Journal of Advanced Chemical Engineering

Effect of silver on TiO₂ support by reactive magnetron sputtering on the selective photocatalytic hydrogenation of 3-nitrostyrene to 3-vinylaniline

Joint Event on World Chemistry, Catalysis & Petro Engineering

MAY 13-14, 2019 | LONDON, UK

Pimchanok Nakchuai, Okorn Mekasuwandumrong, and Piyasan Praserthdam

Chulalongkorn University, Thailand Silpakorn University, Thailand

Scientific Tracks Abstracts: J Adv Chem Eng

Abstract:

Recently, the photocatalytic system for hydrogenation of nitro aromatics to amino aromatics using alcohol as a hydrogen source has been studied. In this study, nanocrystalline TiO2 supported Ag catalysts have been prepared by using pulsed Direct Current (DC) reactive magnetron sputtering of Ag targets in an Argon atmosphere onto P25-TiO2 support. The Ag doping content was varied by adjusting the coating time. The obtained catalysts were characterized by Scanning Electron Microscopy (SEM), Energy Dispersive X-ray spectroscopy (EDX), X-ray Diffraction (XRD), and UV-VIS spectroscopy (UV-VIS). Photocatalytic activities of all catalysts were examined via the photocatalytic reduction of 3-nitrostyrene in ethanol suspensions under 2 h of UV light irradiation at room temperature and atmospheric pressure, and then compared with the pure TiO2 support and conventional impregnation Ag/TiO2. From this reaction, 3-vinylaniline was produced from the reduction of 3-nitrostyrene while acetaldehyde was produced by oxidation of ethanol. The results showed that the magnetron sputtering Ag/TiO2 catalysts achieved high photocatalytic activities as compared to pure TiO2 and impregnation Ag/TiO2. Accordingly, the reactive magnetron sputtering was a promising technique for the deposition of metal onto the support and this photocatalytic system was an efficient strategy for the practical catalytic process.

Biography :

Miss Pimchanok Nakchuai was born on September 23, 1994, in Thailand. She received her bachelor’s degree in Engineering (Chemical Engineering) from King Mongkut’s Institute of Technology Ladkrabang in 2017. During she was an internship student, she got the great opportunity to intern relate to the petrochemicals industrial project innovation at Siam Cement Group (SCG) in Chemicals Business. She has mainly interested in the fields of nanomaterials for catalytic hydrogenation and photocatalysis. So, she currently continued with her graduate studies in Chemical Engineering at Center of Excellence on Catalysis and Catalytic Reaction Engineering (CECC), Chulalongkorn University.

E-mail: ann.pimch@gmail.com