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Acidic Hydrogen Enhanced Photocatalytic Reduction of CO2 on Planetary Surfaces
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SYSNO ASEP 0536891 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Acidic Hydrogen Enhanced Photocatalytic Reduction of CO2 on Planetary Surfaces Tvůrce(i) Knížek, Antonín (UFCH-W) ORCID, RID, SAI
Kubelík, Petr (UFCH-W) RID, ORCID
Bouša, Milan (UFCH-W) RID, ORCID
Ferus, Martin (UFCH-W) ORCID, RID
Civiš, Svatopluk (UFCH-W) RID, ORCID, SAIZdroj.dok. ACS Earth and Space Chemistry. - : American Chemical Society - ISSN 2472-3452
Roč. 4, č. 7 (2020), s. 1001-1009Poč.str. 9 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova diffuse-reflectance measurements ; oxygen-isotope exchange ; carbon-dioxide ; band-gap ; tio2 ; methane ; mechanisms ; conversion ; complexes ; photocatalytic reduction of CO2 ; IR spectroscopy ; photocatalysis ; natural minerals ; reflectance ; band gap ; rate constant ; acidic conditions Vědní obor RIV CF - Fyzikální chemie a teoretická chemie Obor OECD Physical chemistry CEP GA19-03314S GA ČR - Grantová agentura ČR EF16_019/0000778 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Způsob publikování Omezený přístup Institucionální podpora UFCH-W - RVO:61388955 UT WOS 000551545600006 EID SCOPUS 85088695421 DOI 10.1021/acsearthspacechem.0c00039 Anotace The photocatalytic reduction of CO2 to CH4 is a chemical process that to some extent occurs on the surface of rocky planets. The effect of an acidic proton on the rate of the photocatalytic reduction of CO2 on mineral surfaces was explored through the addition of HCl to our reaction system. HCl serves a dual role: it is a Hdonor (reactant) and creates a band gap in the case of siderite and kaolinite (modifies the chemical environment of the reaction). Of the tested minerals, Al2O3, ilmenite (FeTiO3), and one sample of soil containing fossilized remains of diatoms from the Soos Nature Reserve (Czech Republic) have shown significant activity in the methanogenesis process. Kaolinite, natural rutile, MgO, basalt, acidic and ferrous synthetic clays, the Nakhla meteorite, and two diatomaceous earth samples from the Soos Nature Reserve showed weak photocatalytic properties, the reaction was slower than that on, e.g., Al2O3. The newly recognized photocatalytic activity of some of these natural minerals and the effect of the acidic proton should be included in the atmospheric models of both our planet and exoplanets alike, as it may play a role in the estimation of methane production from CO2 in the presence of minerals on the planetary surface upon UV radiation. Pracoviště Ústav fyzikální chemie J.Heyrovského Kontakt Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Rok sběru 2021 Elektronická adresa http://hdl.handle.net/11104/0314646
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