Titanium Hydr oxides

Titanium(iv) forms precipitates containing various amounts of water. Calcined TiO2 often has an O Ti atomic ratio slightly lower than 2. PZCs/IEPs of titanium (hydr)oxides are presented in Tables 3.957 through 3.1091. 

Titania occurs as rutile or anatase, and studies of brookite are rare. Reference [1973] suggests that the PZC of rutile is lower than that of anatase by 1 pH unit. A compilation of PZCs/IEPs focused on the difference between rutile and anatase can be found in [1974]. lEPs are compiled in [404]. Electrokinetic and surface charging behavior of titania is reviewed in [734]. 

Unwashed sample had negative potentials at pH 3-11, except for two positive values observed at pH = 6. The numerical values of two lEPs reported in [360] are based on arbitrary interpolation. IEP roughly matches a maximum in viscosity of 38 mass% dispersion. 

Acid- and base-washed Acid- and base-washed 

Acid- and base-washed 0.003 M NaNO, 25 iep Acoustosizer Matec 6.4 [423] 

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Bogdanova, N.E et al.. Tin- and titanium-oxygen nanostructmes on the various hydr(oxides) surfaces. Colloid J., 66, 418, 2004. 

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