Broadening the Action Spectrum of TiO2-Based Photocatalysts to Visible Region by Substituting Platinum with Copper Full article
| Journal |
Nanomaterials
, E-ISSN: 2079-4991 |
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| Output data | Year: 2022, Volume: 12, Number: 9, Article number : 1584, Pages count : 15 DOI: 10.3390/nano12091584 | ||
| Tags | CH4 production; CO2 reduction; copper oxides; photocatalysis; platinum; TiO2; ultraviolet light; visible light | ||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Russian Science Foundation | 21-73-10235 |
Abstract:
In this study, TiO2-based photocatalysts modified with Pt and Cu/CuOx were synthesized and studied in the photocatalytic reduction of CO2. The morphology and chemical states of synthesized photocatalysts were studied using UV-Vis diffuse reflectance spectroscopy, high-resolution transmission electron microscopy, and X-ray photoelectron spectroscopy. A series of light-emitting diodes (LEDs) with maximum intensity in the range of 365-450 nm was used to determine the action spectrum of photocatalysts. It is shown for, the first time, that the pre-calcination of TiO2 at 700 degrees C and the use of Cu/CuOx instead of Pt allow one to design a highly efficient photocatalyst for CO2 transformation shifting the working range to the visible light (425 nm). Cu/CuOx/TiO2 (calcined at 700 degrees C) shows a rate of CH4 formation of 1.2 +/- 0.1 mu mol h(-1) g(-1) and an overall CO2 reduction rate of 11 +/- 1 mu mol h(-1) g(-1) (at 425 nm).
Cite:
Saraev A.A.
, Kurenkova A.Y.
, Gerasimov E.Y.
, Kozlova E.A.
Broadening the Action Spectrum of TiO2-Based Photocatalysts to Visible Region by Substituting Platinum with Copper
Nanomaterials. 2022. V.12. N9. 1584 :1-15. DOI: 10.3390/nano12091584 WOS Scopus РИНЦ AN PMID OpenAlex
Broadening the Action Spectrum of TiO2-Based Photocatalysts to Visible Region by Substituting Platinum with Copper
Nanomaterials. 2022. V.12. N9. 1584 :1-15. DOI: 10.3390/nano12091584 WOS Scopus РИНЦ AN PMID OpenAlex
Dates:
| Submitted: | Apr 16, 2022 |
| Accepted: | May 5, 2022 |
| Published print: | May 7, 2022 |
| Published online: | May 7, 2022 |
Identifiers:
| Web of science: | WOS:000795220600001 |
| Scopus: | 2-s2.0-85129402800 |
| Elibrary: | 48581961 |
| Chemical Abstracts: | 2022:1326625 |
| PMID: | 35564293 |
| OpenAlex: | W4229375861 |