Tuning spontaneous polarization to alter water oxidation/reduction activities of LiNbO3
Here, we investigated the effects of spontaneous polarization on photoreactivities by using a ferroelectric material n-type congruent LiNbO3 single crystal as a model. It was found that c+ LiNbO3 was superior to c− LiNbO3 in photocatalytic water reduction, while c− LiNbO3 exhibited better performanc...
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| Veröffentlicht in: | Applied physics letters 2018-02, Vol.112 (7) |
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| container_title | Applied physics letters |
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| creator | Fu, Hongwei Song, Yan Wu, Yangqing Huang, Huiting Fan, Guozheng Xu, Jun Li, Zhaosheng Zou, Zhigang |
| description | Here, we investigated the effects of spontaneous polarization on photoreactivities by using a ferroelectric material n-type congruent LiNbO3 single crystal as a model. It was found that c+ LiNbO3 was superior to c− LiNbO3 in photocatalytic water reduction, while c− LiNbO3 exhibited better performances for photoelectrochemical water oxidation than c+ LiNbO3. Using Kelvin probe force microscopy and open circuit potential methods, we observed that c− LiNbO3 generated a higher photovoltage and had a slower charge-recombination rate than c+ LiNbO3. The results of electrochemical impedance spectroscopy measurements indicated that c− LiNbO3 may favor the hole transport from the bulk to the surface compared with c+ LiNbO3, leading to the anisotropic performances of c+ and c− LiNbO3 in water oxidation/reduction. Therefore, tuning the direction of the polarization may be a strategy to dramatically prompt the photoreactivities of water oxidation or reduction. |
| doi_str_mv | 10.1063/1.5021377 |
| format | Article |
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It was found that c+ LiNbO3 was superior to c− LiNbO3 in photocatalytic water reduction, while c− LiNbO3 exhibited better performances for photoelectrochemical water oxidation than c+ LiNbO3. Using Kelvin probe force microscopy and open circuit potential methods, we observed that c− LiNbO3 generated a higher photovoltage and had a slower charge-recombination rate than c+ LiNbO3. The results of electrochemical impedance spectroscopy measurements indicated that c− LiNbO3 may favor the hole transport from the bulk to the surface compared with c+ LiNbO3, leading to the anisotropic performances of c+ and c− LiNbO3 in water oxidation/reduction. Therefore, tuning the direction of the polarization may be a strategy to dramatically prompt the photoreactivities of water oxidation or reduction.</description><identifier>ISSN: 0003-6951</identifier><identifier>EISSN: 1077-3118</identifier><identifier>DOI: 10.1063/1.5021377</identifier><identifier>CODEN: APPLAB</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Applied physics ; Electrochemical impedance spectroscopy ; Ferroelectric materials ; Ferroelectricity ; Lithium niobates ; Open circuit voltage ; Oxidation ; Polarization ; Reduction ; Single crystals ; Tuning</subject><ispartof>Applied physics letters, 2018-02, Vol.112 (7)</ispartof><rights>Author(s)</rights><rights>2018 Author(s). Published by AIP Publishing.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c327t-fa91696564813aa1e4d0f69955bc09047f10afd6ad2ed738271daf0c992065063</citedby><cites>FETCH-LOGICAL-c327t-fa91696564813aa1e4d0f69955bc09047f10afd6ad2ed738271daf0c992065063</cites><orcidid>0000-0001-7906-6122 ; 0000-0001-8114-0432</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://pubs.aip.org/apl/article-lookup/doi/10.1063/1.5021377$$EHTML$$P50$$Gscitation$$H</linktohtml><link.rule.ids>315,781,785,795,4513,27929,27930,76389</link.rule.ids></links><search><creatorcontrib>Fu, Hongwei</creatorcontrib><creatorcontrib>Song, Yan</creatorcontrib><creatorcontrib>Wu, Yangqing</creatorcontrib><creatorcontrib>Huang, Huiting</creatorcontrib><creatorcontrib>Fan, Guozheng</creatorcontrib><creatorcontrib>Xu, Jun</creatorcontrib><creatorcontrib>Li, Zhaosheng</creatorcontrib><creatorcontrib>Zou, Zhigang</creatorcontrib><title>Tuning spontaneous polarization to alter water oxidation/reduction activities of LiNbO3</title><title>Applied physics letters</title><description>Here, we investigated the effects of spontaneous polarization on photoreactivities by using a ferroelectric material n-type congruent LiNbO3 single crystal as a model. It was found that c+ LiNbO3 was superior to c− LiNbO3 in photocatalytic water reduction, while c− LiNbO3 exhibited better performances for photoelectrochemical water oxidation than c+ LiNbO3. Using Kelvin probe force microscopy and open circuit potential methods, we observed that c− LiNbO3 generated a higher photovoltage and had a slower charge-recombination rate than c+ LiNbO3. The results of electrochemical impedance spectroscopy measurements indicated that c− LiNbO3 may favor the hole transport from the bulk to the surface compared with c+ LiNbO3, leading to the anisotropic performances of c+ and c− LiNbO3 in water oxidation/reduction. Therefore, tuning the direction of the polarization may be a strategy to dramatically prompt the photoreactivities of water oxidation or reduction.