Compact Integration of TiO<sub>2</sub> Nanoparticles into the Cross-Points of 3D Vertically Stacked Ag Nanowires for Plasmon-Enhanced Photocatalysis
The compact integration of semiconductor TiO<sub>2</sub> nanoparticles (NPs) into the 3D crossed region of stacked plasmonic Ag nanowires (NWs) enhanced the photocatalytic activities through synergistic effects between the strong localized surface plasmon resonance (LSPR) excitation at t...
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MDPI AG
2019-03-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/9/3/468 |
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| author | Vo Thi Nhat Linh Xiaofei Xiao Ho Sang Jung Vincenzo Giannini Stefan A. Maier Dong-Ho Kim Yong-Ill Lee Sung-Gyu Park |
| author_facet | Vo Thi Nhat Linh Xiaofei Xiao Ho Sang Jung Vincenzo Giannini Stefan A. Maier Dong-Ho Kim Yong-Ill Lee Sung-Gyu Park |
| author_sort | Vo Thi Nhat Linh |
| collection | DOAJ |
| description | The compact integration of semiconductor TiO<sub>2</sub> nanoparticles (NPs) into the 3D crossed region of stacked plasmonic Ag nanowires (NWs) enhanced the photocatalytic activities through synergistic effects between the strong localized surface plasmon resonance (LSPR) excitation at the 3D cross-points of the Ag NWs and the efficient hot electron transfer at the interface between the Ag NWs and the TiO<sub>2</sub> NPs. This paper explored new hybrid nanostructures based on the selective assembly of TiO<sub>2</sub> NPs onto 3D cross-points of vertically stacked Ag NWs. The assembled TiO<sub>2</sub> NPs directly contacted the 3D Ag NWs; therefore, charge separation occurred efficiently at the interface between the Ag NWs and the TiO<sub>2</sub> NPs. The composite nanomaterials exhibited high extinction across the ultraviolet-visible range, rendering the nanomaterials high-performance photocatalysts across the full (ultraviolet-visible) and the visible spectral regions. Theoretical simulations clearly revealed that the local plasmonic field was highly enhanced at the 3D crossed regions of the vertically stacked Ag NWs. A Raman spectroscopic analysis of probe dye molecules under photodegradation conditions clearly revealed that the nanogap in the 3D crossed region was crucial for facilitating plasmon-enhanced photocatalysis and plasmon-enhanced spectroscopy. |
| first_indexed | 2024-12-19T05:07:25Z |
| format | Article |
| id | doaj.art-f446538577d04341b40e51b537bbfbd9 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-12-19T05:07:25Z |
| publishDate | 2019-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-f446538577d04341b40e51b537bbfbd92022-12-21T20:34:54ZengMDPI AGNanomaterials2079-49912019-03-019346810.3390/nano9030468nano9030468Compact Integration of TiO<sub>2</sub> Nanoparticles into the Cross-Points of 3D Vertically Stacked Ag Nanowires for Plasmon-Enhanced PhotocatalysisVo Thi Nhat Linh0Xiaofei Xiao1Ho Sang Jung2Vincenzo Giannini3Stefan A. Maier4Dong-Ho Kim5Yong-Ill Lee6Sung-Gyu Park7Advanced Nano-Surface Department (ANSD), Korea Institute of Materials Science (KIMS), Changwon, Gyeongnam 51508, KoreaThe Blackett Laboratory, Department of Physics, Imperial College London, London SW7 2AZ, UKAdvanced Nano-Surface Department (ANSD), Korea Institute of Materials Science (KIMS), Changwon, Gyeongnam 51508, KoreaThe Blackett Laboratory, Department of Physics, Imperial College London, London SW7 2AZ, UKThe Blackett Laboratory, Department of Physics, Imperial College London, London SW7 2AZ, UKAdvanced Nano-Surface Department (ANSD), Korea Institute of Materials Science (KIMS), Changwon, Gyeongnam 51508, KoreaDepartment of Chemistry, Changwon National University, Changwon, Gyeongnam 51140, KoreaAdvanced Nano-Surface Department (ANSD), Korea Institute of Materials Science (KIMS), Changwon, Gyeongnam 51508, KoreaThe compact integration of semiconductor TiO<sub>2</sub> nanoparticles (NPs) into the 3D crossed region of stacked plasmonic Ag nanowires (NWs) enhanced the photocatalytic activities through synergistic effects between the strong localized surface plasmon resonance (LSPR) excitation at the 3D cross-points of the Ag NWs and the efficient hot electron transfer at the interface between the Ag NWs and the TiO<sub>2</sub> NPs. This paper explored new hybrid nanostructures based on the selective assembly of TiO<sub>2</sub> NPs onto 3D cross-points of vertically stacked Ag NWs. The assembled TiO<sub>2</sub> NPs directly contacted the 3D Ag NWs; therefore, charge separation occurred efficiently at the interface between the Ag NWs and the TiO<sub>2</sub> NPs. The composite nanomaterials exhibited high extinction across the ultraviolet-visible range, rendering the nanomaterials high-performance photocatalysts across the full (ultraviolet-visible) and the visible spectral regions. Theoretical simulations clearly revealed that the local plasmonic field was highly enhanced at the 3D crossed regions of the vertically stacked Ag NWs. A Raman spectroscopic analysis of probe dye molecules under photodegradation conditions clearly revealed that the nanogap in the 3D crossed region was crucial for facilitating plasmon-enhanced photocatalysis and plasmon-enhanced spectroscopy.https://www.mdpi.com/2079-4991/9/3/4683D hybrid nanostructureslocalized surface plasmon resonancehot electronsenvironmental remedyplasmon-enhanced photocatalysis |
| spellingShingle | Vo Thi Nhat Linh Xiaofei Xiao Ho Sang Jung Vincenzo Giannini Stefan A. Maier Dong-Ho Kim Yong-Ill Lee Sung-Gyu Park Compact Integration of TiO<sub>2</sub> Nanoparticles into the Cross-Points of 3D Vertically Stacked Ag Nanowires for Plasmon-Enhanced Photocatalysis Nanomaterials 3D hybrid nanostructures localized surface plasmon resonance hot electrons environmental remedy plasmon-enhanced photocatalysis |
| title | Compact Integration of TiO<sub>2</sub> Nanoparticles into the Cross-Points of 3D Vertically Stacked Ag Nanowires for Plasmon-Enhanced Photocatalysis |
| title_full | Compact Integration of TiO<sub>2</sub> Nanoparticles into the Cross-Points of 3D Vertically Stacked Ag Nanowires for Plasmon-Enhanced Photocatalysis |
| title_fullStr | Compact Integration of TiO<sub>2</sub> Nanoparticles into the Cross-Points of 3D Vertically Stacked Ag Nanowires for Plasmon-Enhanced Photocatalysis |
| title_full_unstemmed | Compact Integration of TiO<sub>2</sub> Nanoparticles into the Cross-Points of 3D Vertically Stacked Ag Nanowires for Plasmon-Enhanced Photocatalysis |
| title_short | Compact Integration of TiO<sub>2</sub> Nanoparticles into the Cross-Points of 3D Vertically Stacked Ag Nanowires for Plasmon-Enhanced Photocatalysis |
| title_sort | compact integration of tio sub 2 sub nanoparticles into the cross points of 3d vertically stacked ag nanowires for plasmon enhanced photocatalysis |
| topic | 3D hybrid nanostructures localized surface plasmon resonance hot electrons environmental remedy plasmon-enhanced photocatalysis |
| url | https://www.mdpi.com/2079-4991/9/3/468 |
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