INVESTIGATION OF CARBON DOTS BEHAVIOR: DIFFUSIOPHORESIS AND INFLUENCE ON THE OIL-WATER INTERFACES

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.

Name thesis:degree_name

M.S., Chemistry and Chemical Biology

Level thesis:degree_level

Master of Science

Discipline thesis:degree_discipline

Chemistry and Chemical Biology

Grantor

Cornell University

Year dc:date.issued

2024

Author dc:creator

• Wokas, Fairus

Committee member dc:contributor.committeemember

• Giannelis, Emmanuel

• Carbon Dots
• Diffusiophoresis
• Interfacial Tension
• Nanomaterials
• Oil-Water Interfaces
• Wettability

Language dc:language.iso

en

DOI

https://doi.org/10.7298/b066-jn53

Dc Identifier Other

ProQuest Submission ID: 12093
ProQuest Publication ID: 31242970

OAI identifier oai:identifier

oai:ecommons.cornell.edu:1813/115873