2026-09-19T21:40:28Zhttps://ecommons.cornell.edu/server/oai/requestoai:ecommons.cornell.edu:1813/1158732026-09-09T20:08:31Zcom_1813_35col_1813_47
Wokas, Fairus
Zax, David
Giannelis, Emmanuel
2024-11-05T19:42:59Z
2024-05
ProQuest Submission ID: 12093
ProQuest Publication ID: 31242970
https://hdl.handle.net/1813/115873
https://doi.org/10.7298/b066-jn53
16575580
60 pages
Carbon dots (CDs) are promising for enhanced oil recovery, medical and environmental applications, but the successful implementation of CDs in these fields needs a comprehensive understanding of their transport behavior within solvent gradients and their influence on interfacial tension and surface wettability. In this study, stable carbon dots (CDs), 4-10 nm in size with -7 mV zeta potential, have been synthesized through pyrolysis of citric acid and ethanolamine. The diffusiophoretic behavior of CDs was observed in both deionized water (DI) and seawater (SW), where CDs can move with or against solvent gradients. Additionally, CDs’ ability in altering surface wettability and interfacial tension (IFT) with notable jamming at high concentrations was recorded, highlighting the CDs’ capability in stabilizing emulsions, which further confirmed through laser confocal microscopy. This comprehensive exploration of CDs’ properties and behavior offer valuable insights into their applicability in fields requiring controlled transport and stability in fluid systems.
2026-06-17
en
Carbon Dots
Diffusiophoresis
Interfacial Tension
Nanomaterials
Oil-Water Interfaces
Wettability
INVESTIGATION OF CARBON DOTS BEHAVIOR: DIFFUSIOPHORESIS AND INFLUENCE ON THE OIL-WATER INTERFACES
dissertation or thesis
https://newcatalog.library.cornell.edu/catalog/16575580
application/pdf
Chemistry and Chemical Biology
Cornell University
Master of Science
M.S., Chemistry and Chemical Biology
https://hdl.handle.net/1813/59810.2
Publication
Cornell Theses and Dissertations
Wokas, Fairus
5893a6ea-7af3-41d7-abc6-04bcd26ab5df
open.access
open.access
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<Keyword>Carbon Dots</Keyword>
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<Abstract>Carbon dots (CDs) are promising for enhanced oil recovery, medical and environmental applications, but the successful implementation of CDs in these fields needs a comprehensive understanding of their transport behavior within solvent gradients and their influence on interfacial tension and surface wettability. In this study, stable carbon dots (CDs), 4-10 nm in size with -7 mV zeta potential, have been synthesized through pyrolysis of citric acid and ethanolamine. The diffusiophoretic behavior of CDs was observed in both deionized water (DI) and seawater (SW), where CDs can move with or against solvent gradients. Additionally, CDs’ ability in altering surface wettability and interfacial tension (IFT) with notable jamming at high concentrations was recorded, highlighting the CDs’ capability in stabilizing emulsions, which further confirmed through laser confocal microscopy. This comprehensive exploration of CDs’ properties and behavior offer valuable insights into their applicability in fields requiring controlled transport and stability in fluid systems.</Abstract>
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