Boosting the Catalytic Performance of AuAg Alloyed Nanoparticles Grafted on MoS<sub>2</sub> Nanoflowers through NIR-Induced Light-to-Thermal Energy Conversion
MoS<sub>2</sub> nanoflowers (NFs) obtained through a hydrothermal approach were used as the substrate for the deposition of tiny spherical bimetallic AuAg or monometallic Au nanoparticles (NPs), leading to novel photothermal-assisted catalysts with different hybrid nanostructures and sho...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-03-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/13/6/1074 |
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| author | Sara Rodríguez-da-Silva Abdel Ghafour El-Hachimi José M. López-de-Luzuriaga María Rodríguez-Castillo Miguel Monge |
| author_facet | Sara Rodríguez-da-Silva Abdel Ghafour El-Hachimi José M. López-de-Luzuriaga María Rodríguez-Castillo Miguel Monge |
| author_sort | Sara Rodríguez-da-Silva |
| collection | DOAJ |
| description | MoS<sub>2</sub> nanoflowers (NFs) obtained through a hydrothermal approach were used as the substrate for the deposition of tiny spherical bimetallic AuAg or monometallic Au nanoparticles (NPs), leading to novel photothermal-assisted catalysts with different hybrid nanostructures and showing improved catalytic performance under NIR laser irradiation. The catalytic reduction of pollutant 4-nitrophenol (4-NF) to the valuable product 4-aminophenol (4-AF) was evaluated. The hydrothermal synthesis of MoS<sub>2</sub> NFs provides a material with a broad absorption in the Vis-NIR region of the electromagnetic spectrum. The in situ grafting of alloyed AuAg and Au NPs of very small size (2.0–2.5 nm) was possible through the decomposition of organometallic complexes [Au<sub>2</sub>Ag<sub>2</sub>(C<sub>6</sub>F<sub>5</sub>)<sub>4</sub>(OEt<sub>2</sub>)<sub>2</sub>]<sub>n</sub> and [Au(C<sub>6</sub>F<sub>5</sub>)(tht)] (tht = tetrahydrothiophene) using triisopropilsilane as reducing agent, leading to nanohybrids <b>1</b>–<b>4</b>. The new nanohybrid materials display photothermal properties arising from NIR light absorption of the MoS<sub>2</sub> NFs component. The AuAg-MoS<sub>2</sub> nanohybrid <b>2</b> showed excellent photothermal-assisted catalytic activity for the reduction of 4-NF, which is better than that of the monometallic Au-MoS<sub>2</sub> nanohybrid <b>4</b>. The obtained nanohybrids were characterised by transmission electron microscopy (TEM), High Angle Annular Dark Field—Scanning Transmission Electron Microscopy—Energy Dispersive X-ray Spectroscopy (HAADF-STEM-EDS), X-ray photoelectron spectroscopy and UV-Vis-NIR spectroscopy. |
| first_indexed | 2024-03-11T06:05:12Z |
| format | Article |
| id | doaj.art-84fdbe22ef6b40d4ae800e63c40dfef0 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-11T06:05:12Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-84fdbe22ef6b40d4ae800e63c40dfef02023-11-17T13:01:11ZengMDPI AGNanomaterials2079-49912023-03-01136107410.3390/nano13061074Boosting the Catalytic Performance of AuAg Alloyed Nanoparticles Grafted on MoS<sub>2</sub> Nanoflowers through NIR-Induced Light-to-Thermal Energy ConversionSara Rodríguez-da-Silva0Abdel Ghafour El-Hachimi1José M. López-de-Luzuriaga2María Rodríguez-Castillo3Miguel Monge4Department of Chemistry, Centro de Investigación en Síntesis Químicas (CISQ), University of La Rioja, C/Madre de Dios 53, E-26006 Logroño, La Rioja, SpainDepartment of Chemistry, Centro de Investigación en Síntesis Químicas (CISQ), University of La Rioja, C/Madre de Dios 53, E-26006 Logroño, La Rioja, SpainDepartment of Chemistry, Centro de Investigación en Síntesis Químicas (CISQ), University of La Rioja, C/Madre de Dios 53, E-26006 Logroño, La