Synthesis of Multiphase Au/Cd0.6Zn0.4S/ZnS Photocatalysts for Improved Photocatalytic Performance Научная публикация
| Журнал |
International Journal of Hydrogen Energy
ISSN: 0360-3199 , E-ISSN: 1879-3487 |
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| Вых. Данные | Год: 2019, Том: 44, Номер: 42, Страницы: 23589-23599 Страниц : 11 DOI: 10.1016/j.ijhydene.2019.07.081 | ||||
| Ключевые слова | Cd1-xZnxS; Photocatalytic hydrogen production; Photoelectrochemical properties; Visible light | ||||
| Авторы |
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| Организации |
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Информация о финансировании (1)
| 1 | Федеральное агентство научных организаций России | 0303-2016-0016 |
Реферат:
Novel composite photocatalysts consisting of a cadmium and zinc sulfide solid solution (Cd0.6Zn0.4S) and zinc sulfide (ZnS) nanoparticles were successfully prepared by a simple hydrothermal treatment of suspended Cd0.3Zn0.7S at 120 °C. The as-obtained materials were characterized by X-ray diffraction, X-ray photoelectron spectroscopy, and UV-VIS diffuse reflection spectroscopy. The obtained photocatalysts were tested in the photocatalytic evolution of hydrogen from a Na2S/Na2SO3 aqueous solution under visible light irradiation (λ = 450 nm). It is shown that the hydrothermal treatment of Cd0.3Zn0.7S at 120 °C increases the activity by a factor of 7.5 due to the phase transformations of the solid solution with the formation of the multiphase Cd0.6Zn0.4S/ZnS sample. The deposition of gold on the surface of Cd0.6Zn0.4S/ZnS leads to a further increase in activity: the achieved photocatalytic activity and quantum efficiency (450 nm) for 1%Au/Cd0.6Zn0.4S/ZnS are 17.4 mmol g−1 h−1 and 42.6%, respectively. This excellent performance is found to be attributable to the transformation of Cd1-xZnxS from the cubic to the hexagonal phase during the hydrothermal treatment. Additionally, photoelectrodes based on Cd0.6Zn0.4S/ZnS and FTO were synthesized and tested in a two-electrode cell. A high value of the photocurrent equal to 0.5 mA/cm2 is achieved for the Cd0.6Zn0.4S/ZnS/FTO electrode. An investigation by means of impedance spectroscopy reveals the longer lifetime of photogenerated charge carriers in the Cd0.6Zn0.4S/ZnS/FTO photoelectrode if to compare with Cd0.3Zn0.7S/FTO system. © 2019 Hydrogen Energy Publications LLC
Библиографическая ссылка:
Kozlova E.A.
, Gribov E.N.
, Kurenkova A.Y.
, Cherepanova S.V.
, Gerasimov E.Y.
, Kozlov D.V.
Synthesis of Multiphase Au/Cd0.6Zn0.4S/ZnS Photocatalysts for Improved Photocatalytic Performance
International Journal of Hydrogen Energy. 2019. V.44. N42. P.23589-23599. DOI: 10.1016/j.ijhydene.2019.07.081 WOS Scopus РИНЦ CAPlus OpenAlex
Synthesis of Multiphase Au/Cd0.6Zn0.4S/ZnS Photocatalysts for Improved Photocatalytic Performance
International Journal of Hydrogen Energy. 2019. V.44. N42. P.23589-23599. DOI: 10.1016/j.ijhydene.2019.07.081 WOS Scopus РИНЦ CAPlus OpenAlex
Даты:
| Поступила в редакцию: | 13 мар. 2019 г. |
| Принята к публикации: | 9 июл. 2019 г. |
| Опубликована online: | 8 авг. 2019 г. |
| Опубликована в печати: | 1 сент. 2019 г. |
Идентификаторы БД:
| Web of science: | WOS:000486096400006 |
| Scopus: | 2-s2.0-85070230039 |
| РИНЦ: | 41625110 |
| Chemical Abstracts: | 2019:1503215 |
| OpenAlex: | W2964879760 |