Ti/PbO2/Sb2O3 electrode was used as indicator electrode in potentiometric and conductometric titration in aqueous solution at 298 K. The E-pH curve is linear with a slope of 0.0505 V/dec at 298 K which is close to the theoretical value 2.303RT/F (0.059 V at 298 K). The standard potential of this electrode, E, is computed with respect to the SCE as reference electrode. The recovery percentages f...

The photochemical reduction of Ag and oxidation of Pb from aqueous solution by SrTiO3 leave insoluble reaction products (silver and PbO2, respectively) on the surface. Microscopic analysis has been used to relate the rates of these two reactions to the structure and orientation of SrTiO3 surfaces. The nonpolar (100) surface is the most reactive for silver reduction and the composition of the te...

The application of pressure in solid-state synthesis provides a route for the creation of new and exciting materials. However, the onerous nature of high-pressure techniques limits their utility in materials discovery. The systematic search for novel oxynitrides-semiconductors for photocatalytic overall water splitting-is a representative case where quench high-pressure synthesis is useful and ...

Notes 1. Alternatively, grease and organic materials can be removed by heating platinum electrodes to redness in a flame. Do not touch electrode surfaces with your fingers after cleaning because grease and oil cause nonadherent deposits that can flake off during washing and weighing. 2. Chloride ion must be totally excluded from this determination because it attacks the platinum anode during el...

The H2O splitting mechanism is a very attractive alternative used in electrochemistry for the formation of O3. The most efficient catalysts employed for this reaction at room temperature are SnO2-based, in particular the Ni/Sb-SnO2 catalyst. In order to investigate the H2O splitting mechanism density functional theory (DFT) was performed on a Ni/Sb-SnO2 surface with oxygen vacancies. By calcula...

In Mexico, atrazine is widely used in agriculture to control broadleaf weeds. The objective of this research was compare removal water and energy consumption between an up-flow cylinder electro-oxidation reactor (UCER) rectangular (URER) using the response surface methodology. each reactor, two titanium (Ti) mesh electrodes (cathodes) one Titanium-Lead Dioxide (Ti-PbO2) electrode (anode). Curre...

When a proton reduction cocatalyst is loaded on an n-type semiconductor for photocatalytic overall water splitting (POWS), the location of oxidation sites generally considered at surface due to upward band-bending which may ease transfer photogenerated holes surface. However, this not case Pt/SrTiO3, model based photocatalyst POWS. It was found that are more readily accumulated interface betwee...