Sökning: WFRF:(Lewin Erik Dr. 1979 ) >
Unveiling the role ...
Unveiling the role of bisulfide in the photocatalytic splitting of H2S in aqueous solutions
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- Oladipo, Habeebllah (författare)
- Khalifa Univ Sci & Technol, Dept Chem Engn, POB 127788, Abu Dhabi, U Arab Emirates.;Khalifa Univ Sci & Technol, Res & Innovat CO2 & H2 RICH Ctr, POB 127788, Abu Dhabi, U Arab Emirates.
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- Garlisi, Corrado (författare)
- Khalifa Univ Sci & Technol, Dept Chem Engn, POB 127788, Abu Dhabi, U Arab Emirates.
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- Sá, Jacinto (författare)
- Uppsala universitet,Fysikalisk kemi
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- Lewin, Erik, Dr. 1979- (författare)
- Uppsala universitet,Oorganisk kemi
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- Al-Ali, Khalid (författare)
- Khalifa Univ Sci & Technol, Dept Chem Engn, POB 127788, Abu Dhabi, U Arab Emirates.;Khalifa Univ Sci & Technol, Res & Innovat CO2 & H2 RICH Ctr, POB 127788, Abu Dhabi, U Arab Emirates.
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- Palmisano, Giovanni (författare)
- Khalifa Univ Sci & Technol, Dept Chem Engn, POB 127788, Abu Dhabi, U Arab Emirates.;Khalifa Univ Sci & Technol, Res & Innovat CO2 & H2 RICH Ctr, POB 127788, Abu Dhabi, U Arab Emirates.
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Khalifa Univ Sci & Technol, Dept Chem Engn, POB 127788, Abu Dhabi, U Arab Emirates;Khalifa Univ Sci & Technol, Res & Innovat CO2 & H2 RICH Ctr, POB 127788, Abu Dhabi, U Arab Emirates. Khalifa Univ Sci & Technol, Dept Chem Engn, POB 127788, Abu Dhabi, U Arab Emirates. (creator_code:org_t)
- ELSEVIER, 2020
- 2020
- Engelska.
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Ingår i: Applied Catalysis B. - : ELSEVIER. - 0926-3373 .- 1873-3883. ; 270
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Anaerobic photocatalytic conversion of aqueous H2S to H-2 was tested on Pt-decorated N-doped TiO2 grown on graphene. The hydrogen production increased linearly (rate: 32.3 mu mol/h/g, quantum yield: 1.4 x 10(-4)) with HS- concentration, until the critical value of 0.029 mol/dm(3), after which it declined to negligible values. The latter was attributed to photon-blockage caused by sulfur-containing species formed on catalyst surface, which could be removed by simple washing of the catalyst leading to its regeneration, as highlighted by the characterization of fresh and used catalyst. Similar tests performed at constant HS- concentration and variable pH did not yield a correlation, thus suggesting HS- as the major source of H-2, and not H+. A new kinetic model assessing the competitive adsorption mechanism reiterated the important role of sulfide ionic species in hydrogen production. A strong correlation between the latter and HS- concentration was established based on the reactivity results and proposed mechanism.
Ämnesord
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
Nyckelord
- Photocatalysis
- Hydrogen
- Platinum-modified TiO2
- H2S splitting
- Bisulfide ion
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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