Nanoparticle Surface Charge: Zeta Potential

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Questions and Answers

What is the most commonly used technique to measure the surface charge of nanoparticles?

  • Hydrophobic interaction chromatography
  • Zeta potential (correct)
  • Octanol-water partitioning
  • Contact angle measurement

What is the effect of highly positively- or negatively charged particles on colloidal dispersions?

  • They form stable colloidal dispersions (correct)
  • They have no effect on colloidal dispersions
  • They form unstable colloidal dispersions
  • They increase the hydrophobicity of the nanomaterials

What can cause a change in the surface charge density of nanoparticles?

  • Only interactions with biomolecules
  • Neither the external environment nor interactions with biomolecules
  • Only the external environment
  • Both the external environment and interactions with biomolecules (correct)

What is a key indicator for colloidal stability?

<p>Zeta potential (D)</p> Signup and view all the answers

What dictates the dispersion of nanomaterials in a medium?

<p>Hydrophobicity (C)</p> Signup and view all the answers

What is the significance of hydrophobicity in the biological milieu?

<p>It influences the composition of protein corona (A)</p> Signup and view all the answers

What is one of the methods to measure the hydrophobicity of nanomaterials?

<p>Contact angle measurement (B)</p> Signup and view all the answers

What is the impact of hydrophobicity on the fate of nanomaterials?

<p>It affects the transport, uptake, toxicity, and fate of nanomaterials (B)</p> Signup and view all the answers

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