Facile fabrication and optical property of hollow SnO2 spheres and their application in water treatment.
Hollow SnO(2) spheres with smooth surface have been fabricated by a low temperature template-free solution phase route via self-assembly of small nanocrystalline particles. These hollow spheres have a very thin shell thickness of about 10 nm and are built from SnO(2) nanocrystals of an average size of 5.3 nm. The evacuation behavior of inside-out Ostwald ripening can be used to explain the formation of hollow spheres according to results of time-dependent reactions. The cathodoluminescence spectrum indicates a blue shift of the band gap emission peak of SnO(2), originating from quantum confinement effect due to the nanoscale size of SnO(2) particles. The as-prepared SnO(2) hollow spheres were also found to exhibit excellent performance in wastewater treatment.
Department of Chemistry, University of Science and Technology of China, Hefei 230026, PR China. sliang@ustc.edu.cn
Liang
L
Shi
Hailin
H
Lin
D000042:Absorption; D036103:Nanotechnology / Q000379:methods*; D055620:Optical Phenomena; D010316:Particle Size; D013499:Surface Properties; D013696:Temperature; D017971:Tin Compounds / Q000737:chemistry*; D014867:Water / Q000737:chemistry*
D017971:Tin Compounds; D014867:Water; C045358:stannic oxide