Kamrosni Abdul Razak
Thumbnail Image
Preferred name
Kamrosni Abdul Razak
Official Name
Razak, Kamrosni Abdul
Alternative Name
Abdul Razak, Kamrosni
Razak, K. Abdul
Razak, Kamrosni Ab
Razak, Kamrosni Abdul
Razak, K. A.
Abdul Razak, K.
K., Abdul Razak
Main Affiliation
Scopus Author ID
57207592874
Researcher ID
DNW-1117-2022

Research Output
Now showing 1 - 3 of 3
No Thumbnail Available
Publication

Microstructure evolution of Ag/TiO2 thin film

2021 , Dewi Suriyani Che Halin , Kamrosni Abdul Razak , Mohd Arif Anuar Mohd Salleh , Mohd Izrul Izwan Ramli , Mohd. Mustafa Al Bakri Abdullah , Ayu Wazira Azhari , Kazuhiro Nogita , Hideyuki Yasuda , Marcin Nabiałek , Jerzy J. Wysłocki

Ag/TiO2 thin films were prepared using the sol-gel spin coating method. The microstructural growth behaviors of the prepared Ag/TiO2 thin films were elucidated using real-time synchrotron radiation imaging, its structure was determined using grazing incidence X-ray diffraction (GIXRD), its morphology was imaged using the field emission scanning electron microscopy (FESEM), and its surface topography was examined using the atomic force microscope (AFM) in contact mode. The cubical shape was detected and identified as Ag, while the anatase, TiO2 thin film resembled a porous ring-like structure. It was found that each ring that coalesced and formed channels occurred at a low annealing temperature of 280 °C. The energy dispersive X-ray (EDX) result revealed a small amount of Ag presence in the Ag/TiO2 thin films. From the in-situ synchrotron radiation imaging, it was observed that as the annealing time increased, the growth of Ag/TiO2 also increased in terms of area and the number of junctions. The growth rate of Ag/TiO2 at 600 s was 47.26 µm2/s, and after 1200 s it decreased to 11.50 µm2/s and 11.55 µm2/s at 1800 s. Prolonged annealing will further decrease the growth rate to 5.94 µm2/s, 4.12 µm2/s and 4.86 µm2/s at 2400 s, 3000 s and 3600 s, respectively.

View
No Thumbnail Available
Publication

The effect of polyethylene glycol addition on wettability and optical properties of GO/TiO2 thin film

2021 , Azliza Azani , Dewi Suriyani Che Halin , Kamrosni Abdul Razak , Mohd. Mustafa Al Bakri Abdullah , Marcin Nabiałek , Muhammad Mahyiddin Ramli , Mohd Fairul Sharin Abdul Razak , Andrei Victor Sandu , Wojciech Sochacki , Tomasz Skrzypczak

Modification has been made to TiO2 thin film to improve the wettability and the absorption of light. The sol-gel spin coating method was successfully used to synthesize GO/TiO2 thin films using a titanium (IV) isopropoxide (TTIP) as a precursor. Different amounts of polyethylene glycol (PEG) (20 to 100 mg) were added into the parent sol solution to improve the optical properties and wettability of the GO/TiO2 thin film. The effect of different amounts of PEG was characterized using X-ray diffraction (XRD) for the phase composition, scanning electron microscopy (SEM) for microstructure observation, atomic force microscopy (AFM) for the surface topography, ultraviolet–visible spectrophotometry (UV-VIS) for the optical properties and wettability of the thin films by measuring the water contact angle. The XRD analysis showed the amorphous phase. The SEM and AFM images revealed that the particles were less agglomerated and surface roughness increases from 1.21 × 102 to 2.63 × 102 nm when the amount of PEG increased. The wettability analysis results show that the water contact angle of the thin film decreased to 27.52° with the increase of PEG to 80 mg which indicated that the thin film has hydrophilic properties. The optical properties also improved significantly, where the light absorbance wavelength became wider and the band gap was reduced from 3.31 to 2.82 eV with the presence of PEG.

View
No Thumbnail Available
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.

View