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Nanoparticle Surface Charge

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Questions and Answers

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

Contact angle measurement

Hydrophobic interaction chromatography (HIC)

Zeta potential (correct)

Octanol–water partitioning

What determines the extent to which a nanomaterial can be dispersed in a medium?

Ligand shell composition

Hydrophobicity of the nanomaterial surface (correct)

Surface charge density

Electrical double layer (EDL) thickness

What is the result of highly positively- or negatively charged particles in an aqueous environment?

Neutral colloidal dispersions

Stable colloidal dispersions (correct)

Unstable colloidal dispersions

Aggregated colloidal dispersions

What is the purpose of measuring the surface charge density of nanoparticles?

To determine the colloidal stability of nanoparticles Signup and view all the answers

How can the surface charge density of nanoparticles change?

Through changes in either the external environment or interactions with biomolecules Signup and view all the answers

What is the term for the layer that forms around nanoparticles in an aqueous environment, leading to stable colloidal dispersions?

Electrical double layer (EDL) Signup and view all the answers

What is the role of hydrophobicity in the biological milieu?

It affects the composition of the protein corona Signup and view all the answers

What method is used to measure the hydrophobicity of nanomaterials?

Contact angle measurement Signup and view all the answers