Antimicrobial Activity of Photoactive Cerium Doped Zinc Oxide

Biofouling and biofilms exist as ubiquitous, undesirable accumulation of flora and fauna upon a given substrate when being immersed into an aquatic medium. Therefore, a novel antifouling based materials with the incorporation of nanotechnology has been developed for the prevention of biofouling in i...

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Veröffentlicht in:Solid state phenomena 2020-07, Vol.307, p.217-222
Hauptverfasser: Ariffin, Fazilah, Rooshde, Maishara Syazrinni, Abdullah, Wan Rafizah Wan, Amran, Amie Zaidah, Ibrahim, Noradhiha Farahin, Ghazali, Mohd Sabri Mohd
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container_end_page 222
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container_start_page 217
container_title Solid state phenomena
container_volume 307
creator Ariffin, Fazilah
Rooshde, Maishara Syazrinni
Abdullah, Wan Rafizah Wan
Amran, Amie Zaidah
Ibrahim, Noradhiha Farahin
Ghazali, Mohd Sabri Mohd
description Biofouling and biofilms exist as ubiquitous, undesirable accumulation of flora and fauna upon a given substrate when being immersed into an aquatic medium. Therefore, a novel antifouling based materials with the incorporation of nanotechnology has been developed for the prevention of biofouling in its initial stage through photocatalytic treatment. This study investigated the antimicrobial properties of photoactive Cerium (Ce) doped ZnO powder and explores its potential properties for future antifouling application. ZnO nanoparticles was doped with 0.4 mol% Ce was synthesized through the combination of modified citrate gelation technique and solid state sintering. The successful preparation of Ce doped ZnO was confirmed by XRD and SEM. The antimicrobial activity of Ce doped ZnO against E. coli and S. aureus was determined through antibacterial susceptibility test by agar well diffusion method whilst its photocatalytic inactivation efficiency against selected bacteria was analysed through photodegradation testing under UV light irradiation. The findings demonstrated that the synthesized Ce doped ZnO powder exhibited antibacterial effect against Gram-positive bacteria (S. aureus) and excellent photocatalytic efficiency to inactivate both Gram-negative (E. coli) and Gram-positive (S. aureus). 2 g/L of Ce doped ZnO catalyzed the 100% disinfection of both bacteria in 180 min of UV light exposure. Thus, this proved that Ce doped ZnO powder has the potential as efficient antifouling agent.
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subjects Antifouling
Antiinfectives and antibacterials
Antimicrobial agents
Bacteria
Biofouling
Cerium
Deactivation
E coli
Gelation
Gram-positive bacteria
Light irradiation
Nanoparticles
Nanotechnology
Photocatalysis
Photodegradation
Sintering (powder metallurgy)
Substrates
Synthesis
Ultraviolet radiation
Zinc oxide
Zinc oxides
title Antimicrobial Activity of Photoactive Cerium Doped Zinc Oxide
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