TY - JOUR

T1 - Ice Nucleation Activity of Graphene and Graphene Oxides

AU - Häusler, Thomas

AU - Gebhardt, Paul

AU - Iglesias, Daniel

AU - Rameshan, Christoph

AU - Marchesan, Silvia

AU - Eder, Dominik

AU - Grothe, Hinrich

N1 - Publisher Copyright: © 2018 American Chemical Society.

PY - 2018/3/1

Y1 - 2018/3/1

N2 - Aerosols can act as cloud condensation nuclei and/or ice-nucleating particles (INPs), influencing cloud properties. In particular, INPs show a variety of different and complex mechanisms when interacting with water during the freezing process. To gain a fundamental understanding of the heterogeneous freezing mechanisms, studies with proxies for atmospheric INPs must be performed. Graphene and its derivatives offer suitable model systems for soot particles, which are ubiquitous aerosols in the atmosphere. In this work, we present an investigation of the ice nucleation activity (INA) of different types of graphene and graphene oxides. Immersion droplet freezing experiments as well as additional analytical analyses, such as X-ray photoelectron spectroscopy, Raman spectroscopy, and transmission electron microscopy, were performed. We show within a group of samples that a highly ordered graphene lattice (Raman G band intensity >50%) can support ice nucleation more effectively than a lowly ordered graphene lattice (Raman G band intensity

AB - Aerosols can act as cloud condensation nuclei and/or ice-nucleating particles (INPs), influencing cloud properties. In particular, INPs show a variety of different and complex mechanisms when interacting with water during the freezing process. To gain a fundamental understanding of the heterogeneous freezing mechanisms, studies with proxies for atmospheric INPs must be performed. Graphene and its derivatives offer suitable model systems for soot particles, which are ubiquitous aerosols in the atmosphere. In this work, we present an investigation of the ice nucleation activity (INA) of different types of graphene and graphene oxides. Immersion droplet freezing experiments as well as additional analytical analyses, such as X-ray photoelectron spectroscopy, Raman spectroscopy, and transmission electron microscopy, were performed. We show within a group of samples that a highly ordered graphene lattice (Raman G band intensity >50%) can support ice nucleation more effectively than a lowly ordered graphene lattice (Raman G band intensity

UR - http://www.scopus.com/inward/record.url?scp=85045764044&partnerID=8YFLogxK

U2 - 10.1021/acs.jpcc.7b10675

DO - 10.1021/acs.jpcc.7b10675

M3 - Article

AN - SCOPUS:85045764044

VL - 122.2018

SP - 8182

EP - 8190

JO - Journal of Physical Chemistry C

JF - Journal of Physical Chemistry C

SN - 1932-7447

IS - 15

ER -