Iron oxide-decorated TiO2 layer via plasma-enhanced redox deposition as catalyst candidate
Nisa Nashrah, Wail Al Zoubi, Young Gun Ko*

School of Materials Science and Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea

Abstract

Metal oxide has advanced state-of-the-art functional applications including catalysis due to its decent stability in catalytic reactions compared to a single-metal system. However, a facile approach producing catalyst with comparable efficiency remain challenged. Here, we present uni-integrated system comprising nanoscale iron oxide decorating porous TiO2 layer via one-step plasma-enhanced redox deposition where a redox reaction of aqueous Fe (III) and Ti substrate with water in electrolyte occurs simultaneously. Both experimental results and computational calculations provide direct evidence of charge transfer behavior between Fe (III) and Ti (IV), demonstrating promising efficiency and selectivity toward catalytic hydrogenation up to 20 cycles. Furthermore, liquid chromatography-mass spectroscopy (LC-MS), in-situ Raman, and electron spin resonance (ESR) are performed to monitor the reaction mechanism.

Keywords: Iron oxide, nanoparticle, deposition, catalysis

Topic: Industrial and Engineering Chemistry