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Influence of the Impaction Angle on the Triboelectric Charging of Aerosol Nanoparticles
Author(s) -
Bierwirth Malte,
Gensch Manuel,
Weber Alfred P.
Publication year - 2021
Publication title -
chemie ingenieur technik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.365
H-Index - 36
eISSN - 1522-2640
pISSN - 0009-286X
DOI - 10.1002/cite.202000196
Subject(s) - triboelectric effect , impaction , materials science , nanoparticle , particle (ecology) , aerosol , composite material , analytical chemistry (journal) , nanotechnology , chemistry , chromatography , medicine , oceanography , surgery , organic chemistry , geology
A low pressure impactor is used to measure triboelectric charging behavior of metallic nanoparticles. Ag nanoparticles, produced by spark discharge, were impacted onto Pt sputtered targets. The influence of the impaction angle and impaction velocity on the triboelectric charging was investigated. While for perpendicular impaction the charge transfer behavior of previous work was confirmed, the oblique impaction revealed new phenomena. Additional charge transfer was observable, which increases with obliqueness. The possibility of mass transfer between particle and target due to the high‐energy collisions was also investigated. SEM characterization and Auger spectroscopy indicate mass transfer from the particle to the target surface.