Study of spin centers in nanocrystalline titanium dioxide with a high degree of photocatalytic activity

Journal Article · Sun Aug 15 00:00:00 EDT 2010 · Semiconductors

DOI:https://doi.org/10.1134/S106378261008018X· OSTI ID:21562237

Gayvoronskiy, V Ya ^[1]; Timoshenko, V Yu; Kashkarov, P K ^[2]

---

1. National Academy of Science of Ukraine, Institute of Physics (Ukraine)
2. Moscow State University, Physical Department (Russian Federation)

Electron spin resonance spectroscopy is used to study the effects of illumination and changes in temperature on spin centers in nanocrystalline anatase powders synthesized by sol-gel methods with various complexing agents. A correlation between the concentration of oxygen radicals at the surface and the rate of photocatalytic decomposition of organic compounds in the presence of TiO{sub 2} is observed. It is shown that the concentration of centers active in the electron spin resonance spectra can be used for monitoring the photocatalytic activity of TiO{sub 2}.

• OSTI ID: 21562237
• Journal Information: Semiconductors, Vol. 44, Issue 8; Other Information: DOI: 10.1134/S106378261008018X; Copyright (c) 2010 Pleiades Publishing, Ltd.; ISSN 1063-7826
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CHELATING AGENTS
CRYSTALS
DECOMPOSITION
ELECTRON SPIN RESONANCE
MONITORING
NANOSTRUCTURES
ORGANIC COMPOUNDS
OXYGEN
PHOTOCATALYSIS
POWDERS
SOL-GEL PROCESS
SPECTRA
SPECTROSCOPY
SPIN
SURFACES
TITANIUM OXIDES
ANGULAR MOMENTUM
CATALYSIS
CHALCOGENIDES
CHEMICAL REACTIONS
ELEMENTS
MAGNETIC RESONANCE
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PARTICLE PROPERTIES
RESONANCE
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS