A facile method for scalable preparation of mesoporous structured SmMnO3 perovskites sheets for efficient catalytic oxidation of toluene

Perovskite-type oxide of SmMnO3 sheet with mesoporous structures was successfully synthesized for the first time by a simple one-step calcination. Citric acid was utilized as the propellant for the construction of SmMnO3 perovskite structure and the mesoporous formation. The characterization results showed that a large number of mesoporous were evenly distributed into the SmMnO3 perovskites sheets by the effect of citric acid. The as-prepared catalyst showed superior catalytic activity and stability for toluene oxidation; the toluene conversion kept ca. 99.9% at 240 degrees C during the reaction of 36 h. This work could supply an impactful technique to prepare high catalytic activity of ABO(3) perovskites with mesoporous structure for the practical applications. (C) 2017 Elsevier B.V. All rights reserved.