Azliza Azani
Thumbnail Image
Preferred name
Azliza Azani
Official Name
Azani, Azliza
Alternative Name
Azani, Azliza
Azani, A.
Main Affiliation
Scopus Author ID
57210390723
Researcher ID
CCW-3693-2022

Research Output

Filters

7
Reset filters

Settings
Now showing 1 - 7 of 7
  • Publication
    Surface Modification of GO/TiO2 Thin Film by Sodium Dodecyl Sulphate for Photocatalytic Applications
    ( 2024-01-01)
    Azliza Azani
    ;
    Dewi Suriyani Che Halin
    ;
    Mohd Arif Anuar Mohd Salleh
    ;
    Kamrosni Abdul Razak
    ;
    Mohd. Mustafa Al Bakri Abdullah
    ;
    Muhammad Mahyiddin Ramli
    ;
    Vizureanu P.
    ;
    Mohd Fairul Sharin Abdul Razak
    ;
    Sandu A.V.
    ;
    Mohamad N.
    Photocatalyst material titanium dioxide (TiO2) and graphene oxide (GO) were used to improve the self-cleaning properties of thin films. The sol–gel spin-coating method was successfully used to synthesize GO/TiO2 thin films. Surface modification was applied to optimize the self-cleaning capabilities by adding several concentrations of sodium dodecyl sulfate (SDS) (0.1 w/v%, 0.2 w/v%, 0.3 w/v%, 0.4 w/v%, and 0.5 w/v%) to the parent solution. The synthesized thin films were investigated using scanning electron microscopy (SEM), atomic force microscopy (AFM), X-ray diffraction, UV-visible spectroscopy, water contact angle analysis, and photocatalytic analysis. The AFM and SEM images revealed that as the SDS amount increased, the particles became less agglomerated, and the roughness of the surface reduced from 2.54 × 102 nm to 0.83 × 102 nm. The wettability analysis showed that when SDS increased to 0.4 w/v%, the water contact angle dropped to 15.30°, implying that the thin film exhibits hydrophilic qualities. A decrease in the GO/TiO2 band gap was obtained linearly with the increase in SDS addition from 3.17 eV to 2.75 eV. Finally, the improvement of the surface coating and reduction of the band gap enhanced the photocatalytic activity, which degraded 78.97% of methylene blue, which was obtained by 0.4SDS.
      2
  • Publication
    Self-cleaning property of ag/tio2 thin film
    ( 2020-01-01)
    Kamrosni Abdul Razak
    ;
    Dewi Suriyani Che Halin
    ;
    Azliza Azani
    ;
    Mohd. Mustafa Al Bakri Abdullah
    ;
    Mohd Arif Anuar Mohd Salleh
    ;
    Norsuria Mahmed
    ;
    Chobpattana V.
    Ag/TiO2 thin film was prepared by the sol-gel method through the hydrolysis of titanium tetraisopropoxide and silver nitrate solution. Spin coating method was used to get uniform film on ITO glass substrate followed by annealing process for 1 hour. After that, all the samples were characterised using GIXRD and FESEM and undergone water contact angle test and MB degradation. Silver ion concentrations were varied to observe the effect on crystalline state, morphology, wettability and photocatalytic properties. The results showed that Ag/TiO2 thin film was in anatase phase and it could degrade nearly 70% of methylene blue after 150 min illumination. The formed Ag/TiO2 thin film has excellent self-cleaning property with compact, continuous, smooth, and good hydrophilicity property.
      2
  • Publication
    Factors of Controlling the Formation of Titanium Dioxide (TiO2) Synthesized using Sol-gel Method - A Short Review
    ( 2022-01-24)
    Kamrosni Abdul Razak
    ;
    Dewi Suriyani Che Halin
    ;
    Mohd. Mustafa Al Bakri Abdullah
    ;
    Mohd Arif Anuar Mohd Salleh
    ;
    Norsuria Mahmed
    ;
    Azliza Azani
    ;
    Chobpattana V.
    There have been experiments on TiO2 thin films synthesized utilizing sol-gel techniques. The sol-gel method is a straightforward technology that gives numerous benefits to the researcher, for instance, material's reliability, reproducibility, and controllability. Following from there, it can be utilized to make high-quality nano-structured thin films. According to previous studies, the TiO2 films' characteristics occur to be highly dependent on the production parameters and initial materials utilized. Controlling the formation of TiO2 thin films with the sol-gel method was momentarily discussed here.
      1
  • Publication
    The effect of GO/TiO2 thin film during photodegradation of methylene blue dye
    ( 2021-09-01)
    Azliza Azani
    ;
    Dewi Suriyani Che Halin
    ;
    Mohd. Mustafa Al Bakri Abdullah
    ;
    Kamrosni Abdul Razak
    ;
    Mohd Fairul Sharin Abdul Razak
    ;
    Muhammad Mahyiddin Ramli
    ;
    Mohd Arif Anuar Mohd Salleh
    ;
    Chobpattana V.
