Copper-Modified Titania-Based Photocatalysts for the Efficient Hydrogen Production under UV and Visible Light from Aqueous Solutions of Glycerol Full article
| Journal |
Nanomaterials
, E-ISSN: 2079-4991 |
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| Output data | Year: 2022, Volume: 12, Number: 18, Article number : 3106, Pages count : 16 DOI: 10.3390/nano12183106 | ||||
| Tags | photocatalysis; hydrogen evolution; titanium dioxide; anatase; rutile | ||||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Russian Science Foundation | 19-73-20020 |
Abstract:
In this study, we have proposed titania-based photocatalysts modified with copper compounds for hydrogen evolution. Thermal pre-treatment of commercial TiO2 Degussa P25 (DTiO2) and Hombifine N (HTiO2) in the range from 600 to 800 °C was carried out followed by the deposition of copper oxides (1–10 wt. % of Cu). The morphology and chemical state of synthesized photocatalysts were studied using X-ray diffraction, UV–Vis diffuse reflectance spectroscopy, high-resolution transmission electron microscopy, X-ray photoelectron spectroscopy, and XANES/EXAFS X-ray absorption spectroscopy. Photocatalytic activity was tested in the hydrogen evolution from aqueous solutions of glycerol under ultraviolet (λ = 381 nm) and visible (λ = 427 nm) light. The photocatalysts 2% CuOx/DTiO2 T750 and 5% CuOx/DTiO2 T700 showed the highest activity under UV irradiation (λ = 380 nm), with the rate of H2 evolution at the level of 2.5 mmol (H2) g−1 h−1. Under the visible light irradiation (λ = 427 nm), the highest activity of 0.6 mmol (H2) g−1 h−1 was achieved with the 5% CuOx/DTiO2 T700 photocatalyst. The activity of these photocatalysts is 50% higher than that of the platinized 1% Pt/DTiO2 sample. Thus, it was shown for the first time that a simple heat treatment of a commercial titanium dioxide in combination with a deposition of non-noble metal particles led to a significant increase in the activity of photocatalysts and made it possible to obtain materials that were active in hydrogen production under visible light irradiation
Cite:
Kurenkova A.Y.
, Yakovleva A.Y.
, Saraev A.A.
, Gerasimov E.Y.
, Kozlova E.A.
, Kaichev V.V.
Copper-Modified Titania-Based Photocatalysts for the Efficient Hydrogen Production under UV and Visible Light from Aqueous Solutions of Glycerol
Nanomaterials. 2022. V.12. N18. 3106 :1-16. DOI: 10.3390/nano12183106 WOS Scopus РИНЦ ANCAN PMID OpenAlex
Copper-Modified Titania-Based Photocatalysts for the Efficient Hydrogen Production under UV and Visible Light from Aqueous Solutions of Glycerol
Nanomaterials. 2022. V.12. N18. 3106 :1-16. DOI: 10.3390/nano12183106 WOS Scopus РИНЦ ANCAN PMID OpenAlex
Dates:
| Submitted: | Aug 9, 2022 |
| Accepted: | Sep 3, 2022 |
| Published print: | Sep 7, 2022 |
Identifiers:
| Web of science: | WOS:000856956800001 |
| Scopus: | 2-s2.0-85138620489 |
| Elibrary: | 50357765 |
| Chemical Abstracts: | 2022:2513648 |
| Chemical Abstracts (print): | 180:226390 |
| PMID: | 36144894 |
| OpenAlex: | W4296116186 |