Using the BAT-1 autotitrator to measure the zeta potentials of TiO2 at different pH
This study shows the measurement of zeta potentials of titanium dioxide (TiO2) at different pH levels using the BAT-1 autotitrator. Zeta potential, which depends on the chemical composition and environment, can vary with pH. The TiO2 powder was dispersed in water and subjected to automatic titration with HCl from pH 5.4 to 2 using the BAT-1 autotitrator. Results showed that the zeta potential of TiO2 was positive at low pH, approached zero at pH 3.5 (isoelectric point), and gradually became negative with increasing pH. The BeNano with PALS technique provided accurate and repeatable zeta potential measurements, simplifying the process and improving efficiency.
