1.15 memu g À1 and 1.2 memu g À1 respectively with an increase by 45% and 16% compared to the one annealed in air. We show that annealing in vacuum produces mainly oxygen vacancies while annealing in H 2 gas creates mainly Cd vacancy leading to room temperature ferromagnetic (RTFM) component together with known diamagnetic properties. Ab initio calculations performed on the CdO nanoparticles show that the magnetism is governed by polarized hybrid states of the Cd d and O p orbitals together with the vacancy.