Photocatalytic degradation of methylene blue dye solution using different amount of ZnO as a photocatalyst / Hartini Ahmad Rafaie … [et al.]

Mohd Yusop, Nur Fitrahana and Azmi, Nurathira Faqihah and Abdullah, Nur Syakirah and Ramli, Nurul Infaza Talalah (2021) Photocatalytic degradation of methylene blue dye solution using different amount of ZnO as a photocatalyst / Hartini Ahmad Rafaie … [et al.]. Science Letters (ScL), 15 (1). pp. 1-12. ISSN (eISSN) 2682-8626

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Abstract

Zinc oxide (ZnO) powder was used as a photocatalyst for the photocatalytic degradation of methylene blue (MB) dye solution. In this study, different amount of ZnO (10, 20 and 30 mg) as photocatalyst was used to investigate the performance of photocatalytic degradation of MB dye solution. The morphology and structural properties of ZnO powder were studied by X-ray diffraction (XRD) and Field Emission Scanning Electron Microscope (FESEM) techniques. The photocatalytic activities of the ZnO powder were investigated by degrading the MB dye solution under UV light irradiation at different amounts of ZnO photocatalyst. The percentage degradation of MB dye solution in the presence of 10 mg ZnO powder was found to be the highest at 96.2 % within 60 min irradiation compared to 20 and 30 mg of ZnO powder. The photodegradation rate constants, k obtained in this study were 0.0661, 0.0558, and 0.0507 min-1 for 10, 20, and 30 mg ZnO powder, respectively that follow the pseudo first-order reaction kinetics.

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Item Type: Article
Creators:
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Mohd Yusop, Nur Fitrahana
UNSPECIFIED
Azmi, Nurathira Faqihah
UNSPECIFIED
Abdullah, Nur Syakirah
UNSPECIFIED
Ramli, Nurul Infaza Talalah
UNSPECIFIED
Subjects: Q Science > QD Chemistry > Physical and theoretical chemistry > Theory of solution
Q Science > QD Chemistry > Physical and theoretical chemistry > Photochemistry
Divisions: Universiti Teknologi MARA, Shah Alam > Faculty of Applied Sciences
Journal or Publication Title: Science Letters (ScL)
UiTM Journal Collections: UiTM Journal > Science Letters (ScL)
ISSN: (eISSN) 2682-8626
Volume: 15
Number: 1
Page Range: pp. 1-12
Item ID: 47036
Uncontrolled Keywords: Methylene blue, photocatalytic degradation, photocatalyst, Zinc Oxide
URI: https://ir.uitm.edu.my/id/eprint/47036

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47036

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