Ice Nucleation Properties of Oxidized Carbon Nanomaterials

Whale, Thomas F.; Rosillo‐Lopez, Martin; Murray, Benjamin J.; Salzmann, Christoph G.

doi:10.1021/acs.jpclett.5b01096

Cited by 65 publications

(90 citation statements)

References 40 publications

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“…And indeed, recent experiments by Whale et al 18 provide some tentative support for this hypothesis. Cox et al recently investigated the dependence of the ice nucleation rate as a function of hydrophilicity in the case of model nano-particles 36 .…”

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confidence: 90%

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The Many Faces of Heterogeneous Ice Nucleation: Interplay Between Surface Morphology and Hydrophobicity

et al. 2015

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What makes a material a good ice nucleating agent? Despite the importance of heterogeneous ice nucleation to a variety of fields, from cloud science to microbiology, major gaps in our understanding of this ubiquitous process still prevent us from answering this question. In this work, we have examined the ability of generic crystalline substrates to promote ice nucleation as a function of the hydrophobicity and the morphology of the surface. Nucleation rates have been obtained by brute-force molecular dynamics simulations of coarse-grained water on top of different surfaces of a model fcc crystal, varying the watersurface interaction and the surface lattice parameter. It turns out that the lattice mismatch of the surface with respect to ice, customarily regarded as the most important requirement for a good ice nucleating agent, is at most desirable but not a requirement. On the other hand, the balance between the morphology of the surface and its hydrophobicity can significantly alter the ice nucleation rate and can also lead to the formation of up to three different faces of ice on the same substrate. We have pinpointed three circumstances where heterogeneous ice nucleation can be promoted by the crystalline surface: i) the formation of a water overlayer that acts as an in-plane template; ii) the emergence of a contact layer buckled in an ice-like manner; and iii) nucleation on compact surfaces with very high interaction strength. We hope that this extensive systematic study will foster future experimental work aimed at testing the physiochemical understanding presented herein.

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confidence: 90%

“…[7][8][9][10][11][12][13][14][15][16][17][18]. By doing so, the ice nucleating abilities of a large variety of materials has been characterized 1,19 .…”

Section: Introductionmentioning

confidence: 99%

The Many Faces of Heterogeneous Ice Nucleation: Interplay Between Surface Morphology and Hydrophobicity

et al. 2015

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“…There is also a report of graphene oxide inhibiting ice growth in this concentration range (all growth stopped at 5 mg mL −1 ). [46] Graphene oxide is also known to affect ice nucleation [47,48] ; such dual activity has also been observed for some AFPs. [49]…”

Section: Ice-binding Self-assembled Materialsmentioning

confidence: 99%

Mimicking the Ice Recrystallization Activity of Biological Antifreezes. When is a New Polymer “Active”?

Biggs

Stubbs

Graham

et al. 2019

Macromolecular Bioscience

103

179

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Antifreeze proteins and ice‐binding proteins have been discovered in a diverse range of extremophiles and have the ability to modulate the growth and formation of ice crystals. Considering the importance of cryoscience across transport, biomedicine, and climate science, there is significant interest in developing synthetic macromolecular mimics of antifreeze proteins, in particular to reproduce their property of ice recrystallization inhibition (IRI). This activity is a continuum rather than an “on/off” property and there may be multiple molecular mechanisms which give rise to differences in this observable property; the limiting concentrations for ice growth vary by more than a thousand between an antifreeze glycoprotein and poly(vinyl alcohol), for example. The aim of this article is to provide a concise comparison of a range of natural and synthetic materials that are known to have IRI, thus providing a guide to see if a new synthetic mimic is active or not, including emerging materials which are comparatively weak compared to antifreeze proteins, but may have technological importance. The link between activity and the mechanisms involving either ice binding or amphiphilicity is discussed and known materials assigned into classes based on this.

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“…However, others (e.g. Whale et al, 2015;Lupi et al, 2014aLupi et al, , 2014bBiggs et al, 2017) suggested that a lower degree of oxidation leads to enhanced ice nucleation efficiency.…”

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confidence: 98%

Laboratory study of the heterogeneous ice nucleation on black carbon containing aerosol

Nichman¹,

Wolf²,

Davidovits³

et al. 2018

Preprint

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Black carbon (BC) particles are generated in the incomplete combustion of fossil fuels, biomass, and 15 biofuels. These airborne particles affect air quality, human health, and climate. At present, the climate effects of BC particles are not well understood. Their role in cloud formation is obscured by their chemical and physical variability, and by the internal mixing states of these particles with other compounds. The current study focuses on laboratory measurements of the effectiveness of BC-containing aerosol in the formation of ice crystals in cirrus clouds. Ice nucleation in field studies is often difficult to interpret. Nonetheless, most field studies seem to suggest that BC 20 particles are not efficient ice nuclei (IN). On the other hand, laboratory measurements show that in some cases, BC particles can be highly active IN. By working with well-characterized BC-containing particles, our aim is to systematically establish the factors that govern the IN activity of BC.We examine ice nucleation on BC-containing particles under cirrus cloud conditions, commonly understood to be deposition mode ice nucleation. We study a series of well-characterized commercial carbon black particles with 25 varying morphologies and surface chemistries, as well as ethylene flame-generated combustion soot. The carbon black particles used in this study are proxies for atmospherically relevant BC aerosols. These samples were characterized by electron microscopy, mass spectrometry, and optical scattering measurements. Ice nucleation activity was systematically examined in the temperature range from 217 -235 K, using a SPectrometer for Ice Nuclei (SPIN) instrument, which is a continuous flow diffusion chamber coupled with instrumentation to measure light scattering 30 and polarization. To study the effect of coatings on IN, the BC-containing particles were coated with organic acids found in the atmosphere, namely, stearic acid, cis-pinonic acid, and oxalic acid. The results show significant variations in ice nucleation activity as a function of size, morphology and surface chemistry of the BC-containing particles. The measured IN activity dependence on temperature and the physicochemical properties of the BC-containing particles are consistent with an ice nucleation mechanism of pore 35 condensation followed by freezing. Coatings and surface oxidation modify the initial ice nucleation ability of BCcontaining aerosol. Depending on the BC material and the coating, both inhibition and enhancement in IN activity Atmos. Chem. Phys. Discuss., https://doi.org/10.5194/acp-2018-915 Manuscript under review for journal Atmos. Chem. Phys. Discussion started: 17 September 2018 c Author(s) 2018. CC BY 4.0 License.were observed. Our measurements at low temperatures complement published data, and highlight the capability of some BC particles to nucleate ice under low supersaturation conditions. These results are expected to help refine theories relating to soot IN activation in the atmosphere.

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Ice Nucleation Properties of Oxidized Carbon Nanomaterials

Cited by 65 publications

References 40 publications

The Many Faces of Heterogeneous Ice Nucleation: Interplay Between Surface Morphology and Hydrophobicity

The Many Faces of Heterogeneous Ice Nucleation: Interplay Between Surface Morphology and Hydrophobicity

Mimicking the Ice Recrystallization Activity of Biological Antifreezes. When is a New Polymer “Active”?

Laboratory study of the heterogeneous ice nucleation on black carbon containing aerosol

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