Determination of monolayer density by potentiometric titration

Article Abstract:

A potentiometric titration that is based on the neutralization of surface carboxylic groups originating from the functionalization of nanosized maghemite particles is presented. A solution of potassium hydroxide in water was used as the titrant, while the dimethylformamide as the titration medium. Results revealed a reproducible packing density of 3.4 micromol of DBSC-10/m2 of maghemite. Infrared measurements confirmed the finding that tritation has no effect on the stability of the monolayer at higher pHs.

Research, Surface chemistry, Carboxylic acids, Volumetric analysis, Dimethylformamide

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Potentiometric mass titrations: experimental and theoretical establishment of a new technique for determining the point of zero charge (PZC) of metal (hydr)oxides

Article Abstract:

A novel methodology, called the potentiometric mass titration (PMT) technique, for determining the point of zero charge (pzc) of mineral hydr(oxides) immersed in electrolytic solutions. The comparison of the pzc values determined by PMT, with the corresponding ones determined using the traditional methodologies, and strongly suggested that the PMT technique can be used to determine the pzc of oxides.

Electrochemical analysis, Potentiometry

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Growth of oxide nanorod arrays through sol electrophoretic deposition

Article Abstract:

A process for the growth of oxide nanorod arrays that combines sol preparation and template-based electrophoretic deposition is introduced. A demonstration that single crystalline oxide nanorod arrays could be grown through either homoepitaxial aggregation or surface condensation induced by water hydrolysis is presented.

Analysis, Hydrolysis, Electrophoretic deposition

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