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Titolo:
Photooxidation of dimethyl methylphosphonate on TiO2 powder
Autore:
Rusu, CN; Yates, JT;
Indirizzi:
Univ Pittsburgh, Ctr Surface Sci, Dept Chem, Pittsburgh, PA 15260 USA UnivPittsburgh Pittsburgh PA USA 15260 pt Chem, Pittsburgh, PA 15260 USA
Titolo Testata:
JOURNAL OF PHYSICAL CHEMISTRY B
fascicolo: 51, volume: 104, anno: 2000,
pagine: 12299 - 12305
SICI:
1520-6106(200012)104:51<12299:PODMOT>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
PHOTOCATALYTIC DECOMPOSITION; ORGANOPHOSPHORUS COMPOUNDS; PHOSPHORUS-COMPOUNDS; IR SPECTROSCOPY; MAGNESIUM-OXIDE; ALUMINUM-OXIDE; DEFECT SITES; FT-IR; ADSORPTION; SURFACES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
46
Recensione:
Indirizzi per estratti:
Indirizzo: Yates, JT Univ Pittsburgh, Ctr Surface Sci, Dept Chem, Pittsburgh, PA 15260 USA Univ Pittsburgh Pittsburgh PA USA 15260 ittsburgh, PA 15260 USA
Citazione:
C.N. Rusu e J.T. Yates, "Photooxidation of dimethyl methylphosphonate on TiO2 powder", J PHYS CH B, 104(51), 2000, pp. 12299-12305

Abstract

The photooxidation of dimethyl methylphosphonate (DMMP) on powdered TiO2 has been studied using UV irradiation in the range 2.1 eV to 5.0 eV. It has been found that the P-CH3 and the P-OCH3 moieties are destroyed together byphotooxidation, producing adsorbed CO and CO2 as well as formate ions and water. By working at 200 K the photooxidation process has been studied alone, whereas at room temperature both hydrolysis and photooxidation will occur together. An adsorbed PO3 species is the final phosphorus-containing photooxidation product. High coverages of DMMP are not photooxidized due to site blockage for O-2 adsorption on the TiO2 surface.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/09/20 alle ore 10:33:42