</description><subject>Applied physics</subject><subject>Electrochemical impedance spectroscopy</subject><subject>Ferroelectric materials</subject><subject>Ferroelectricity</subject><subject>Lithium niobates</subject><subject>Open circuit voltage</subject><subject>Oxidation</subject><subject>Polarization</subject><subject>Reduction</subject><subject>Single crystals</subject><subject>Tuning</subject><issn>0003-6951</issn><issn>1077-3118</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNqdkEtLAzEUhYMoWKsL_8GAK4Vpc5NJ0iyl-IJiNxWXIZ0kklInY5Kpj1_v9AHu3dzD5XzcyzkIXQIeAeZ0DCOGCVAhjtAAsBAlBZgcowHGmJZcMjhFZymt-pURSgfoddE1vnkrUhuarBsbulS0Ya2j_9HZh6bIodDrbGPxqbczfHmzM8bRmq7eIbqXjc_epiK4Yuafl3N6jk6cXid7cdAherm_W0wfy9n84Wl6OytrSkQunZbAJWe8mgDVGmxlsONSMrasscSVcIC1M1wbYo2gEyLAaIdrKQnmrA88RFf7u20MH51NWa1CF5v-pSIAbIIlJVVPXe-pOoaUonWqjf5dx28FWG17U6AOvfXszZ5Ntc-7qP-DNyH-gao1jv4CvFB7kA</recordid><startdate>20180212</startdate><enddate>20180212</enddate><creator>Fu, Hongwei</creator><creator>Song, Yan</creator><creator>Wu, Yangqing</creator><creator>Huang, Huiting</creator><creator>Fan, Guozheng</creator><creator>Xu, Jun</creator><creator>Li, Zhaosheng</creator><creator>Zou, Zhigang</creator><general>American Institute of Physics</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0001-7906-6122</orcidid><orcidid>https://orcid.org/0000-0001-8114-0432</orcidid></search><sort><creationdate>20180212</creationdate><title>Tuning spontaneous polarization to alter water oxidation/reduction activities of LiNbO3</title><author>Fu, Hongwei ; Song, Yan ; Wu, Yangqing ; Huang, Huiting ; Fan, Guozheng ; Xu, Jun ; Li, Zhaosheng ; Zou, Zhigang</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c327t-fa91696564813aa1e4d0f69955bc09047f10afd6ad2ed738271daf0c992065063</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Applied physics</topic><topic>Electrochemical impedance spectroscopy</topic><topic>Ferroelectric materials</topic><topic>Ferroelectricity</topic><topic>Lithium niobates</topic><topic>Open circuit voltage</topic><topic>Oxidation</topic><topic>Polarization</topic><topic>Reduction</topic><topic>Single crystals</topic><topic>Tuning</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Fu, Hongwei</creatorcontrib><creatorcontrib>Song, Yan</creatorcontrib><creatorcontrib>Wu, Yangqing</creatorcontrib><creatorcontrib>Huang, Huiting</creatorcontrib><creatorcontrib>Fan, Guozheng</creatorcontrib><creatorcontrib>Xu, Jun</creatorcontrib><creatorcontrib>Li, Zhaosheng</creatorcontrib><creatorcontrib>Zou, Zhigang</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Applied physics letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Fu, Hongwei</au><au>Song, Yan</au><au>Wu, Yangqing</au><au>Huang, Huiting</au><au>Fan, Guozheng</au><au>Xu, Jun</au><au>Li, Zhaosheng</au><au>Zou, Zhigang</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Tuning spontaneous polarization to alter water oxidation/reduction activities of LiNbO3</atitle><jtitle>Applied physics letters</jtitle><date>2018-02-12</date><risdate>2018</risdate><volume>112</volume><issue>7</issue><issn>0003-6951</issn><eissn>1077-3118</eissn><coden>APPLAB</coden><abstract>Here, we investigated the effects of spontaneous polarization on photoreactivities by using a ferroelectric material n-type congruent LiNbO3 single crystal as a model. It was found that c+ LiNbO3 was superior to c− LiNbO3 in photocatalytic water reduction, while c− LiNbO3 exhibited better performances for photoelectrochemical water oxidation than c+ LiNbO3. Using Kelvin probe force microscopy and open circuit potential methods, we observed that c− LiNbO3 generated a higher photovoltage and had a slower charge-recombination rate than c+ LiNbO3. The results of electrochemical impedance spectroscopy measurements indicated that c− LiNbO3 may favor the hole transport from the bulk to the surface compared with c+ LiNbO3, leading to the anisotropic performances of c+ and c− LiNbO3 in water oxidation/reduction. Therefore, tuning the direction of the polarization may be a strategy to dramatically prompt the photoreactivities of water oxidation or reduction.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/1.5021377</doi><tpages>4</tpages><orcidid>https://orcid.org/0000-0001-7906-6122</orcidid><orcidid>https://orcid.org/0000-0001-8114-0432</orcidid></addata></record> |
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| ispartof | Applied physics letters, 2018-02, Vol.112 (7) |
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| language | eng |
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| source | AIP Journals Complete; Alma/SFX Local Collection |
| subjects | Applied physics Electrochemical impedance spectroscopy Ferroelectric materials Ferroelectricity Lithium niobates Open circuit voltage Oxidation Polarization Reduction Single crystals Tuning |
| title | Tuning spontaneous polarization to alter water oxidation/reduction activities of LiNbO3 |
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