Green synthesis of CaO nanoparticles conjugated with l-Methionine polymer film to modify carbon paste electrode for the sensitive detection of levofloxacin antibiotic
“…The stretching vibration of unidentate carbonate caused by the adsorption of atmospheric CO 2 is shown by the absorption peak located at approximately 1402 cm −1 [ 27 ]. Additionally, a broad adsorption band located at about 3423.99 cm −1 is related to –OH vibration due to the absorbed water molecules when the prepared sample comes into contact with the atmospheric air [ 22 , 27 ]. Fig.…”
Section: Resultsmentioning
confidence: 99%
“…The coprecipitation method was utilized to prepare Ca 2 CuO 3 powder, as described previously [ 24 ], with some modifications. In brief, the eggshell powder was prepared according to our previous work in the first step [ 22 ]. Then by considering that about 97% of eggshell waste consists of CaCO 3 [ 25 ], the appropriate weight of the resulting powder was dissolved in 100 ml HCl (1.0 M) to form CaCl 2 (1.0 M) solution.…”
Section: Methodsmentioning
confidence: 99%
“…Eggshells are a regular food waste that is generated in enormous quantities every day worldwide. The eggshell treatment is considered a cheap calcium source since CaCO 3 makes up a significant percentage of eggshell waste (more than 97%) [ 22 , 23 ]. The manufacture of Ca 2 CuO 3 NS in this study utilized eggshell waste as a natural, affordable, and biodegradable source of Ca.…”
In this work, an accurate, highly sensitive, and economical electrochemical sensor based on a carbon paste electrode modified by Ca2CuO3 nanostructure (Ca2CuO3 NS) was constructed using Eggshell waste recycling as a cheap source of calcium. The Ca2CuO3 NS was analyzed using FTIR, SEM, and XRD measurements. The synthesized nanomaterials utilized for the first time to enhance the electrocatalytic efficiency of carbon paste electrode (CPE) toward fluoroquinolones antibiotics ofloxacin (OFL) and ciprofloxacin (CIP), The drugs used to treat pneumonia caused by COVID-19. The synthesized Ca2CuO3 NS dramatically enhanced the anodic peak response of CPE toward both drugs compared to the unmodified one and other modified electrodes. The simultaneous detection of the two antibiotics was performed in the linear range of 0.09–1.0 μM for OFL and 0.05–0.8 μM for CIP with the LOD of 0.027 μM and 0.012 μM, respectively. The suggested method was applied successfully to determine OFL and CIP in real samples.
“…The stretching vibration of unidentate carbonate caused by the adsorption of atmospheric CO 2 is shown by the absorption peak located at approximately 1402 cm −1 [ 27 ]. Additionally, a broad adsorption band located at about 3423.99 cm −1 is related to –OH vibration due to the absorbed water molecules when the prepared sample comes into contact with the atmospheric air [ 22 , 27 ]. Fig.…”
Section: Resultsmentioning
confidence: 99%
“…The coprecipitation method was utilized to prepare Ca 2 CuO 3 powder, as described previously [ 24 ], with some modifications. In brief, the eggshell powder was prepared according to our previous work in the first step [ 22 ]. Then by considering that about 97% of eggshell waste consists of CaCO 3 [ 25 ], the appropriate weight of the resulting powder was dissolved in 100 ml HCl (1.0 M) to form CaCl 2 (1.0 M) solution.…”
Section: Methodsmentioning
confidence: 99%
“…Eggshells are a regular food waste that is generated in enormous quantities every day worldwide. The eggshell treatment is considered a cheap calcium source since CaCO 3 makes up a significant percentage of eggshell waste (more than 97%) [ 22 , 23 ]. The manufacture of Ca 2 CuO 3 NS in this study utilized eggshell waste as a natural, affordable, and biodegradable source of Ca.…”
In this work, an accurate, highly sensitive, and economical electrochemical sensor based on a carbon paste electrode modified by Ca2CuO3 nanostructure (Ca2CuO3 NS) was constructed using Eggshell waste recycling as a cheap source of calcium. The Ca2CuO3 NS was analyzed using FTIR, SEM, and XRD measurements. The synthesized nanomaterials utilized for the first time to enhance the electrocatalytic efficiency of carbon paste electrode (CPE) toward fluoroquinolones antibiotics ofloxacin (OFL) and ciprofloxacin (CIP), The drugs used to treat pneumonia caused by COVID-19. The synthesized Ca2CuO3 NS dramatically enhanced the anodic peak response of CPE toward both drugs compared to the unmodified one and other modified electrodes. The simultaneous detection of the two antibiotics was performed in the linear range of 0.09–1.0 μM for OFL and 0.05–0.8 μM for CIP with the LOD of 0.027 μM and 0.012 μM, respectively. The suggested method was applied successfully to determine OFL and CIP in real samples.
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