Enhancement of light-matter interaction and photocatalytic efficiency of Au/TiO 2 hybrid nanowires
Metal/TiO hybrid nanostructures offer more efficient charge separation and a broader range of working wavelengths for photocatalytic reactions. The sizes and shapes of such hybrid nanostructures can affect the charge separation performance when the structures interact with light, but assessments of...
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Veröffentlicht in: | Optics express 2016-07, Vol.24 (14), p.15171 |
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creator | Lee, Jubok Lee, Seonhee Kim, Min Su Shin, Hyunjung Kim, Jeongyong |
description | Metal/TiO
hybrid nanostructures offer more efficient charge separation and a broader range of working wavelengths for photocatalytic reactions. The sizes and shapes of such hybrid nanostructures can affect the charge separation performance when the structures interact with light, but assessments of the interaction of light with these metal-TiO
nanostructures have only been carried out on ensemble averages, hindering both systematic descriptions of such hybrid structures and the design of new ones. Here, we fabricated TiO
nanotubes (NTs) with and without core Au nanowires (NWs), and used spectroscopy and calculations to assess their scattering and absorption of light at the single NW level. According to the results of spectral imaging and numerical calculations, the Au/TiO
NWs scattered and absorbed light substantially more strongly than did the plain TiO
NTs. Measurements of the degradation of the AO7 dye to assess the photocatalytic performance of the Au/TiO
NWs were consistent with optical measurements demonstrating a two-fold improvement over plain TiO
NTs under 360-nm-wavelength UV illumination. Our results suggests that nanoscale optical imaging can be used to visualize the performance of the photocatalytic reaction at the single nano-object level. |
doi_str_mv | 10.1364/OE.24.015171 |
format | Article |
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hybrid nanostructures offer more efficient charge separation and a broader range of working wavelengths for photocatalytic reactions. The sizes and shapes of such hybrid nanostructures can affect the charge separation performance when the structures interact with light, but assessments of the interaction of light with these metal-TiO
nanostructures have only been carried out on ensemble averages, hindering both systematic descriptions of such hybrid structures and the design of new ones. Here, we fabricated TiO
nanotubes (NTs) with and without core Au nanowires (NWs), and used spectroscopy and calculations to assess their scattering and absorption of light at the single NW level. According to the results of spectral imaging and numerical calculations, the Au/TiO
NWs scattered and absorbed light substantially more strongly than did the plain TiO
NTs. Measurements of the degradation of the AO7 dye to assess the photocatalytic performance of the Au/TiO
NWs were consistent with optical measurements demonstrating a two-fold improvement over plain TiO
NTs under 360-nm-wavelength UV illumination. Our results suggests that nanoscale optical imaging can be used to visualize the performance of the photocatalytic reaction at the single nano-object level.</description><identifier>ISSN: 1094-4087</identifier><identifier>EISSN: 1094-4087</identifier><identifier>DOI: 10.1364/OE.24.015171</identifier><identifier>PMID: 27410795</identifier><language>eng</language><publisher>United States</publisher><ispartof>Optics express, 2016-07, Vol.24 (14), p.15171</ispartof><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c1411-942820bc2a953038b15d5fff0616bf92a90140a918092cedd18edb08e317de873</citedby><cites>FETCH-LOGICAL-c1411-942820bc2a953038b15d5fff0616bf92a90140a918092cedd18edb08e317de873</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,864,27924,27925</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/27410795$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Lee, Jubok</creatorcontrib><creatorcontrib>Lee, Seonhee</creatorcontrib><creatorcontrib>Kim, Min Su</creatorcontrib><creatorcontrib>Shin, Hyunjung</creatorcontrib><creatorcontrib>Kim, Jeongyong</creatorcontrib><title>Enhancement of light-matter interaction and photocatalytic efficiency of Au/TiO 2 hybrid nanowires</title><title>Optics express</title><addtitle>Opt Express</addtitle><description>Metal/TiO
hybrid nanostructures offer more efficient charge separation and a broader range of working wavelengths for photocatalytic reactions. The sizes and shapes of such hybrid nanostructures can affect the charge separation performance when the structures interact with light, but assessments of the interaction of light with these metal-TiO
