Novel Copper-Zinc-Manganese Ternary Metal Oxide Nanocomposite as Heterogeneous Catalyst for Glucose Sensor and Antibacterial Activity

• Published in: Antioxidants Vol. 11; no. 6; p. 1064
• Main Authors: Alam, Mir Waqas, Al Qahtani, Hassan S, Souayeh, Basma, Ahmed, Waqar, Albalawi, Hind, Farhan, Mohd, Abuzir, Alaaedeen, Naeem, Sumaira
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 27.05.2022; MDPI
• Subjects: absorption; Antibacterial activity; Antibacterial agents; Antioxidants; Carbon; Catalysts; Chemical properties; Chemoreception; Copper; Copper oxide; Crystals; Cuprite; Diabetes; Differential scanning calorimetry; Electrodes; Food products; Fourier analysis; Glucose; Graphene; Health aspects; Heavy metals; Infrared spectroscopy; Manganese; Materials; Metal oxides; Methylene blue; Nanocomposites; Nanomaterials; Nanoparticles; Nanowires; Nitrates; Particle size; Photocatalysis; Photoelectron spectroscopy; Pollutants; Quantum dots; Scanning electron microscopy; sensor; Sensors; Silver; Technology application; Thermal stability; Transmission electron microscopy; trimetal oxide; Zeta potential; Zinc oxide; Zinc oxides; Saudi Arabia; United States > US; Japan
• ISSN: 2076-3921; 2076-3921
• DOI: 10.3390/antiox11061064

A novel copper-zinc-manganese trimetal oxide nanocomposite was synthesized by the simple co-precipitation method for sensing glucose and methylene blue degradation. The absorption maximum was found by ultraviolet–visible spectroscopy (UV-Vis) analysis, and the bandgap was 4.32 eV. The formation of a bond between metal and oxygen was confirmed by Fourier Transform Infrared Spectroscopy (FT-IR) analysis. The average crystallite size was calculated as 17.31 nm by X-ray powder diffraction (XRD) analysis. The morphology was observed as spherical by scanning electron microscope (SEM) and high-resolution transmission electron microscopy (HR-TEM) analysis. The elemental composition was determined by Energy Dispersive X-ray Analysis (EDAX) analysis. The oxidation state of the metals present in the nanocomposites was confirmed by the X-ray photoelectron spectroscopy (XPS) analysis. The hydrodynamic diameter and zeta potential of the nanocomposite were 218 nm and −46.8 eV, respectively. The thermal stability of the nanocomposite was analyzed by thermogravimetry-differential scanning calorimetry (TG-DSC) analysis. The synthesized nanocomposite was evaluated for the electrochemical glucose sensor. The nanocomposite shows 87.47% of degradation ability against methylene blue dye at a 50 µM concentration. The trimetal oxide nanocomposite shows potent activity against Escherichia coli. In addition to that, the prepared nanocomposite shows strong antioxidant application where scavenging activity was observed to be 76.58 ± 0.30, 76.89 ± 0.44, 81.41 ± 30, 82.58 ± 0.32, and 84.36 ± 0.09 % at 31, 62, 125, 250, and 500 µg/mL, respectively. The results confirm the antioxidant potency of nanoparticles (NPs) was concentration dependent.