Muhammad Salihin Zakaria
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Preferred name
Muhammad Salihin Zakaria
Official Name
Muhammad Salihin , Zakaria
Alternative Name
Zakaria, Muhammad Salihin
Zakaria, M. S.B.
Zakaria, M. S.
Salihin, M. Z.
Main Affiliation
Scopus Author ID
56479320900
Researcher ID
HTN-7486-2023

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Photocatalytic degradation of methylene blue using zinc oxide/styrene butadiene rubber photocatalyst

2020-01-01 , Nordin R. , Latiff N. , Yusof R. , Nawawi W.I. , Muhammad Salihin Zakaria , Ishak Z.A.M.

The zinc oxide/styrene butadiene rubber (ZnO/SBR) photocatalyst was successfully prepared via mechanical mixing at 30 °C. ZnO/SBR square shaped (3 x 3 cm) with 0.54 mm thickness was investigated towards photocatalytic degradation of methylene blue (MB) solution under visible light irradiation and compared with bare ZnO and raw SBR. FTIR absorption spectra reveal the characteristic peaks and estimated intensity of conjugated carbon for ZnO/SBR. ZnO/SBR showed excellent photocatalytic performance nearly as good as bare ZnO.

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Structural and optical properties of commercial microparticle zinc oxide

2020-01-01 , Nordin R. , Latiff N. , Yusof R. , Nawawi W.I. , Muhammad Salihin Zakaria , Ishak Z.A.M.

Commercial grade ZnO were sieved into particle size of 38 to 90 µm at room temperature. X-ray diffraction (XRD) pattern confirms the hexagonal wurzite structure of ZnO microparticles. Irregular shapes of ZnO microparticles were observed by scanning electron microscope (SEM). Fourier transform infrared spectra (FTIR) confirmed the presence of Zn-O band. In addition, Uv-visible spectra (UV-Vis) were empolyed to estimate the band gap energy of ZnO microparticles.

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Effect of several commercial rubbers as substrates for zinc oxide in the photocatalytic degradation of methylene blue under visible irradiation

2020-09-01 , Nordin R. , Latiff N. , Yusof R. , Nawawi W.I. , Muhammad Salihin Zakaria , Ishak Z.A.M.

A new approach of mechanical preparation of photocatalyst zinc oxide (ZnO)/rubbers from four types of rubbers: styrene butadiene rubber (SBR), ethylene propylene diene monomer (EPDM), natural rubber (NR), and epoxidized natural rubber (ENR) with 50% epoxidation is presented. This technique is simple, fast and cost effective as ZnO/rubbers were me-chanically mixed using conventional two-roll mill at 27°C for 10 min and compressed into flat sheet. The characteristics of photocatalyst were studied by X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), ultraviolet-visible spectroscopy (UV-Vis) and field emission scanning electron microscope (FESEM). The photocatalytic activity of ZnO/rubbers was evaluated using methylene blue (MB) as a model pollutant under visible light for 300 min. The photocatalytic degradation efficiency of ZnO/SBR is nearly as good as that of ZnO powder (87.32%) compared to ZnO/NR, ZnO/EPDM and ZnO/ENR. This is due to the highest index of conjugated carbon-carbon bond of SBR and hydrogen bonding between ZnO and SBR. The formation of hydrogen bonding was confirmed by FTIR and reduction of energy band gap of ZnO/SBR. The photocatalytic degradation of MB with ZnO/SBR was could be fitted by pseudo-first-order kinetics of the Langmuir-Hinshelwood model.

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