Electrochemical synthesis, photodegradation and antibacterial properties of PEG capped zinc oxide nanoparticles
- Title
- Electrochemical synthesis, photodegradation and antibacterial properties of PEG capped zinc oxide nanoparticles
- Creator
- Jose A.; Sunaja Devi K.R.; Pinheiro D.; Lakshmi Narayana S.
- Description
- The effect of surfactant and dopant on the properties of zinc oxide nanoparticles were studied by preparing polyethylene glycol (PEG) capped ZnO and tungsten doped PEG capped ZnO nanoparticles via the electrochemical method. These nanoparticles were characterized using X-Ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), Ultraviolet Diffuse Reflection Spectroscopy (UV-DRS), Scanning Electron Microscopy (SEM) and Electron Dispersive Analysis of X Rays (EDAX). The photocatalytic degradation of malachite green dye using these nanoparticles was studied under visible light. The effects of various reaction parameters like dye concentration, catalyst concentration, pH and time were studied to optimize the photodegradation reaction. Reusability of these nanoparticles was studied and no significant change was observed in the degradation efficiency of PEG capped ZnO till the fourth cycle, while there was a gradual decrease in the degradation efficiency of tungsten doped PEG capped ZnO. Langmuir- Hinshelwood kinetic model well describes the photodegradation capacity and the degradation of malachite green follows pseudo-first order kinetics.Photocatalytic studies reveal that PEG capping increases the degradation properties of ZnO while tungsten doping decreases the extent of PEG capping and has a detrimental effect on the degradation properties of ZnO. The prepared nanoparticles exhibit significant antibacterial properties against gram-positive Bacillus cereus and gram-negative Escherichia coli bacterial strains by agar well diffusion method. 2018 Elsevier B.V.
- Source
- Journal of Photochemistry and Photobiology B: Biology, Vol-187, pp. 25-34.
- Date
- 2018-01-01
- Publisher
- Elsevier B.V.
- Subject
- Antibacterial studies; Electrochemical synthesis; PEG capped ZnO; Photodegradation; ZnO
- Coverage
- Jose A., Department of Chemistry, Christ University, Hosur Road, Bengaluru, 560029, Karnataka, India; Sunaja Devi K.R., Department of Chemistry, Christ University, Hosur Road, Bengaluru, 560029, Karnataka, India; Pinheiro D., Department of Chemistry, Christ University, Hosur Road, Bengaluru, 560029, Karnataka, India; Lakshmi Narayana S., Department of LifeScience, Christ University, Bengaluru, 560074, Karnataka, India
- Rights
- Restricted Access
- Relation
- ISSN: 10111344; PubMed ID: 30096540; CODEN: JPPBE
- Format
- Online
- Language
- English
- Type
- Article
Collection
Citation
Jose A.; Sunaja Devi K.R.; Pinheiro D.; Lakshmi Narayana S., “Electrochemical synthesis, photodegradation and antibacterial properties of PEG capped zinc oxide nanoparticles,” CHRIST (Deemed To Be University) Institutional Repository, accessed February 24, 2025, https://archives.christuniversity.in/items/show/16876.