Photocatalytic Hydrogen Evolution from Aqueous Solutions of Organophosphorous Compounds Full article
| Journal |
International Journal of Hydrogen Energy
ISSN: 0360-3199 , E-ISSN: 1879-3487 |
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| Output data | Year: 2010, Volume: 35, Number: 14, Pages: 7337-7343 Pages count : 7 DOI: 10.1016/j.ijhydene.2010.04.122 | ||||
| Tags | Hydrogen production, Nerve gases simulants destruction, Organophosphorous compounds, Photocatalysis | ||||
| Authors |
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| Affiliations |
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Funding (3)
| 1 | Siberian Branch of the Russian Academy of Sciences | 70 |
| 2 | Президиум РАН | 27.56 |
| 3 | Siberian Branch of the Russian Academy of Sciences | 36 |
Abstract:
Photocatalytic hydrogen production from water solutions of dimethyl methylphosphonate (DMMP), trimethyl phosphate (TMP), triethyl phosphate (TEP), and radiation protective amine WR 2721, that imitate nerve chemical warfare agents was studied for the first time. Platinized titianium dioxide Degussa P25 was used as catalyst. No significant hydrogen evolution was detected without organic electron donors – sacrificial agents.
The hydrogen evolution rate was shown to grow slowly with the rise of initial DMMP concentration. The initial rate vs. DMMP concentration curve is well fitted by Langmuir–Hinshelwood (L-H) equation. The DMMP adsorption constant obtained from the L-H equation fit is markedly higher than that obtained from the Langmuir adsorption isotherm.
Reactions of full destruction into inorganic products of the four organophosphorous compounds were conducted. Amounts of evolved hydrogen and carbon dioxide were completely consistent with stoichiometry of proposed reaction. There were no initial compounds and only trace of total organic carbon after the end of the reaction. Complete water purification and production of an amount of valuable hydrogen was achieved.
Intermediates of DMMP oxygen-free destruction were identified by means of GC/MS. They were the same as those in the case of DMMP photocatalytic oxidation. A mechanism of hydrogen evolution that explains smaller rates of mineralization compared to photocatalytic oxidation by oxygen was proposed.
Cite:
Kozlova E.A.
, Vorontsov A.V.
Photocatalytic Hydrogen Evolution from Aqueous Solutions of Organophosphorous Compounds
International Journal of Hydrogen Energy. 2010. V.35. N14. P.7337-7343. DOI: 10.1016/j.ijhydene.2010.04.122 WOS Scopus РИНЦ ANCAN OpenAlex
Photocatalytic Hydrogen Evolution from Aqueous Solutions of Organophosphorous Compounds
International Journal of Hydrogen Energy. 2010. V.35. N14. P.7337-7343. DOI: 10.1016/j.ijhydene.2010.04.122 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
| Submitted: | Feb 12, 2010 |
| Accepted: | Apr 20, 2010 |
| Published online: | Jun 2, 2010 |
| Published print: | Jul 1, 2010 |
Identifiers:
| Web of science: | WOS:000280616200009 |
| Scopus: | 2-s2.0-77953917168 |
| Elibrary: | 15324917 |
| Chemical Abstracts: | 2010:841297 |
| Chemical Abstracts (print): | 153:370720 |
| OpenAlex: | W1974246907 |