The Effects of Carboxylic Acids on the Aqueous Dispersion and Electrophoretic Deposition of ZrO2
By D. Hanaor, M. Michelazzi, C. Leonelli, C. Sorrell. 2013
649 citations recorded by the source corpus.
The agglomeration, electrokinetic properties and electrophoretic deposition behaviour of aqueous suspensions of ZrO2 with carboxylic acid additives were studied in comparison with conventional pH adjustment. It was found that citric acid imparted negative zeta-potential values and electrosteric stabilisation to particles in suspensions at all pH levels. The examination of additions of carboxylic acids to ZrO2 suspensions revealed that these reagents cause a sharp drop in zeta-potential at distinct addition levels, which correspond to surface saturation of the particles with negatively charged carboxylate groups. Adsorption cross sections of citric acid, EDTA and oxalic acid were evaluated from these results, showing that both citric acid and EDTA coordinate to ZrO2 surfaces by two carboxylate groups while oxalic acid is coordinated by one group. The use of carboxylic acids was shown to facilitate superior electrophoretic deposition in comparison with zeta-potential modification by conventional pH adjustment through improved suspension stability.
Subfields: Electrical and Electronic Engineering, Renewable Energy, Sustainability and the Environment
View Paper: https://www.semanticscholar.org/paper/45046626d70b7761d9aeb51322d19e63d09a8d37
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Citations in the corpus
- Plasma electrolytic oxidation coatings with particle additions – A review (2016, background): “A high zeta potential (absolute value) is desirable in electrophoretic process as this enhances the rate of particle movement under a given electrical field [18].”
- Stability analysis of Al2O3/water nanofluids (2017, methodology): “[13] reported various methods, such as sedimentation method, zeta potential analysis, UV-vis spectrophotometer, transmission electron microscopy (TEM), scanning electron microscopy (SEM), sedimentation balance method, dynamic light scattering method, etc.”