Aminopolycarboxylic acids as a versatile tool to stabilize ceria nanoparticles-a fundamental model experimentally demonstrated

• An extremely stable water dispersion of cerium oxide nanoparticles was prepared by colloidal synthesis, using nitrilotriacetic acid (NTA) as a stabilizer. Based on FT-IR measurements, the surface characteristics of NTA-stabilized ceria nanoparticles are clarified and a fundamental stabilization mechanism is proposed. The mechanism is based on the combination of the ionic nature of cerium oxide surface and the inner-sphere complexation model. From an application perspective it is remarkable that ceria nanoparticle dispersions stabilized by NTA are stable at neutral pH, which makes them a potential successful additive in UV screening applications.

Ämnesord

NATURVETENSKAP  -- Kemi (hsv//swe)

NATURAL SCIENCES  -- Chemical Sciences (hsv//eng)

Nyckelord

Nuclear-Magnetic-Resonance

Outer-Sphere

Aminocarboxylate Ligands

Lanthanide Complexation

Trivalent Lanthanide

Oxide Nanoparticles

Actinide Ions

Fuel-Cell

CEO2

Thermodynamics

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