Solvothermal synthesis of designed nonstoichiometric strontium titanate for efficient visible-light photocatalysis
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577 (Japan)
SrTiO{sub 3} powders with various Sr/Ti atomic ratios were synthesized by microwave-assisted solvothermal reactions of SrCl{sub 2} and Ti(OC{sub 3}H{sub 7}){sub 4} in KOH aqueous solutions. The nanoparticles of perovskite type SrTiO{sub 3} structure with the particle size of 30-40 nm were synthesized. The photocatalytic activity was determined by deNO{sub x} ability using light emitting diode lamps of various wavelengths such as 627 nm (red), 530 nm (green), 445 nm (blue), and 390 nm (UV). The photocatalytic activity significantly changed depending on the Sr/Ti atomic ratio, i.e., the strontium rich sample (Sr/Ti atomic ratio>1) showed excellent visible light responsive photocatalytic activity for the oxidative destruction of NO.
- OSTI ID:
- 21471002
- Journal Information:
- Applied Physics Letters, Vol. 97, Issue 10; Other Information: DOI: 10.1063/1.3486466; (c) 2010 American Institute of Physics; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
AQUEOUS SOLUTIONS
CUBIC LATTICES
LIGHT EMITTING DIODES
MICROWAVE RADIATION
NANOSTRUCTURES
NITRIC OXIDE
OXIDATION
PARTICLE SIZE
PARTICLES
PHOTOCATALYSIS
PHOTOCHEMISTRY
POTASSIUM HYDROXIDES
STRONTIUM
STRONTIUM CHLORIDES
STRONTIUM TITANATES
SYNTHESIS
VISIBLE RADIATION
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
ALKALINE EARTH METALS
CATALYSIS
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISTRY
CHLORIDES
CHLORINE COMPOUNDS
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DISPERSIONS
ELECTROMAGNETIC RADIATION
ELEMENTS
HALIDES
HALOGEN COMPOUNDS
HOMOGENEOUS MIXTURES
HYDROGEN COMPOUNDS
HYDROXIDES
METALS
MIXTURES
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDES
OXYGEN COMPOUNDS
POTASSIUM COMPOUNDS
RADIATIONS
SEMICONDUCTOR DEVICES
SEMICONDUCTOR DIODES
SIZE
SOLUTIONS
STRONTIUM COMPOUNDS
TITANATES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS