Norsuria Mahmed
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Norsuria Mahmed
Official Name
Norsuria, Mahmed
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Mahmed, Norsuria
Mahmed, N.
Norsuria, Mahmed
Norsuria, M.
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Scopus Author ID
24802694300
Researcher ID
FOC-8505-2022

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  • Publication
    Influence of ZnO Nanoparticles on Mechanical Properties and Photocatalytic Activity of Self-cleaning ZnO-Based Geopolymer Paste
    ( 2020-06-01)
    Siti Norsaffirah Zailan
    ;
    Bouaissi, Aissa
    ;
    Norsuria Mahmed
    ;
    Mohd. Mustafa Al Bakri Abdullah
    Abstract: The influence of zinc oxide (ZnO) nanoparticles on the mechanical properties and photocatalytic degradation of methylene blue (MB) of ZnO-based geopolymer material was investigated under the illumination of ultraviolet (UV) radiations. In this work, ZnO-based geopolymer paste was manufactured using class F fly ash (FA) and ZnO nanoparticles powders with different mass percentages (0, 2.5, 5.0, 7.5 and 10 wt%). The FA-ZnO dry mix was activated by alkaline activator solution made from sodium silicate and sodium hydroxide with a ratio of 2.5. The mechanical properties were investigated by performing a compressive strength test at 28 days. The photocatalytic activity of ZnO nanoparticles was evaluated by measuring the photodegradation level of methylene blue under sunlight rays. The results showed a substantial influence of ZnO on the compressive strength, which decreased with the increase of ZnO amounts ranging from 2.5 to 7.5 wt% then a slightly increased at 10 wt% of ZnO. The addition of ZnO nanoparticles to a geopolymeric material showed a satisfactory efficiency of photocatalytic degradation of methylene blue after 150 min of exposure to sunlight. Phase analysis revealed that the addition of ZnO nanoparticles in the geopolymeric system develops a new ZnO crystalline phases. Graphic Abstract: [Figure not available: see fulltext.].
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