Rioja, SpainDepartment of Chemistry, Centro de Investigación en Síntesis Químicas (CISQ), University of La Rioja, C/Madre de Dios 53, E-26006 Logroño, La Rioja, SpainDepartment of Chemistry, Centro de Investigación en Síntesis Químicas (CISQ), University of La Rioja, C/Madre de Dios 53, E-26006 Logroño, La Rioja, SpainMoS<sub>2</sub> nanoflowers (NFs) obtained through a hydrothermal approach were used as the substrate for the deposition of tiny spherical bimetallic AuAg or monometallic Au nanoparticles (NPs), leading to novel photothermal-assisted catalysts with different hybrid nanostructures and showing improved catalytic performance under NIR laser irradiation. The catalytic reduction of pollutant 4-nitrophenol (4-NF) to the valuable product 4-aminophenol (4-AF) was evaluated. The hydrothermal synthesis of MoS<sub>2</sub> NFs provides a material with a broad absorption in the Vis-NIR region of the electromagnetic spectrum. The in situ grafting of alloyed AuAg and Au NPs of very small size (2.0–2.5 nm) was possible through the decomposition of organometallic complexes [Au<sub>2</sub>Ag<sub>2</sub>(C<sub>6</sub>F<sub>5</sub>)<sub>4</sub>(OEt<sub>2</sub>)<sub>2</sub>]<sub>n</sub> and [Au(C<sub>6</sub>F<sub>5</sub>)(tht)] (tht = tetrahydrothiophene) using triisopropilsilane as reducing agent, leading to nanohybrids <b>1</b>–<b>4</b>. The new nanohybrid materials display photothermal properties arising from NIR light absorption of the MoS<sub>2</sub> NFs component. The AuAg-MoS<sub>2</sub> nanohybrid <b>2</b> showed excellent photothermal-assisted catalytic activity for the reduction of 4-NF, which is better than that of the monometallic Au-MoS<sub>2</sub> nanohybrid <b>4</b>. The obtained nanohybrids were characterised by transmission electron microscopy (TEM), High Angle Annular Dark Field—Scanning Transmission Electron Microscopy—Energy Dispersive X-ray Spectroscopy (HAADF-STEM-EDS), X-ray photoelectron spectroscopy and UV-Vis-NIR spectroscopy.https://www.mdpi.com/2079-4991/13/6/1074goldsilvermolybdenum disulfidephotothermal effectcatalysis |
| spellingShingle | Sara Rodríguez-da-Silva Abdel Ghafour El-Hachimi José M. López-de-Luzuriaga María Rodríguez-Castillo Miguel Monge Boosting the Catalytic Performance of AuAg Alloyed Nanoparticles Grafted on MoS<sub>2</sub> Nanoflowers through NIR-Induced Light-to-Thermal Energy Conversion Nanomaterials gold silver molybdenum disulfide photothermal effect catalysis |
| title | Boosting the Catalytic Performance of AuAg Alloyed Nanoparticles Grafted on MoS<sub>2</sub> Nanoflowers through NIR-Induced Light-to-Thermal Energy Conversion |
| title_full | Boosting the Catalytic Performance of AuAg Alloyed Nanoparticles Grafted on MoS<sub>2</sub> Nanoflowers through NIR-Induced Light-to-Thermal Energy Conversion |
| title_fullStr | Boosting the Catalytic Performance of AuAg Alloyed Nanoparticles Grafted on MoS<sub>2</sub> Nanoflowers through NIR-Induced Light-to-Thermal Energy Conversion |
| title_full_unstemmed | Boosting the Catalytic Performance of AuAg Alloyed Nanoparticles Grafted on MoS<sub>2</sub> Nanoflowers through NIR-Induced Light-to-Thermal Energy Conversion |
| title_short | Boosting the Catalytic Performance of AuAg Alloyed Nanoparticles Grafted on MoS<sub>2</sub> Nanoflowers through NIR-Induced Light-to-Thermal Energy Conversion |
| title_sort | boosting the catalytic performance of auag alloyed nanoparticles grafted on mos sub 2 sub nanoflowers through nir induced light to thermal energy conversion |
| topic | gold silver molybdenum disulfide photothermal effect catalysis |
| url | https://www.mdpi.com/2079-4991/13/6/1074 |
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