A novel approach to rapid sizing of nanoparticles by using optical calorimetry

作者:Wollner Michelle; Leistner Matthias; Benusch Matthias; Wollmann Philipp; Grahlert Wulf; Kaskel Stefan*
来源:Advanced Powder Technology, 2017, 28(3): 1065-1068.
DOI:10.1016/j.apt.2017.01.012

摘要

Optical calorimetry was recently presented to be a versatile screening technique for a rapid and simple evaluation of adsorption properties (e.g. specific surface area, adsorption capacity) of porous materials. In this study, optical calorimetry is introduced for the sizing of nanoparticle powders. For this purpose, the sizing is done with various pyrogenic nanoparticles (SiO2, TiO2, Al2O3, ZnO, WC) in a diameter range of 6100 nm. By comparing the results of optical calorimetry to reference physisorption measurements as standard nanoparticle sizing technique, an excellent correlation is demonstrated. In contrast to the standard physisorption method, the optical calorimetry allows a simple and rapid screening (only 5 min per sample) of nanoparticles and therefore is well suited in fields with high sample numbers such as high-throughput synthesis or process control.

  • 出版日期2017-3