Method of electric arc synthesis composite microparticles metal-semiconductor-dielectric based on titanium, titanium nitride and rutile with productivity up to 10 g/min is proposed. Using diffraction microscopic methods, the morphology structural-phase composition synthesized were studied. example methylene blue degradation, photocatalytic activity in visible radiation range was demonstrated it...

We can summarize the benefits of water photocatalysis by two words: clean energy and purification pollutants, its problems as large gap electron–hole recombination. Scientists are still looking for a semiconductor whose lies in visible region, with pairs longer life time. One proposed solutions this field is combining available semiconductors (such TiO2) metal plasmonic properties. The existing...

Low-carbon number alcohols (LCNAs) are important platform molecules that can be derived from many resources, such as coal, oil, natural gas, biomass, and CO2, creating a route to value-added chemicals fuels. Semiconductor photocatalysis provides novel method for converting LCNAs into variety of downstream products. Photocatalysis is initiated by light-excited charge carriers highly oxidative re...

TheABCs of empirical chemical kinetics are highlighted from the scratch. Aspects of dynamics regarding charge carrier trapping and recombination are essential part of this discussion. The effect of imposition of external constrains such as temperature of the reactivity solution, concentration of the subject compound, intensity and wavelength of light on photocatalytic degradation system is emph...

Copper ions in aqueous solution are known to promote organic oxidation semiconductor photocatalysis, but the counter anions seem be important as well. In this work, performance of Cu(ClO4)2 presence several sodium forms (F−, Cl−, ClO4−, NO3−, and SO42−) has been examined. Phenol (pH 4) under UV light was used model reaction TiO2 anatase (AT) rutile (RT) photocatalysts. On addition 0.1–5 mM Cu2+...

We propose a general reaction mechanism for the pyridine (Py)-catalyzed reduction of CO2 over GaP(111), CdTe(111), and CuInS2(112) photoelectrode surfaces. This mechanism proceeds via formation of a surface-bound dihydropyridine (DHP) analogue, which is a newly postulated intermediate in the Py-catalyzed mechanism. Using density functional theory, we calculate the standard reduction potential r...

In a conventional photocatalytic or photochemical process, either a photocatalyst or a molecule is excited by irradiation light that has energy greater than the forbidden band (i.e., the band gap) of the semiconductor or the transition energy of an excited state of the molecule, respectively, for a reaction to occur. However, in this work, we found that a considerable amount of H2 can be genera...

Two-photon photoemission (2PPE) has been widely used in the study of electronic structure and dynamics of unoccupied electronic states on different types of surfaces and interfaces. Since 2PPE probes electronically excited states, it should be sensitive to surface excited electronic structure changes that accompany surface chemical reactions. Therefore, this method could potentially be used to ...