Preparation and UV Characterization of TiO₂ Nanoparticles Synthesized by Sanss

摘要

This paper proposes preparation and investigation of UV characterization of TiO₂ nanocomposite synthesized by SANSS. A Submerge Arc Nano particles Synthesis System (SANSS) to produce TiO₂ nano particles in deionized water without any of dispersant [1,2] has been successfully accomplished in this study. Uniform dispersion, deep UV optical absorption, and crystalline structure of TiO₂ nano particles are investigated. Particularly, deep UV absorbance is the unique characteristic of TiO₂ nano particles synthesized by SANSS. The evidence of deep UV absorbance reveals the unique quantum effect of TiO₂ nano particles suspend in deionized water. As a result, the observed absorbance pattern indicates absorbent energy of TiO₂ nano fluids synthesized by proposed method is higher than that of TiO₂ nano fluids prepared by other conventional fabrication process. The observed UV absorbance of the nano fluids demonstrates the TiO₂ molecular tends to react with higher activation energy. After being exposed to the UV light irradiation, the TiO₂ nano particles will spontaneously correspond for photo catalytic reaction mechanism through hydroxyl radicals with higher kinetic energy which can cause decomposition of high energetic covalent bond such as C=C, C-H, etc (Legan , 1982) [3]. The result of the experiment indicates that VOC (volatile organic compounds) with C-C, C=C, C-H structures such as Toluene now is more effectively to be decomposed by UV irradiation with existence of TiO₂ nano particles synthesized by proposed SANSS process.