    Titanium (IV) isopropoxide (TTIP) was used to synthesize GO/TiO2 thin films using a sol-gel spin-coating method onto a glass substrate, undergoing an heat tretment at 350 °C. Several amounts of graphene oxide (GO) (0-20mg) were weighed into a sol solution of TiO2 to produce GO/TiO2 thin films. The thin film samples were characterized by X-ray diffraction (XRD) to analyze the samples’ phase and by scanning electron microscopy (SEM) to analyze the samples’ microstructure. Physical testing such as water contact angle (WCA) was analyzed using an optical microscope with J-Image software. In contrast, the optical band gap and photodegradation of methylene blue under sunlight irradiation of the thin film was analyzed using UV-VIS spectrophotometry. GO5 thin film sample showed low-intensity anatase phase formation, where the microstructure revealed a larger surface area with the addition of GO. WCA reveals that GO/TiO2 thin film exhibits super hydrophilic properties where the angle decreases from 37.83° to 4.11°. The optical result shows that GO has improved the absorption edges by expanding into visible regions. Moreover, due to the existence of GO 3.30 eV band gap energy of TiO2 decreases from to 3.18 eV obtained by GO5. The improved adsorption edge allows Ti3+, O2 and interstitial states to be formed in low valence states with energy underneath than in the TiO2 band gap. Therefore, the photodegradation of methylene blue (MB) dye increases from 48 % to 59 % in the GO/TiO2 thin film.
      4  1
  • Publication
    Microstructural Study on Ag/TiO2 Thin Film
    ( 2022-07-01)
    Kamrosni Abdul Razak
    ;
    Dewi Suriyani Che Halin
    ;
    Azliza Azani
    ;
    Mohd. Mustafa Al Bakri Abdullah
    ;
    Mohd Arif Anuar Mohd Salleh
    ;
    Norsuria Mahmed
    ;
    Chobpattana V.
    ;
    Kaczmarek L.
    ;
    Sandu A.V.
    ;
    Garus S.
    The synthesis of Ag/TiO2 thin film was carried out by the sol–gel spin coating method using ITO glass as a substrate in a short period of stirring time, which is less than 25 min. The produced films were annealed in a furnace at 500◦C for 1 h. Various concentrations of AgNO3, from 0.1 to 0.9 M, were added. The as-prepared films were characterized using X-ray diffraction, scanning electron microscopy, and atomic force microscopy. The results indicate that all films showed a single phase of anatase, TiO2. Ag/TiO2 thin films with 0.1 M of AgNO3 solution show that the elements form networks connecting Ag/TiO2 microstructures forming a porous, consistent, and continuous layer on the substrate surface.
      1
  • Publication
    Factors of controlling the formation of Titanium Dioxide (TiO₂) synthesized using Sol-gel method – a short review
    ( 2022)
    Kamrosni Abdul Razak
    ;
    Dewi Suriyani Che Halin
    ;
    Mohd. Mustafa Al Bakri Abdullah
    ;
    Mohd Arif Anuar Mohd Salleh
    ;
    Norsuria Mahmed
    ;
    Azliza Azani
    ;
    V. Chobpattana
    There have been experiments on TiOâ‚‚ thin films synthesized utilizing sol-gel techniques. The sol-gel method is a straightforward technology that gives numerous benefits to the researcher, for instance, material's reliability, reproducibility, and controllability. Following from there, it can be utilized to make high-quality nano-structured thin films. According to previous studies, the TiOâ‚‚ films' characteristics occur to be highly dependent on the production parameters and initial materials utilized. Controlling the formation of TiOâ‚‚ thin films with the sol-gel method was momentarily discussed here.
      26  86
  • Publication
    The Effect of GO/TiO2 Thin Film During Photodegradation of Methylene Blue Dye
    ( 2021)
    Azliza Azani
    ;
    Dewi Suriyani Che Halin
    ;
    Mohd. Mustafa Al Bakri Abdullah
    ;
    Kamrosni Abdul Razak
    ;
    Mohd Fairul Sharin Abdul Razak
    ;
    V Chobpattana
    ;
    Mohd Arif Anuar Mohd Salleh
    ;
    Muhammad Mahyiddin Ramli
    Titanium (IV) isopropoxide (TTIP) was used to synthesize GO/TiO2 thin films using a sol-gel spin-coating method onto a glass substrate, undergoing an heat tretment at 350 °C. Several amounts of graphene oxide (GO) (0-20mg) were weighed into a sol solution of TiO2 to produce GO/TiO2 thin films. The thin film samples were characterized by X-ray diffraction (XRD) to analyze the samples’ phase and by scanning electron microscopy (SEM) to analyze the samples’ microstructure. Physical testing such as water contact angle (WCA) was analyzed using an optical microscope with J-Image software. In contrast, the optical band gap and photodegradation of methylene blue under sunlight irradiation of the thin film was analyzed using UV-VIS spectrophotometry. GO5 thin film sample showed low-intensity anatase phase formation, where the microstructure revealed a larger surface area with the addition of GO. WCA reveals that GO/TiO2 thin film exhibits super hydrophilic properties where the angle decreases from 37.83° to 4.11°. The optical result shows that GO has improved the absorption edges by expanding into visible regions. Moreover, due to the existence of GO 3.30 eV band gap energy of TiO2 decreases from to 3.18 eV obtained by GO5. The improved adsorption edge allows Ti3+, O2 and interstitial states to be formed in low valence states with energy underneath than in the TiO2 band gap. Therefore, the photodegradation of methylene blue (MB) dye increases from 48 % to 59 % in the GO/TiO2 thin film.
      30  34