Synthesis of quantum-sized BiOCl supported on SBA-16 with high dispersity and enhanced photocatalytic activity

摘要

Quantum-sized BiOCl in the cage-like pores of SBA-16 have been prepared by impregnation method. The average diameter of BiOCl obviously decreases to 6.1 nm due to the confinement effect from the framework of SBA-16. Compared to the bulk BiOCl, the quantum-sized BiOCl in the cage-like pores of SBA-16 possesses a larger bandgap (3.35 eV), and the quantum confinement effect simultaneously result in an elevated electron transport ability and enhanced redox ability of charge carriers. The as-prepared BiOCl@SBA-16 photocatalysts exhibit high activity toward degradation of methyl orange (MO) under simulated sunlight irradiation. (C) 2017 Elsevier B.V. All rights reserved.