Synergistic interactions of Cu and N on surface altered amorphous TiO2 nanoparticles for enhanced photocatalytic oxidative desulfurization of dibenzothiophene

Amorphous TiO2 (AT) nanoparticles were prepared by a simple sol–gel method and subsequent incorporation with 5–20 wt% copper via an electrochemical method in the presence of tetraethylammonium perchlorate gave an active CuO/TiO2 (CAT) photocatalyst.

Spectrophotometric Study of Complexation Between Some New N2O2-Schiff Bases and Some Transition Metal Ions in Nonaqueous Solvents

The complexation reaction between some transition and heavy metal cations and some new N2O2Schiff bases in acetonitrile (AN) or methanol (MeOH) as nonaqueous solvents at 25°C and 0.05 M tetraethylammonium perchlorate (TEAP) were investigated by spectrophotometric method. The stoichiometry and overall stability constants of complexes have been evaluated by computer refinement of abs-mole ratio data, using the KINFIT program. All investigated metal ions form 1:1 ML, 1:2 ML2or 2:1 M2L complexes with studied ligands. The effect of structure on the complexation was investigated.

STUDY ON THE SOLID-STATE ELECTROCHEMICAL SENSOR TECHNIQUES FOR THE DETECTION OF CO2 AND O2 GASES

A new type of solid-state electrochemical sensor was studied in this paper. By mixing proper content of polyacrylonitrile (PAN)-Polyvinylpyrrolidone (PVP)-Dimethylsulfoxide (DMSO)-Tetraethylammonium perchlorate (TEAP), an elastic and porous polymeric solid electrolyte was developed. According to the microelectrode theory and modulated pulse potential technique, an electrochemical sensor that can realize the synchronous and fast detection of CO 2 and O 2 at room temperature was designed. Experimental data showed that this polymer electrolyte exhibited ionic conductivity of the order of 10-4 S/cm at room temperature, and also showed that the sensor had many advantages such as small volume, convenient usage and certain extent stability.