CO oxidation over Cu2O deposited on 2D continuous lamellar g-C3N4

• Main Authors: Shi, Yukun, Hu, Xiaojing, Zhao, Jingtao, Zhou, Xiaojiao, Zhu, Baolin, Zhang, Shoumin, Huang, Weiping
• Format: Article
• Language: English
• ISSN: 1144-0546; 1369-9261
• DOI: 10.1039/c5nj00621j

Cu 2 O deposited on 2D continuous lamellar g-C 3 N 4 (Cu 2 O/g-C 3 N 4 ) was prepared via a facile impregnation-chemical reduction procedure. The composition, structure and morphology of as-prepared Cu 2 O/g-C 3 N 4 were characterized by XRD, SEM, TEM, CO-TPR, FT-IR and nitrogen adsorption, respectively. The influence of Cu 2 O loading on the performances of Cu 2 O/g-C 3 N 4 , e.g. adsorption ability for methyl orange (MO) and the stability as well as catalytic activity for CO oxidation, was investigated. The changing trend of adsorption ability and the catalytic activity of Cu 2 O/g-C 3 N 4 moved in the same direction. When the mass ratio of Cu 2 O to g-C 3 N 4 was 4 : 10, the as-prepared composite exhibited the strongest adsorption ability and the highest catalytic activity; it also showed excellent stability in CO oxidation and over it the 100% conversion of CO was kept for more than 12 h under reaction conditions. The strong adsorption ability and good catalytic performance of Cu 2 O/g-C 3 N 4 were ascribed to the synergetic effects between g-C 3 N 4 and Cu 2 O as well as the improved dispersibility and the decreased particle size of Cu 2 O. The changing trend of adsorption ability and the catalytic activity of Cu 2 O/g-C 3 N 4 moved in the same direction.