Journal of Nanomedicine & Nanotechnology

Facile synthesis of SiO2@TiO2@Ag2O composite catalyst for degradation of RhB dye under UV and visible light

13^th International Conference on Nanotek & Expo

December 05-07, 2016 Phoenix, USA

Osman Ahmed Zelekew, Dong-Hau Kuo

Taiwan University of Science and Technology, Taiwan

Posters & Accepted Abstracts: J Nanomed Nanotechnol

Abstract:

Herein, the thin layered n-type TiO2 semiconductor is coated on SiO2 spherical particles followed by decorating p-type Ag2O nanoparticles outside with the purpose of p-n heterojunction formation for effective electron and hole separation. The composite spherical particles abbreviated as SiO2@TiO2@Ag2O was characterized by XRD, SEM, TEM, HRTEM, and DRS techniques. The catalytic performance was tested for degradation of RhB dye under UV and Visible light sources. The composite catalyst showed an excellent RhB dye degradation. The combined n-type TiO2 with the rich in electron inward and the p-type Ag2O with the rich in hole outward facilitates the degradation reaction of dye. Therefore, n-type TiO2 inside and p-type Ag2O outside on the surface of SiO2 support can be used as a catalyst for effective degradation of organic dye. Keywords: p-n heterojunction, catalyst, degradation, nanoparticles, RhB dye.

Biography :

Email: osmax2007@gmail.com