Browsing by Author "Yayla, M."

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Antimicrobial Properties of Multimetallic of Silver Compounds Immobilized on Active Carbon and Nano Carbon Tubes
(Elsevier B.V., 2021) Kazici, H.Ç.; Yönten, V.; Kivanç, M.R.; Ertas, M.; Salman, F.; Yayla, M.
In this paper, some bi- and tri-metallic silver compounds (Ag50Ni50/CNT, Ag90Ni10/CNT, Ag70Ni30/CNT, Pd10Co10Ag80/AC, Pd20Co30Ag50/AC, Pd30Co30Ag40/AC, (AC; active carbon) (CNT; carbon nanotube)) were synthesized with the polyol method. Antibacterial activities against Staphylococcus aureus ATCC 29213, Enterococcus faecalis ATCC 29212, Escherichia coli ATCC 25952, Pseudomonas aeruginosa ATCC 27853 and Bacillus cereus ATCC 29213, and antifungal activity against Candida albicans ATCC 90028 were investigated. The standard protocols were evaluated in the experimental process. The antibacterial activity assay results were correlated with the morphological characterization of the material (scanning electron microscope energy dispersive X-ray spectroscopy). It was determined that all nanomaterials (NMs) had effective antifungal activity against C. Albican fungi, but Ag70Ni30/CNT had better antifungal effects than the other NMs. Only Ag70Ni30/CNT had antibacterial activity against B. cereus and P. aeruginosa bacteria pathogens. Therefore, the relevant NMs were introduced to the literature with this feature of antifungal and antibacterial activities. © 2021
Carbon Nano Tube Assisted Triple Metal Electrode and High-Impact Electro Sensor for Preservative Detection in Food Samples
(Taylor and Francis Ltd., 2024) Yayla, M.; Çelik Kazıcı, H.; Kivrak, H.D.
In this study, the electrode surface was modified with ternary metal supported by carbon nanotubes and for this purpose, PdRuCr-based sensor was developed that determines the preservatives in different food. The surfaces electronic and chemical properties were determined by methods such as SEM-EDX (scanning electron microscopy, Energy-Emitting X-ray analysis) and XRD (X ray diffraction). The activities of the electrocatalyzers were carried out using electrochemical measurements such as cyclic voltammetry (CV) and differential pulse voltammetry (DPV) methods. The lowest limit ranges (LOD) were determined. For benzoic acid (BA) and potassium sorbate (PS), the specification limit values of the sensors were calculated as 0.82 µM (0.1 mgL−1 in ppm) and and 11.9 µM (1.78 mgL−1 in ppm) respectively. The sensitivity of the sensor was calculated as 1123,944 µA/mM.cm2 for BA and 2363,38 µA/mM.cm2 for PS and linear concentration range were determined as 2.5–200 µM for BA and 35–140 µM for PS, respectively. © 2023 Informa UK Limited, trading as Taylor & Francis Group.