Core/Shell Ag/SnO<sub>2</sub> Nanowires for Visible Light Photocatalysis
This study presents core/shell Ag/SnO<sub>2</sub> nanowires (Ag/SnO<sub>2</sub>NWs) as a new photocatalyst for the rapid degradation of organic compounds by the light from the visible range. AgNWs after coating with a SnO<sub>2</sub> shell change optical propertie...
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MDPI AG
2021-12-01
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| author | Anna Baranowska-Korczyc Ewelina Mackiewicz Katarzyna Ranoszek-Soliwoda Jaroslaw Grobelny Grzegorz Celichowski |
| author_facet | Anna Baranowska-Korczyc Ewelina Mackiewicz Katarzyna Ranoszek-Soliwoda Jaroslaw Grobelny Grzegorz Celichowski |
| author_sort | Anna Baranowska-Korczyc |
| collection | DOAJ |
| description | This study presents core/shell Ag/SnO<sub>2</sub> nanowires (Ag/SnO<sub>2</sub>NWs) as a new photocatalyst for the rapid degradation of organic compounds by the light from the visible range. AgNWs after coating with a SnO<sub>2</sub> shell change optical properties and, due to red shift of the absorbance maxima of the longitudinal and transverse surface plasmon resonance (SPR), modes can be excited by the light from the visible light region. Rhodamine B and malachite green were respectively selected as a model organic dye and toxic one that are present in the environment to study the photodegradation process with a novel one-dimensional metal/semiconductor Ag/SnO<sub>2</sub>NWs photocatalyst. The degradation was investigated by studying time-dependent UV/Vis absorption of the dye solution, which showed a fast degradation process due to the presence of Ag/SnO<sub>2</sub>NWs photocatalyst. The rhodamine B and malachite green degraded after 90 and 40 min, respectively, under irradiation at the wavelength of 450 nm. The efficient photocatalytic process is attributed to two phenomenon surface plasmon resonance effects of AgNWs, which allowed light absorption from the visible range, and charge separations on the Ag core and SnO<sub>2</sub> shell interface of the nanowires which prevents recombination of photogenerated electron-hole pairs. The presented properties of Ag/SnO<sub>2</sub>NWs can be used for designing efficient and fast photodegradation systems to remove organic pollutants under solar light without applying any external sources of irradiation. |
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| format | Article |
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| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-03-10T01:45:02Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Catalysts |
| spelling | doaj.art-3cee272a90324fe695dfcfc2247fd36a2023-11-23T13:15:57ZengMDPI AGCatalysts2073-43442021-12-011213010.3390/catal12010030Core/Shell Ag/SnO<sub>2</sub> Nanowires for Visible Light PhotocatalysisAnna Baranowska-Korczyc0Ewelina Mackiewicz1Katarzyna Ranoszek-Soliwoda2Jaroslaw Grobelny3Grzegorz Celichowski4Department of Materials Technology and Chemistry, Faculty of Chemistry, The University of Lodz, Pomorska 163, 90-236 Lodz, PolandDepartment of Materials Technology and Chemistry, Faculty of Chemistry, The University of Lodz, Pomorska 163, 90-236 Lodz, PolandDepartment of Materials Technology and Chemistry, Faculty of Chemistry, The University of Lodz, Pomorska 163, 90-236 Lodz, PolandDepartment of Materials Technology and Chemistry, Faculty of Chemistry, The University of Lodz, Pomorska 163, 90-236 Lodz, PolandDepartment of Materials Technology and Chemistry, Faculty of Chemistry, The University of Lodz, Pomorska 163, 90-236 Lodz, PolandThis study presents core/shell Ag/SnO<sub>2</sub> nanowires (Ag/SnO<sub>2</sub>NWs) as a new photocatalyst for the rapid degradation of organic compounds by the light from the visible range. AgNWs after coating with a SnO<sub>2</sub> shell change optical properties and, due to red shift of the absorbance maxima of the longitudinal and transverse surface plasmon resonance (SPR), modes can be excited by the light from the visible light region. Rhodamine B and malachite green were respectively selected as a model organic dye and toxic one that are present in the environment to study the photodegradation process with a novel one-dimensional metal/semiconductor Ag/SnO<sub>2</sub>NWs photocatalyst. The degradation was investigated by studying time-dependent UV/Vis absorption of the dye solution, which showed a fast degradation process due to the presence of Ag/SnO<sub>2</sub>NWs photocatalyst. The rhodamine B and malachite green degraded after 90 and 40 min, respectively, under irradiation at the wavelength of 450 nm. The efficient photocatalytic process is attributed to two phenomenon surface plasmon resonance effects of AgNWs, which allowed light absorption from the visible range, and charge separations on the Ag core and SnO<sub>2</sub> shell interface of the nanowires which prevents recombination of photogenerated electron-hole pairs. The presented properties of Ag/SnO<sub>2</sub>NWs can be used for designing efficient and fast photodegradation systems to remove organic pollutants under solar light without applying any external sources of irradiation.https://www.mdpi.com/2073-4344/12/1/30AgNWsSnO<sub>2</sub>silver nanowirescore-shell nanostructuresphotocatalytic activityvisible-light photocatalysis |
| spellingShingle | Anna Baranowska-Korczyc Ewelina Mackiewicz Katarzyna Ranoszek-Soliwoda Jaroslaw Grobelny Grzegorz Celichowski Core/Shell Ag/SnO<sub>2</sub> Nanowires for Visible Light Photocatalysis Catalysts AgNWs SnO<sub>2</sub> silver nanowires core-shell nanostructures photocatalytic activity visible-light photocatalysis |
| title | Core/Shell Ag/SnO<sub>2</sub> Nanowires for Visible Light Photocatalysis |
| title_full | Core/Shell Ag/SnO<sub>2</sub> Nanowires for Visible Light Photocatalysis |
| title_fullStr | Core/Shell Ag/SnO<sub>2</sub> Nanowires for Visible Light Photocatalysis |
| title_full_unstemmed | Core/Shell Ag/SnO<sub>2</sub> Nanowires for Visible Light Photocatalysis |
| title_short | Core/Shell Ag/SnO<sub>2</sub> Nanowires for Visible Light Photocatalysis |
| title_sort | core shell ag sno sub 2 sub nanowires for visible light photocatalysis |
| topic | AgNWs SnO<sub>2</sub> silver nanowires core-shell nanostructures photocatalytic activity visible-light photocatalysis |
| url | https://www.mdpi.com/2073-4344/12/1/30 |
| work_keys_str_mv | AT annabaranowskakorczyc coreshellagsnosub2subnanowiresforvisiblelightphotocatalysis AT ewelinamackiewicz coreshellagsnosub2subnanowiresforvisiblelightphotocatalysis AT katarzynaranoszeksoliwoda coreshellagsnosub2subnanowiresforvisiblelightphotocatalysis AT jaroslawgrobelny coreshellagsnosub2subnanowiresforvisiblelightphotocatalysis AT grzegorzcelichowski coreshellagsnosub2subnanowiresforvisiblelightphotocatalysis |