Template-Assisted SnO<sub>2</sub>: Synthesis, Composition, and Photoelectrocatalytical Properties
A series of tin oxides were synthesized with polystyrene microspheres (250 nm) as the template. It was shown that an increase in the template content led to increasing specific pore volume and to the formation of bimodal pore structure with pores of 9 and 70 nm in diameter. Addition of cetyltrimethy...
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MDPI AG
2023-01-01
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| Online Access: | https://www.mdpi.com/2073-4344/13/1/168 |
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| author | Evgenii Gribov Evgeny Koshevoy Iuliia Chikunova Valentin Parmon |
| author_facet | Evgenii Gribov Evgeny Koshevoy Iuliia Chikunova Valentin Parmon |
| author_sort | Evgenii Gribov |
| collection | DOAJ |
| description | A series of tin oxides were synthesized with polystyrene microspheres (250 nm) as the template. It was shown that an increase in the template content led to increasing specific pore volume and to the formation of bimodal pore structure with pores of 9 and 70 nm in diameter. Addition of cetyltrimethylammonium bromide (CTAB) during synthesis led to the formation of friable structures (SEM data), to an increase in the average pore diameter from 19 to 111 nm, and to the formation of macropores of 80–400 nm in size. All materials had similar surface properties and cassiterite structure with 5.9–10.8 nm coherent scattering region (XRD data). Flat-band potentials of the samples were determined and their photoelectrocatalytic properties to oxidation of water and methanol were studied in the potential range of 0.4–1.6 V RHE. It was shown that the sample obtained using CTAB was characterized by lower flat-band potential value, but appeared significantly higher photocurrent in methanol oxidation, which resulted from enhanced macro-meso-porous structure to facilitate methanol pore diffusion. |
| first_indexed | 2024-03-09T13:14:02Z |
| format | Article |
| id | doaj.art-bf169f9dbfea4824ab05115db81fdf61 |
| institution | Directory Open Access Journal |
| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-03-09T13:14:02Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
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| series | Catalysts |
| spelling | doaj.art-bf169f9dbfea4824ab05115db81fdf612023-11-30T21:38:17ZengMDPI AGCatalysts2073-43442023-01-0113116810.3390/catal13010168Template-Assisted SnO<sub>2</sub>: Synthesis, Composition, and Photoelectrocatalytical PropertiesEvgenii Gribov0Evgeny Koshevoy1Iuliia Chikunova2Valentin Parmon3Boreskov Institute of Catalysis SB RAS, Pr. Ak. Lavrentieva, 5, 630090 Novosibirsk, RussiaBoreskov Institute of Catalysis SB RAS, Pr. Ak. Lavrentieva, 5, 630090 Novosibirsk, RussiaBoreskov Institute of Catalysis SB RAS, Pr. Ak. Lavrentieva, 5, 630090 Novosibirsk, RussiaBoreskov Institute of Catalysis SB RAS, Pr. Ak. Lavrentieva, 5, 630090 Novosibirsk, RussiaA series of tin oxides were synthesized with polystyrene microspheres (250 nm) as the template. It was shown that an increase in the template content led to increasing specific pore volume and to the formation of bimodal pore structure with pores of 9 and 70 nm in diameter. Addition of cetyltrimethylammonium bromide (CTAB) during synthesis led to the formation of friable structures (SEM data), to an increase in the average pore diameter from 19 to 111 nm, and to the formation of macropores of 80–400 nm in size. All materials had similar surface properties and cassiterite structure with 5.9–10.8 nm coherent scattering region (XRD data). Flat-band potentials of the samples were determined and their photoelectrocatalytic properties to oxidation of water and methanol were studied in the potential range of 0.4–1.6 V RHE. It was shown that the sample obtained using CTAB was characterized by lower flat-band potential value, but appeared significantly higher photocurrent in methanol oxidation, which resulted from enhanced macro-meso-porous structure to facilitate methanol pore diffusion.https://www.mdpi.com/2073-4344/13/1/168SnO<sub>2</sub>band-gapphotoelectrocatalysistemplate synthesisXPSRaman spectroscopy |
| spellingShingle | Evgenii Gribov Evgeny Koshevoy Iuliia Chikunova Valentin Parmon Template-Assisted SnO<sub>2</sub>: Synthesis, Composition, and Photoelectrocatalytical Properties Catalysts SnO<sub>2</sub> band-gap photoelectrocatalysis template synthesis XPS Raman spectroscopy |
| title | Template-Assisted SnO<sub>2</sub>: Synthesis, Composition, and Photoelectrocatalytical Properties |
| title_full | Template-Assisted SnO<sub>2</sub>: Synthesis, Composition, and Photoelectrocatalytical Properties |
| title_fullStr | Template-Assisted SnO<sub>2</sub>: Synthesis, Composition, and Photoelectrocatalytical Properties |
| title_full_unstemmed | Template-Assisted SnO<sub>2</sub>: Synthesis, Composition, and Photoelectrocatalytical Properties |
| title_short | Template-Assisted SnO<sub>2</sub>: Synthesis, Composition, and Photoelectrocatalytical Properties |
| title_sort | template assisted sno sub 2 sub synthesis composition and photoelectrocatalytical properties |
| topic | SnO<sub>2</sub> band-gap photoelectrocatalysis template synthesis XPS Raman spectroscopy |
| url | https://www.mdpi.com/2073-4344/13/1/168 |
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