Probing the impact of Ba on properties of ZnO at the nanoscale: optical, dielectric and antibacterial activity evolution

Abstract

The sol-gel dip coating technique was used to manufacture undoped and Barium doped zinc oxide thin films. Doping is extensively used to refine semiconductor properties. Without and with varying ratios of Ba 1-9 wt.% dopant, ZnO thin films have been manufactured. The effect of Ba on the dielectric, structural, antibacterial, optical and morphological characteristics of ZnO was investigated. The optical properties demonstrate that the bandgap of the pure ZnO thin film is higher than that of Ba-doped ZnO films, which is beneficial for improving solar cell performance. According to the XRD data, all films of ZnO have hexagonal wurtzite structures According to XRD structural analysis; the incorporation of Ba lowers the crystallinity of ZnO thin films by reducing the crystallite size. The Ba doping changes the surface roughness and morphology. The hopping process defines the dielectric characteristics that follow Koop’s theory as well as the Maxwell-Wagner model. A lower dielectric constant makes it ideal for high-frequency devices. These films exhibit ferromagnetism. Barium-doped zinc oxide photocatalyst could successfully decompose methylene blue dye by making it suitable for wastewater treatment.Ba doping effectively kills both gram-negative and gram-positive bacteria. They have antimicrobial applications in the food industry and biomedicine.

Triggering Redox Active Sites Through Electronic Structure Modulation in rGO Encapsulated Mixed Transition Metal Oxides Hybrid for Alkaline Hydrogen Evolution

“…The peaks at 1002 and 1095 cm –1 are due to OH bending vibrations combined with Mn atoms. The small broad vibrational band around 3400 cm –1 is ascribed to the stretching vibration of OH functionalities by absorbed H 2 O/Moisture The peaks at 1086 and 735 cm –1 are attributed to the O–Mn–O bonds of MnO 2 . These results indicate that the MnO 2 nanoparticles are enriched with hydroxyl groups, which initiates further functionalization.…”

“…The peaks at 1002 and 1095 cm −1 are due to OH bending vibrations combined with Mn atoms. The small broad vibrational band around 3400 cm −1 is ascribed to the stretching vibration of OH functionalities by absorbed H 2 O/Moisture 35 The peaks at 1086 and 735 cm The Raman spectra of samples are shown in Figure S3. The Raman spectra of graphitic materials deal with D and G peaks and their overtones, providing insight into the defects and disorders within the structure.…”

Effects of nanomagnesia and polypropylene-graft-maleic anhydride on the dielectric breakdown properties of polypropylene/ethylene propylene diene monomer blend

“…Meanwhile, the emergence of nanotechnology in polymer dielectrics has shown the potential of nanostructuration in improving the dielectric properties of polymers [12,13]. Specifically, nylon-nanoclay nanocomposites were investigated and promising results, including enhanced thermal and mechanical characteristics were reported [14].…”