Particles in Gradients Combining Diffusiophoresis and Diffusio-osmosis

Burak Akdeniz

Research output: ThesisPhD Thesis - Research UT, graduation UT

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The aim of this work was to obtain a fundamental understanding of the behavior of diffusiophoresis and diffusio-osmosis in different environments. This knowledge contributes to a fundamental understanding of the concepts of diffusiophoresis and diffusio-osmosis, and may translate to new applications or explain certain events for further studies. Here, we highlight the research carried out in each chapter and discuss the findings.
Chapter 1 presents the basics of diffusiophoresis and diffusio-osmosis in non-electrolyte and electrolyte solutes and the analytical equations that describe the motion. The chapter also presents a broader perspective of polymers, polyelectrolytes, and ion exchange particles. Chapter 2 focuses on the process of diffusiophoresis and diffusio-osmosis in electrolyte-loaded dead-end channels and the change in the electrokinetic parameter, the zeta potential, analyzed in the system. Chapter 3 demonstrates that the concentration dependence of the zeta potential of the particle can be reduced by polyelectrolyte coating. Chapter 4 extends the diffusiophoretic behavior in gradients of excluded molecules such as neutral polymers, polyelectrolytes, and nanoparticles. Chapter 5 focuses on the behaviour of ion exchange particles in salt concentration gradients in the dead-end channel setup. Finally, Chapter 6 provides an overview of all the chapters. It also gives further recommendations on diffusiophoresis in general and highlights possible research directions, guided by the results presented in this thesis.
Original languageEnglish
QualificationDoctor of Philosophy
Awarding Institution
  • University of Twente
  • Lammertink, Rob G.H., Supervisor
  • Wood, Jeff, Co-Supervisor
Award date3 May 2024
Place of PublicationEnschede
Print ISBNs978-90-365-6076-4
Electronic ISBNs978-90-365-6077-1
Publication statusPublished - 2024


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