Photoinduced processes of hydrogen peroxide formation and decomposition and their role in photosynthesis and biosphere origin

Autor:	A. V. Lobanov, G. G. Komissarov
Rok vydání:	2014
Předmět:	chemistry.chemical_compound Geophysics Aqueous solution chemistry Geochemistry and Petrology Silica gel Chlorophyll Photocatalysis Phthalocyanine Photosynthesis Hydrogen peroxide Photochemistry Decomposition
Zdroj:	Geochemistry International. 52:1239-1251
ISSN:	1556-1968 0016-7029
DOI:	10.1134/s0016702914130060
Popis:	Processes of mutual photocatalytic transformation of O2 and H2O2 in aqueous suspensions of chlorophyll and phthalocyanine immobilized on silica gel were investigated with application to the problem of the origin and evolution of the biosphere. It was demonstrated that chlorophyll affects the processes of H2O2 generation in water saturated in air oxygen and H2O2 decomposition in water upon illumination. The efficiency of these photocatalytic processes was shown to depend on pH of the medium and the amount of the pigment coating the substrate surface. The formation of organic products was detected at the irradiation of the suspensions of chlorophyll (phthalocyanine)/silica gel/water containing H2O2 and an inorganic carbon source.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::48768b780d83c17d5bdf25222adf9bcd https://doi.org/10.1134/s0016702914130060 Zobrazit plný text záznamu Full text from SpringerLink