nanostructures have only been carried out on ensemble averages, hindering both systematic descriptions of such hybrid structures and the design of new ones. Here, we fabricated TiO
nanotubes (NTs) with and without core Au nanowires (NWs), and used spectroscopy and calculations to assess their scattering and absorption of light at the single NW level. According to the results of spectral imaging and numerical calculations, the Au/TiO
NWs scattered and absorbed light substantially more strongly than did the plain TiO
NTs. Measurements of the degradation of the AO7 dye to assess the photocatalytic performance of the Au/TiO
NWs were consistent with optical measurements demonstrating a two-fold improvement over plain TiO
NTs under 360-nm-wavelength UV illumination. Our results suggests that nanoscale optical imaging can be used to visualize the performance of the photocatalytic reaction at the single nano-object level.</description><issn>1094-4087</issn><issn>1094-4087</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><recordid>eNpNkE1Lw0AQhhdRrFZvnmV_gGl3Npvu7rGU-AGFXOo57KdZaTYl2SL596ZUxcvM8PLMMDwIPQBZQL5iy6pcULYgUACHC3QDRLKMEcEv_80zdDsMn4QA45JfoxnlDAiXxQ3SZWxUNK51MeHO4334aFLWqpRcj0OcqjIpdBGraPGh6VJnVFL7MQWDnffBBBfNeNpcH5e7UGGKm1H3weKoYvcVejfcoSuv9oO7_-lz9P5c7jav2bZ6edust5kBBpBJRgUl2lAli5zkQkNhC-89WcFKeznF0_tESRBEUuOsBeGsJsLlwK0TPJ-jp_Nd03fD0DtfH_rQqn6sgdQnVXVV1pTVZ1UT_njGD0fdOvsH_7rJvwH0OmQo</recordid><startdate>20160711</startdate><enddate>20160711</enddate><creator>Lee, Jubok</creator><creator>Lee, Seonhee</creator><creator>Kim, Min Su</creator><creator>Shin, Hyunjung</creator><creator>Kim, Jeongyong</creator><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20160711</creationdate><title>Enhancement of light-matter interaction and photocatalytic efficiency of Au/TiO 2 hybrid nanowires</title><author>Lee, Jubok ; Lee, Seonhee ; Kim, Min Su ; Shin, Hyunjung ; Kim, Jeongyong</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c1411-942820bc2a953038b15d5fff0616bf92a90140a918092cedd18edb08e317de873</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Lee, Jubok</creatorcontrib><creatorcontrib>Lee, Seonhee</creatorcontrib><creatorcontrib>Kim, Min Su</creatorcontrib><creatorcontrib>Shin, Hyunjung</creatorcontrib><creatorcontrib>Kim, Jeongyong</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><jtitle>Optics express</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Lee, Jubok</au><au>Lee, Seonhee</au><au>Kim, Min Su</au><au>Shin, Hyunjung</au><au>Kim, Jeongyong</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Enhancement of light-matter interaction and photocatalytic efficiency of Au/TiO 2 hybrid nanowires</atitle><jtitle>Optics express</jtitle><addtitle>Opt Express</addtitle><date>2016-07-11</date><risdate>2016</risdate><volume>24</volume><issue>14</issue><spage>15171</spage><pages>15171-</pages><issn>1094-4087</issn><eissn>1094-4087</eissn><abstract>Metal/TiO
hybrid nanostructures offer more efficient charge separation and a broader range of working wavelengths for photocatalytic reactions. The sizes and shapes of such hybrid nanostructures can affect the charge separation performance when the structures interact with light, but assessments of the interaction of light with these metal-TiO
nanostructures have only been carried out on ensemble averages, hindering both systematic descriptions of such hybrid structures and the design of new ones. Here, we fabricated TiO
nanotubes (NTs) with and without core Au nanowires (NWs), and used spectroscopy and calculations to assess their scattering and absorption of light at the single NW level. According to the results of spectral imaging and numerical calculations, the Au/TiO
NWs scattered and absorbed light substantially more strongly than did the plain TiO
NTs. Measurements of the degradation of the AO7 dye to assess the photocatalytic performance of the Au/TiO
NWs were consistent with optical measurements demonstrating a two-fold improvement over plain TiO
NTs under 360-nm-wavelength UV illumination. Our results suggests that nanoscale optical imaging can be used to visualize the performance of the photocatalytic reaction at the single nano-object level.</abstract><cop>United States</cop><pmid>27410795</pmid><doi>10.1364/OE.24.015171</doi><oa>free_for_read</oa></addata></record> |
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title | Enhancement of light-matter interaction and photocatalytic efficiency of Au/TiO 2 hybrid nanowires |
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