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Titolo:
FATE OF AMINO-ACIDS UPON EXPOSURE TO AQUEOUS TITANIA IRRADIATED WITH UV-A AND UV-B RADIATION - PHOTOCATALYZED FORMATION OF NH3, NO3- AND CO2
Autore:
HIDAKA H; HORIKOSHI S; AJISAKA K; ZHAO J; SERPONE N;
Indirizzi:
MEISEI UNIV,DEPT CHEM,2-1-1 HODOKUBO HINO TOKYO 191 JAPAN CONCORDIA UNIV,DEPT CHEM & BIOCHEM,LAB PURE & APPL STUDIES CATALYSIS ENVIRONM & MAT MONTREAL PQ H3G 1M8 CANADA
Titolo Testata:
Journal of photochemistry and photobiology. A, Chemistry
fascicolo: 2-3, volume: 108, anno: 1997,
pagine: 197 - 205
SICI:
1010-6030(1997)108:2-3<197:FOAUET>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
RADICAL-INDUCED OXIDATION; ORGANIC-COMPOUNDS; WATER INTERFACE; TIO2 PARTICLES; DEGRADATION; PHOTODEGRADATION; IONS; MINERALIZATION; SURFACTANTS; ATRAZINE;
Keywords:
PHOTODEGRADATION; PHOTOOXIDATION; PHOTOCATALYSIS; TITANIUM DIOXIDE; AMINO ACID;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
32
Recensione:
Indirizzi per estratti:
Citazione:
H. Hidaka et al., "FATE OF AMINO-ACIDS UPON EXPOSURE TO AQUEOUS TITANIA IRRADIATED WITH UV-A AND UV-B RADIATION - PHOTOCATALYZED FORMATION OF NH3, NO3- AND CO2", Journal of photochemistry and photobiology. A, Chemistry, 108(2-3), 1997, pp. 197-205

Abstract

The fate of nitrogen in various amino acids was examined following their photooxidative (and/or reductive) transformation catalyzed by UV-Aand UV-B illuminated aqueous TiO2 dispersions. The nitrogens in the amino acids are photoconverted predominantly into NH, (analyzed as NH4+) and to a lesser extent into NO3- ions; NH4+/NO3- ratios span the range 3-12 after ca. 8 h irradiation. Extensive evolution of CO2 is also observed; in some cases it is quantitative. Variations in the NH4+/NO3- ratio in the transformation of amino acids are dependent on the substrates molecular structure. Some of the steps in an otherwise complex mechanism of the heterogeneous photocatalyzedmineralization are described. (C) 1997 Elsevier Science S.A.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 11/07/20 alle ore 13:14:22