Photocatalytic degradation of methyl green dye by nitrogen-doped carbon quantum dots: Optimisation study by Taguchi approach

Photocatalytic degradation of methyl green dye by nitrogen-doped carbon quantum dots: Optimisation study by Taguchi approach

Empty fruit bunches (EFB) biomass can be a sustainable source for the fabrication of nitrogen-doped carbon quantum dots (NCQDs) through hydrothermal treatment. However, the performance and stability of NCQDs produced for methyl green (MG) photocatalysis are yet to be evaluated. This study discusses...

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Published in:Materials Science and Engineering: B
Main Author: Abd Rani U.; Ng L.Y.; Ng Y.S.; Ng C.Y.; Ong Y.H.; Lim Y.P.
Format: Article
Language:English
Published: Elsevier Ltd 2022
Online Access:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85131966389&doi=10.1016%2fj.mseb.2022.115820&partnerID=40&md5=13a12dfac44e4675239cf611f51b1b57
id 2-s2.0-85131966389
spelling 2-s2.0-85131966389
Abd Rani U.; Ng L.Y.; Ng Y.S.; Ng C.Y.; Ong Y.H.; Lim Y.P.
Photocatalytic degradation of methyl green dye by nitrogen-doped carbon quantum dots: Optimisation study by Taguchi approach
2022
Materials Science and Engineering: B
283

10.1016/j.mseb.2022.115820
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85131966389&doi=10.1016%2fj.mseb.2022.115820&partnerID=40&md5=13a12dfac44e4675239cf611f51b1b57
Empty fruit bunches (EFB) biomass can be a sustainable source for the fabrication of nitrogen-doped carbon quantum dots (NCQDs) through hydrothermal treatment. However, the performance and stability of NCQDs produced for methyl green (MG) photocatalysis are yet to be evaluated. This study discusses the photodegradation of MG using NCQDs produced from EFB through the Taguchi approach. At room temperature and an MG dye solution of pH 7, functionalised NCQDs performed as effective photocatalysts in degrading 99% of MG dye under UV-light irradiation (302 nm) within 20 min. NCQDs fabricated from EFB showed outstanding stability and reactivity after 12 months of storage duration. NCQDs could be reused in photocatalysis for at least five cycles while maintaining their photo-degradability of MG above 70%. NCQDs fabricated from EFB biomass show great potential in treating wastewater contaminated with organic dyes. © 2022 Elsevier B.V.
Elsevier Ltd
9215107
English
Article
author Abd Rani U.; Ng L.Y.; Ng Y.S.; Ng C.Y.; Ong Y.H.; Lim Y.P.
spellingShingle Abd Rani U.; Ng L.Y.; Ng Y.S.; Ng C.Y.; Ong Y.H.; Lim Y.P.
Photocatalytic degradation of methyl green dye by nitrogen-doped carbon quantum dots: Optimisation study by Taguchi approach
author_facet Abd Rani U.; Ng L.Y.; Ng Y.S.; Ng C.Y.; Ong Y.H.; Lim Y.P.
author_sort Abd Rani U.; Ng L.Y.; Ng Y.S.; Ng C.Y.; Ong Y.H.; Lim Y.P.
title Photocatalytic degradation of methyl green dye by nitrogen-doped carbon quantum dots: Optimisation study by Taguchi approach
title_short Photocatalytic degradation of methyl green dye by nitrogen-doped carbon quantum dots: Optimisation study by Taguchi approach
title_full Photocatalytic degradation of methyl green dye by nitrogen-doped carbon quantum dots: Optimisation study by Taguchi approach
title_fullStr Photocatalytic degradation of methyl green dye by nitrogen-doped carbon quantum dots: Optimisation study by Taguchi approach
title_full_unstemmed Photocatalytic degradation of methyl green dye by nitrogen-doped carbon quantum dots: Optimisation study by Taguchi approach
title_sort Photocatalytic degradation of methyl green dye by nitrogen-doped carbon quantum dots: Optimisation study by Taguchi approach
publishDate 2022
container_title Materials Science and Engineering: B
container_volume 283
container_issue
doi_str_mv 10.1016/j.mseb.2022.115820
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85131966389&doi=10.1016%2fj.mseb.2022.115820&partnerID=40&md5=13a12dfac44e4675239cf611f51b1b57
description Empty fruit bunches (EFB) biomass can be a sustainable source for the fabrication of nitrogen-doped carbon quantum dots (NCQDs) through hydrothermal treatment. However, the performance and stability of NCQDs produced for methyl green (MG) photocatalysis are yet to be evaluated. This study discusses the photodegradation of MG using NCQDs produced from EFB through the Taguchi approach. At room temperature and an MG dye solution of pH 7, functionalised NCQDs performed as effective photocatalysts in degrading 99% of MG dye under UV-light irradiation (302 nm) within 20 min. NCQDs fabricated from EFB showed outstanding stability and reactivity after 12 months of storage duration. NCQDs could be reused in photocatalysis for at least five cycles while maintaining their photo-degradability of MG above 70%. NCQDs fabricated from EFB biomass show great potential in treating wastewater contaminated with organic dyes. © 2022 Elsevier B.V.
publisher Elsevier Ltd
issn 9215107
language English
format Article
accesstype
record_format scopus
collection Scopus
_version_ 1823296160039698432

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