Synthesis and characterisation of small ZnS particles |
| |
Authors: | G Berlier F Meneau G Sankar C R A Catlow J M Thomas B Spliethoff F Schüth S Coluccia |
| |
Institution: | 1. Davy Faraday Research Laboratory, The Royal Institution of Great Britain, 21 Albemarle Street, London, W1S 4BS, UK 2. Department of Inorganic, Physical and Materials Chemistry, NIS Center of Excellence, University of Torino, via P. Giuria, 71-10125, Torino, Italy 3. Department of Heterogeneous Catalysis, Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, Mülheim an der Ruhr, Germany
|
| |
Abstract: | Small ZnS particles, prepared at room temperature in an alcoholic medium using a zinc salt and thioacetamide as sulphur source,
have been characterised using a suite of techniques which includes XRD, TEM and Zn K-edge EXAFS. The investigation suggests
that aggregates of small sphalerite particles (cubic lattice), with average size of 3.5 nm and well-defined morphology are
obtained and the particle size appears not to change with increase in the reaction time from 2 to 24 h. Zn K-edge EXAFS experiments
were performed at 10 K, in order to reduce thermal disorder and the refinement of the EXAFS data resulted in very small second
shell coordination numbers with respect to the bulk samples. The result is in good agreement with SEM and XRD data about the
presence of nanosized particles, having a large number of surface atoms with low second shell coordination number. |
| |
Keywords: | ZnS nanoparticles EXAFS TEM |
本文献已被 SpringerLink 等数据库收录! |
|