Optimization of photocatalyst ZnO and Cu integrated zno nanoflower structure by anodization and electrodeposition as antibacterial agent against biofilms / Nur Syuhada Mohd Haeizar

Biofilms are resilient bacterial communities posing significant health challenges. The integration of nanomaterials offers a promising way for combating bacterial biofilms. Metal oxide nanoparticles (NPs) and their nanocomposites have exhibited remarkable antimicrobial properties. This study explore...

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Main Author:	Mohd Haeizar, Nur Syuhada
Format:	Thesis
Language:	English
Published:	2024
Subjects:	Actinobacteria
Online Access:	https://ir.uitm.edu.my/id/eprint/107749/1/107749.pdf
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id	my-uitm-ir.107749
record_format	uketd_dc
spelling	my-uitm-ir.1077492024-12-11T04:53:53Z Optimization of photocatalyst ZnO and Cu integrated zno nanoflower structure by anodization and electrodeposition as antibacterial agent against biofilms / Nur Syuhada Mohd Haeizar 2024 Mohd Haeizar, Nur Syuhada Actinobacteria Biofilms are resilient bacterial communities posing significant health challenges. The integration of nanomaterials offers a promising way for combating bacterial biofilms. Metal oxide nanoparticles (NPs) and their nanocomposites have exhibited remarkable antimicrobial properties. This study explores the development of Cu-doped ZnO nanoflowers (Cu/ZnO NFs) as a promising strategy to combat bacterial biofilms. The aimed is to optimize the synthesis parameters of ZnO NFs using electrochemical anodization and investigate the effect of Cu nanoparticle (NPs) incorporation via electrodeposition on their photocatalytic and antibacterial properties. ZnO NFs were synthesized using different electrolyte concentrations, anodization times, and applied potentials. Cu NPs were then incorporated by varying the copper nitrate concentration and deposition time to control the density of Cu NPs coverage onto the surface of ZnO NFs. X-ray diffraction (XRD), Field-Emission Scanning Electron Microscope (FESEM) and Diffuse Reflectance Spectra (DRS) characterized the structure, morphology, and optical properties. Antibacterial activity against various bacterial strains was assessed through disc diffusion and semi quantitative adherence assay. The optimal ZnO NFs were obtained using a 50 mM sodium bicarbonate solution, 10 minutes anodization for 10 V, exhibiting uniform morphology, high crystallinity, and a low band gap. Cu/ZnO NFs with Cu NPs deposited at 6 mM copper nitrate for 120 seconds showed enhanced light absorption in the visible range and potentially reduced electron-hole recombination. Both ZnO NFs and Cu/ZnO NFs displayed good antibacterial activity, particularly against initial biofilm formation, likely through reactive oxygen species (ROS) generation. 2024 Thesis https://ir.uitm.edu.my/id/eprint/107749/ https://ir.uitm.edu.my/id/eprint/107749/1/107749.pdf text en public masters Universiti Teknologi MARA (UiTM) Faculty of Applied Sciences Mahat, Annie Maria
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
advisor	Mahat, Annie Maria
topic	Actinobacteria
spellingShingle	Actinobacteria Mohd Haeizar, Nur Syuhada Optimization of photocatalyst ZnO and Cu integrated zno nanoflower structure by anodization and electrodeposition as antibacterial agent against biofilms / Nur Syuhada Mohd Haeizar
description	Biofilms are resilient bacterial communities posing significant health challenges. The integration of nanomaterials offers a promising way for combating bacterial biofilms. Metal oxide nanoparticles (NPs) and their nanocomposites have exhibited remarkable antimicrobial properties. This study explores the development of Cu-doped ZnO nanoflowers (Cu/ZnO NFs) as a promising strategy to combat bacterial biofilms. The aimed is to optimize the synthesis parameters of ZnO NFs using electrochemical anodization and investigate the effect of Cu nanoparticle (NPs) incorporation via electrodeposition on their photocatalytic and antibacterial properties. ZnO NFs were synthesized using different electrolyte concentrations, anodization times, and applied potentials. Cu NPs were then incorporated by varying the copper nitrate concentration and deposition time to control the density of Cu NPs coverage onto the surface of ZnO NFs. X-ray diffraction (XRD), Field-Emission Scanning Electron Microscope (FESEM) and Diffuse Reflectance Spectra (DRS) characterized the structure, morphology, and optical properties. Antibacterial activity against various bacterial strains was assessed through disc diffusion and semi quantitative adherence assay. The optimal ZnO NFs were obtained using a 50 mM sodium bicarbonate solution, 10 minutes anodization for 10 V, exhibiting uniform morphology, high crystallinity, and a low band gap. Cu/ZnO NFs with Cu NPs deposited at 6 mM copper nitrate for 120 seconds showed enhanced light absorption in the visible range and potentially reduced electron-hole recombination. Both ZnO NFs and Cu/ZnO NFs displayed good antibacterial activity, particularly against initial biofilm formation, likely through reactive oxygen species (ROS) generation.
format	Thesis
qualification_level	Master's degree
author	Mohd Haeizar, Nur Syuhada
author_facet	Mohd Haeizar, Nur Syuhada
author_sort	Mohd Haeizar, Nur Syuhada
title	Optimization of photocatalyst ZnO and Cu integrated zno nanoflower structure by anodization and electrodeposition as antibacterial agent against biofilms / Nur Syuhada Mohd Haeizar
title_short	Optimization of photocatalyst ZnO and Cu integrated zno nanoflower structure by anodization and electrodeposition as antibacterial agent against biofilms / Nur Syuhada Mohd Haeizar
title_full	Optimization of photocatalyst ZnO and Cu integrated zno nanoflower structure by anodization and electrodeposition as antibacterial agent against biofilms / Nur Syuhada Mohd Haeizar
title_fullStr	Optimization of photocatalyst ZnO and Cu integrated zno nanoflower structure by anodization and electrodeposition as antibacterial agent against biofilms / Nur Syuhada Mohd Haeizar
title_full_unstemmed	Optimization of photocatalyst ZnO and Cu integrated zno nanoflower structure by anodization and electrodeposition as antibacterial agent against biofilms / Nur Syuhada Mohd Haeizar
title_sort	optimization of photocatalyst zno and cu integrated zno nanoflower structure by anodization and electrodeposition as antibacterial agent against biofilms / nur syuhada mohd haeizar
granting_institution	Universiti Teknologi MARA (UiTM)
granting_department	Faculty of Applied Sciences
publishDate	2024
url	https://ir.uitm.edu.my/id/eprint/107749/1/107749.pdf
_version_	1818588231928643584

Optimization of photocatalyst ZnO and Cu integrated zno nanoflower structure by anodization and electrodeposition as antibacterial agent against biofilms / Nur Syuhada Mohd Haeizar

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