Efficient selective 4-aminophenol sensing and antibacterial activity of ternary Ag2O3·SnO2·Cr2O3 nanoparticles. (13th June 2019)

• Record Type: Journal Article
• Authors: Subhan, Md Abdus; Jhuma, Sanjida Sultana; Chandra Saha, Pallab; Alam, M. M.; Asiri, Abdullah M.; Al-Mamun, Mohammad; Attia, Sara Aly; Emon, Tanvir Hossain; Azad, Abul Kalam; Rahman, Mohammed M.
• Is Part Of: New journal of chemistry. Volume 43:Number 26(2019)
• Page Start: 10352
• Page End: 10365
• Publication Date: 2019-06-13
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/c9nj01760g
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : The electrochemical oxidation of 4-AP based on Ag2 O3 ·SnO2 ·Cr2 O3 NPs/binder/GCE sensor. Abstract : In this study, Ag2 O3 ·SnO2 ·Cr2 O3 nanoparticles (NPs) were synthesized via a simple and quick co-precipitation method. The produced materials were characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), Fourier-transform infrared spectroscopy (FTIR), and photoluminescence (PL) spectroscopy. The hydrodynamic size and zeta potential were measured under acidic and basic pH conditions. The photocatalytic activities of the newly synthesized composite were studied considering various parameters. Antibacterial activity tests showed that Ag2 O3 ·SnO2 ·Cr2 O3 is an excellent anti-bacterial agent. A reliable electrochemical sensor probe was designed by depositing the synthesized Ag2 O3 ·SnO2 ·Cr2 O3 NPs onto the flat part of GCE, which showed excellent oxidation activity and selectivity towards 4-aminophenol (4-AP) in a phosphate buffer medium. During electrochemical analysis, the desired 4-AP sensor responded linearly over a large concentration range (0.1 nM–0.01 mM), which is known as the linear dynamic range (LDR), and exhibited appreciable sensitivity (25.1962 μA μM −1 cm −2 ). Furthermore, it showed a considerably low limit of detection (98.41 ± 4.92 pM), good reproducibility, fast response (20.0 s), and long-term stability in the phosphate buffer medium. This is an efficient method for the fabrication of a selective electrochemical sensor using the electrochemical approach for safety in environmental and healthcare fields.