The unique properties of carbon nanotubes make it very attractive for amperometric sensors. The rapid development of new nanomaterials and nanotechnology has opened up many opportunities for electrical analysis. Modification of the electrode surface by transferring mechanical modifiers is a new field that requires extensive research. This study demonstrates the expansion of electrochemical sensors based on MWCNT/RTIL/CrHCF nano composites (MWCNT/RTIL/CrHCF) modified with graphite electrodes for the detection of dopamine (DP) at 0.1 KNO3. (pH 7). The modified graphite composite electrode (GCE) is equipped with an appropriate amount of chromium deposited on the surface of MWCNT/RTIL/GCE and then hexacyanoferrate (CrHCF) is electrodeposited. Ultraviolet visible radiation, HR TEM, XRD, FTIR, EIS and CV (cyclic voltammetry) were used to examine the morphology and interface characteristics of the composite material. The modified electrode has excellent partial discharge detection performance with a linear range of 0.1 μM to 4.0 μM and a detection limit of 0.0121 nm (signal-to-noise ratio = 3). Under the best conditions, the sensor shows excellent stability and the results are satisfactory while analysing real samples.
In this present work, MgO nanoparticles have been successfully synthesized by using Tribulus Terrestris leaf extract and were characterized by UV-Vis spectrophotometer. Dispersity and surface morphology were analyzed by dynamic light scattering and scanning electron microscope (SEM). Crystal nature and purity of the MgO nanoparticles were analyzed using X-ray diffraction analysis (XRD) and energy dispersive X-ray analysis (EDAX). FTIR analysis showed functional groups present in the phytochemicals of Tribulus Terrestris plant extract responsible for reduction and stabilization of MgO nanoparticles. The sonocatalytic efficiency of MgO nanoparticles was examined by degrading Alizarin Red S (ARS) under ultrasonic sound irradiation. Green synthesized MgO nanoparticles effectively degraded the dye nearly 95% within 5 hrs. of exposer time.
The novel synthesis of pyrimidine derivatives (1a-f) by using green chemistry technique with laccase
as an enzyme catalyst. FT-IR, 1H NMR, and elemental analyses were used to describe the produced
compounds (1a-f). Antibacterial, antifungal, and molecular docking investigations to characterize the
produced pyrimidine derivatives (1a-f). In antibacterial testing, compound 1e, showed considerable
action towards E. coli (MIC 02 μg/mL) as associated to ciprofloxacin (MIC 04 μg/mL). When related
to clotrimazole in antifungal assessment, compound 1d was shown to be significant activity towards
C. albicans (MIC 0.25 μg/mL) than clotrimazole (MIC 0.5 μg/mL). Molecular docking experiments
further indicate that compound 1e inhibited antibacterial and compound 1d inhibited antifungal proteins
more effectively than the control compounds ciprofloxacin and clotrimazole.
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