Photocatalytic generation of useful hydrocarbons and hydrogen from acetic acid in the presence of lanthanide modified TiO2 |
| |
| Authors: | S Asal M Saif H Hafez S Mozia A Heciak D Moszy&#x;ski MSA Abdel-Mottaleb |
| |
| Affiliation: | a Department of Chemistry, Faculty of Education, Roxy, Ain Shams University, 11711 Cairo, Egypt;b Environmental Studies and Research Institute (ESRI), Minoufiya University, Sadat Branch, Sadat City, Egypt;c West Pomeranian University of Technology, Institute of Chemical and Environment Engineering, ul. Pułaskiego 10, 70-322 Szczecin, Poland;d Department of Chemistry, Faculty of Science, Ain Shams University, 11711 Cairo, Egypt |
| |
| Abstract: | Pure and Ln3+ modified TiO2 photocatalysts (Ln3+ = Eu3+ or Sm3+ ions) synthesized by a sol-gel method as well as commercially available P25 were applied for photocatalytic generation of useful hydrocarbons and hydrogen from acetic acid. Structure and surface properties of the photocatalysts were characterized by XRD, UV-vis/DR, FT-IR and N2 adsorption-desorption measurements. The main gaseous products of CH3COOH decomposition were CH4 and CO2. Trace amounts of C2H6 and H2 were also detected in the reaction mixture. Moreover, it was observed that the quantities of all identified gases increased with elongation of irradiation time. The most active photocatalysts towards CH4 and H2 generation were Ln3+/TiO2 containing 0.05 mol % of Sm and Eu, respectively. The results revealed that the Ln3+ modification can improve the effectiveness of the photocatalysts compared to pure and commercially available TiO2 provided that a proper amount of modifying ions is used. |
| |
| Keywords: | Photocatalysis Hydrocarbons Methane Acetic acid Sm/TiO2 Eu/TiO2 |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
