New Insights into the Mechanism of Photocatalytic Hydrogen Evolution from Aqueous Solutions of Saccharides over CdS-Based Photocatalysts under Visible Light Full article
| Journal |
International Journal of Hydrogen Energy
ISSN: 0360-3199 , E-ISSN: 1879-3487 |
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| Output data | Year: 2020, Volume: 45, Number: 55, Pages: 30165-30177 Pages count : 13 DOI: 10.1016/j.ijhydene.2020.08.133 | ||
| Tags | Photocatalysis; Cd1-xZnxS; Solar hydrogen; Biomass; Sustainable energy | ||
| Authors |
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| Affiliations |
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Funding (2)
| 1 | Federal Agency for Scientific Organizations | 0303-2016-0016 |
| 2 | Russian Foundation for Basic Research | 19-43-543009 |
Abstract:
A new multiphase photocatalyst – 1%Pt/Cd0.6Zn0.4S/Cd0.1Zn0.9S – was synthesized by a simple hydrothermal treatment of as-prepared Cd0.3Zn0.7S solid solution and thoroughly characterized by different methods. The activity was tested in a sustainable process of hydrogen evolution from aqueous solutions of two saccharides (glucose and xylose) under visible light. The mechanism of the photocatalytic hydrogen evolution from complex organic substrates is still controversial. In this research it was shown that optimizing the experimental conditions (pH, substrate concentration) leads to a significant increase in the photocatalytic activity for both saccharides. A kinetic equation based on a Langmuir model and including the degree of dissociation of the substrate was proposed and verified for the first time. The highest activities during hydrogen evolution for glucose and xylose were achieved in strongly alkaline media. The photocatalyst 1%Pt/CdZnS120 possessed an activity equal to 3.4 mmol H2 h−1 g−1 (glucose, apparent quantum efficiency 8.4%), that exceeds recently reported values.
Cite:
Kurenkova A.Y.
, Markovskaya D.V.
, Gerasimov E.Y.
, Prosvirin I.P.
, Cherepanova S.V.
, Kozlova E.A.
New Insights into the Mechanism of Photocatalytic Hydrogen Evolution from Aqueous Solutions of Saccharides over CdS-Based Photocatalysts under Visible Light
International Journal of Hydrogen Energy. 2020. V.45. N55. P.30165-30177. DOI: 10.1016/j.ijhydene.2020.08.133 WOS Scopus РИНЦ AN OpenAlex
New Insights into the Mechanism of Photocatalytic Hydrogen Evolution from Aqueous Solutions of Saccharides over CdS-Based Photocatalysts under Visible Light
International Journal of Hydrogen Energy. 2020. V.45. N55. P.30165-30177. DOI: 10.1016/j.ijhydene.2020.08.133 WOS Scopus РИНЦ AN OpenAlex
Dates:
| Submitted: | Jun 24, 2020 |
| Accepted: | Aug 15, 2020 |
| Published online: | Sep 8, 2020 |
| Published print: | Nov 6, 2020 |
Identifiers:
| Web of science: | WOS:000582322100020 |
| Scopus: | 2-s2.0-85090486423 |
| Elibrary: | 45308262 |
| Chemical Abstracts: | 2020:1738929 |
| OpenAlex: | W3084385499 |