Green Zinc Oxide-based Photocatalysts: Preparation, Characterization And Photocatalytic Study For The Degradation Of Dyes Under Visible Light Irradiation

Green Zinc Oxide-based Photocatalysts: Preparation, Characterization And Photocatalytic Study For The Degradation Of Dyes Under Visible Light Irradiation

There is a scarcity of literature on the fabrication of zinc oxide (ZnO) photocatalyst using a greener biosynthetic route and bio-based materials, with a primary focus on improving the reusability, collection, and recovery of the photocatalyst. Besides, ZnO suffers from low photodegradation efficien...

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Main Author: Abdullah, Fatin Hazirah
Format: Thesis
Language:English
Published: 2023
Subjects:
QD1-999 Chemistry
Online Access:http://eprints.usm.my/60381/1/FATIN%20HAZIRAH%20BINTI%20ABDULLAH%20-%20TESIS24.pdf
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spelling my-usm-ep.603812024-04-17T08:14:36Z Green Zinc Oxide-based Photocatalysts: Preparation, Characterization And Photocatalytic Study For The Degradation Of Dyes Under Visible Light Irradiation 2023-08 Abdullah, Fatin Hazirah QD1-999 Chemistry There is a scarcity of literature on the fabrication of zinc oxide (ZnO) photocatalyst using a greener biosynthetic route and bio-based materials, with a primary focus on improving the reusability, collection, and recovery of the photocatalyst. Besides, ZnO suffers from low photodegradation efficiency due to low visible light absorption and high recombination of photogenerated charge carriers. In this study, green ZnO-based photocatalysts were successfully synthesized at room temperature using environmentally friendly, low cost, and facile methods. The work highlights the combination of valorization of banana peel (BP) waste and natural rubber (NR) biopolymer to develop effective, economic, and sustainable photocatalysts with good reusability for high removal of dyes. The photoactivity of these photocatalysts were evaluated by the degradation of Methylene Blue (MB) dye under visible light irradiation. The ZnO nanoparticles were initially synthesized using BP extract as reducing and capping agents. The best conditions for green synthesis of ZnO were pH 12, 1 mL BP extract, 0.02 M zinc acetate dihydrate, 3 h synthesis time, and 60 °C temperature. The biosynthesized ZnO exhibited advanced properties and superior photocatalytic performance than the chemically synthesized ZnO, which was prepared for comparison purposes. 2023-08 Thesis http://eprints.usm.my/60381/ http://eprints.usm.my/60381/1/FATIN%20HAZIRAH%20BINTI%20ABDULLAH%20-%20TESIS24.pdf application/pdf en public phd doctoral Universiti Sains Malaysia Pusat Pengajian Sains Kimia
institution Universiti Sains Malaysia
collection USM Institutional Repository
language English
topic QD1-999 Chemistry
spellingShingle QD1-999 Chemistry
Abdullah, Fatin Hazirah
Green Zinc Oxide-based Photocatalysts: Preparation, Characterization And Photocatalytic Study For The Degradation Of Dyes Under Visible Light Irradiation
description There is a scarcity of literature on the fabrication of zinc oxide (ZnO) photocatalyst using a greener biosynthetic route and bio-based materials, with a primary focus on improving the reusability, collection, and recovery of the photocatalyst. Besides, ZnO suffers from low photodegradation efficiency due to low visible light absorption and high recombination of photogenerated charge carriers. In this study, green ZnO-based photocatalysts were successfully synthesized at room temperature using environmentally friendly, low cost, and facile methods. The work highlights the combination of valorization of banana peel (BP) waste and natural rubber (NR) biopolymer to develop effective, economic, and sustainable photocatalysts with good reusability for high removal of dyes. The photoactivity of these photocatalysts were evaluated by the degradation of Methylene Blue (MB) dye under visible light irradiation. The ZnO nanoparticles were initially synthesized using BP extract as reducing and capping agents. The best conditions for green synthesis of ZnO were pH 12, 1 mL BP extract, 0.02 M zinc acetate dihydrate, 3 h synthesis time, and 60 °C temperature. The biosynthesized ZnO exhibited advanced properties and superior photocatalytic performance than the chemically synthesized ZnO, which was prepared for comparison purposes.
format Thesis
qualification_name Doctor of Philosophy (PhD.)
qualification_level Doctorate
author Abdullah, Fatin Hazirah
author_facet Abdullah, Fatin Hazirah
author_sort Abdullah, Fatin Hazirah
title Green Zinc Oxide-based Photocatalysts: Preparation, Characterization And Photocatalytic Study For The Degradation Of Dyes Under Visible Light Irradiation
title_short Green Zinc Oxide-based Photocatalysts: Preparation, Characterization And Photocatalytic Study For The Degradation Of Dyes Under Visible Light Irradiation
title_full Green Zinc Oxide-based Photocatalysts: Preparation, Characterization And Photocatalytic Study For The Degradation Of Dyes Under Visible Light Irradiation
title_fullStr Green Zinc Oxide-based Photocatalysts: Preparation, Characterization And Photocatalytic Study For The Degradation Of Dyes Under Visible Light Irradiation
title_full_unstemmed Green Zinc Oxide-based Photocatalysts: Preparation, Characterization And Photocatalytic Study For The Degradation Of Dyes Under Visible Light Irradiation
title_sort green zinc oxide-based photocatalysts: preparation, characterization and photocatalytic study for the degradation of dyes under visible light irradiation
granting_institution Universiti Sains Malaysia
granting_department Pusat Pengajian Sains Kimia
publishDate 2023
url http://eprints.usm.my/60381/1/FATIN%20HAZIRAH%20BINTI%20ABDULLAH%20-%20TESIS24.pdf
_version_ 1804888926371971072

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