Using the BAT-1 autotitrator to measure the zeta potentials of Al2O3 at different pH

The use of alumina (Al2O3) as a versatile material has prompted research on its stability under different surface modifications. Zeta potential, which depends on the chemical composition and pH of the medium, is an important parameter to assess stability. The BAT-1 autotitrator and BeNano analyzer were employed to measure the zeta potential of Al2O3 particles at different pH levels. The results indicated that the isoelectric point of the Al2O3 system was at pH 6.8, with lower zeta potential magnitudes suggesting instability near this point. Higher pH levels (10-12) exhibited higher zeta potential magnitudes and greater system stability due to stronger electrostatic forces.

Product: 

BeNano Series     BAT-1 Autotitrator 

Industry: 

Chemicals

Sample:

Aluminum oxide

Measurement Type: 

Zeta Potential

Measurement by Technology: 

Electrophoretic Light Scattering