Abstract: This research article presents on the experimental study of the Influence of Hydrochloric Acid Concentration on the TiO2 Thin Films. The microstructures and nanostructures TiO2 thin films were grown directly on the surface of fluorine-doped SnO2 (FTO glass substrate) by using simple aqueous chemical growth technique through single step surfactant free hydrothermal method with a steel made autoclave. The chemical solution was prepared by mixing titanium butoxide (TBOT) used as precursor, Hydro Chloric Acid (HCL) as catalyst, and the de-ionized water as solvent. Field-emission scanning electron microscopy (FE-SEM; JOEL JSM-6320F) with an accelerating voltage of 20 kV was used to analyse the morphological of the nanostructures TiO2 thin films through the surface morphology images and cross section images. Meanwhile, the thickness of each nanostructures TiO2 thin films was evaluated by using the cross section images. Then, Micro-Raman spectrometer-In-Via reflex Raman spectroscopy system operated with 514 nm wavelength of argon (Ar+) laser was used to study the crystalline structure of the nanostructures TiO2 thin films. Lastly, LAMBDA 750 UV/Vis/NIR Spectrophotometer (UV-Vis) was used to study the optical property in this study. It was found that the morphologies of the synthesized microstructures and nanostructures TiO2 thin films can be controlled by the hydrochloric acid concentration to obtain the complex nanostructures for boosting the photo catalytic performance. These microstructures and nanostructures TiO2 thin film also indicate the good optical properties in the optical absorption measurement.  Experimentally, it has been well established that the single-step hydrothermal synthesis method has demonstrated a high-yield fabrication process for creating large-scale production of microstructures and nanostructures TiO2 thin films.

Keywords: Microstructures and Nanostructures; Titanium Dioxide; Hydrothermal method; Thin films

| DOI: 10.17148/IJIREEICE.2019.7413