Fractal micro- and nanodendrites of silver, copper and their compounds for photocatalytic water splitting
The results of investigation of morphology and photocatalytic properties of thin films in a form of dendrites of silver and copper, and their compounds synthesized by the reaction of substitution, are presented. The morphology and the composition of the synthesized layers were performed by scannin...
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| Format: | Article |
| Language: | English |
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Saint Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University)
2023-06-01
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| Series: | Naučno-tehničeskij Vestnik Informacionnyh Tehnologij, Mehaniki i Optiki |
| Subjects: | |
| Online Access: | https://ntv.ifmo.ru/file/article/22039.pdf |
| _version_ | 1797798417686069248 |
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| author | Alexander I. Sidorov Pavel A. Bezrukov Alexey V. Nashchekin Nikolay V. Nikonorov |
| author_facet | Alexander I. Sidorov Pavel A. Bezrukov Alexey V. Nashchekin Nikolay V. Nikonorov |
| author_sort | Alexander I. Sidorov |
| collection | DOAJ |
| description | The results of investigation of morphology and photocatalytic properties of thin films in a form of dendrites of silver
and copper, and their compounds synthesized by the reaction of substitution, are presented. The morphology and the
composition of the synthesized layers were performed by scanning electron microscope. It was shown that already
through 2–3 s after the reaction beginning metal nanoporous layers up to 1 μm thick are formed on the substrates. Silver
layers consist of micro-crystalline hexagonal plates and micro- and nano-dendrites. As the duration of the reaction
increases the layers become more compacted, and the minimum of the pores size becomes 20 nm. In the case of the
reaction with the copper salt the formation of copper microdendrites takes place immediately. The internal quantum
yield of photocatalysis of water for silver and copper layers as well as for metal-semiconductor layers is 0.4–0.45 %.
The obtained results can be used for the creation of photocathodes with large surface for photocathalytic water splitting
in order to obtain hydrogen fuel. |
| first_indexed | 2024-03-13T04:04:23Z |
| format | Article |
| id | doaj.art-8e9af7c1f69b4f94b8499579a70feced |
| institution | Directory Open Access Journal |
| issn | 2226-1494 2500-0373 |
| language | English |
| last_indexed | 2024-03-13T04:04:23Z |
| publishDate | 2023-06-01 |
| publisher | Saint Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University) |
| record_format | Article |
| series | Naučno-tehničeskij Vestnik Informacionnyh Tehnologij, Mehaniki i Optiki |
| spelling | doaj.art-8e9af7c1f69b4f94b8499579a70feced2023-06-21T10:09:59ZengSaint Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University)Naučno-tehničeskij Vestnik Informacionnyh Tehnologij, Mehaniki i Optiki2226-14942500-03732023-06-0123346547210.17586/2226-1494-2023-23-3-465-472Fractal micro- and nanodendrites of silver, copper and their compounds for photocatalytic water splittingAlexander I. Sidorov0https://orcid.org/0000-0001-8730-4389Pavel A. Bezrukov1https://orcid.org/0000-0002-5415-8749Alexey V. Nashchekin2https://orcid.org/0000-0002-2542-7364Nikolay V. Nikonorov3https://orcid.org/0000-0002-1341-067XD.Sc. (Physics & Mathematics), Associate Professor, Leading Researcher, ITMO University, Saint Petersburg, 197101, Russian Federation, sc 57193232588PhD Student, ITMO University, Saint Petersburg, 197101, Russian Federation, sc 57219516957PhD (Physics & Mathematics), Senior Researcher, Ioffe Institute, Saint Petersburg, 194021, Russian Federation, sc 6603372975D.Sc. (Physics & Mathematics), Full Professor, ITMO University, Saint Petersburg, 197101, Russian Federation, sc 7003772604The results of investigation of morphology and photocatalytic properties of thin films in a form of dendrites of silver and copper, and their compounds synthesized by the reaction of substitution, are presented. The morphology and the composition of the synthesized layers were performed by scanning electron microscope. It was shown that already through 2–3 s after the reaction beginning metal nanoporous layers up to 1 μm thick are formed on the substrates. Silver layers consist of micro-crystalline hexagonal plates and micro- and nano-dendrites. As the duration of the reaction increases the layers become more compacted, and the minimum of the pores size becomes 20 nm. In the case of the reaction with the copper salt the formation of copper microdendrites takes place immediately. The internal quantum yield of photocatalysis of water for silver and copper layers as well as for metal-semiconductor layers is 0.4–0.45 %. The obtained results can be used for the creation of photocathodes with large surface for photocathalytic water splitting in order to obtain hydrogen fuel.https://ntv.ifmo.ru/file/article/22039.pdfnanoporous layersilvercoppermorphologyphotocatalysis |
| spellingShingle | Alexander I. Sidorov Pavel A. Bezrukov Alexey V. Nashchekin Nikolay V. Nikonorov Fractal micro- and nanodendrites of silver, copper and their compounds for photocatalytic water splitting Naučno-tehničeskij Vestnik Informacionnyh Tehnologij, Mehaniki i Optiki nanoporous layer silver copper morphology photocatalysis |
| title | Fractal micro- and nanodendrites of silver, copper and their compounds for photocatalytic water splitting |
| title_full | Fractal micro- and nanodendrites of silver, copper and their compounds for photocatalytic water splitting |
| title_fullStr | Fractal micro- and nanodendrites of silver, copper and their compounds for photocatalytic water splitting |
| title_full_unstemmed | Fractal micro- and nanodendrites of silver, copper and their compounds for photocatalytic water splitting |
| title_short | Fractal micro- and nanodendrites of silver, copper and their compounds for photocatalytic water splitting |
| title_sort | fractal micro and nanodendrites of silver copper and their compounds for photocatalytic water splitting |
| topic | nanoporous layer silver copper morphology photocatalysis |
| url | https://ntv.ifmo.ru/file/article/22039.pdf |
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