Mesocrystalline TiO2 nanosheet arrays with exposed {001} facets： Synthesis via topotactic transformation and applications in dye-sensitized solar cells
A facile, fluorine-free approach for synthesizing vertically aligned arrays of mesocrystaUine anatase TiO2 nanosheets with highly exposed {001} facets was developed through topotactic transformation. Unique mesocrystalline {001}-faceted TiO2 nanosheet arrays vertically aligned on conductive fluorine...
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| Veröffentlicht in: | Nano research 2017-08, Vol.10 (8), p.2610-2625 |
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| creator | Zhang, Yanhe Cai, Jinguang Ma, Yurong Qi, Limin |
| description | A facile, fluorine-free approach for synthesizing vertically aligned arrays of mesocrystaUine anatase TiO2 nanosheets with highly exposed {001} facets was developed through topotactic transformation. Unique mesocrystalline {001}-faceted TiO2 nanosheet arrays vertically aligned on conductive fluorine-doped tin oxide glass were realized through topotactic conversion from single-crystalline precursor nanosheet arrays based on lattice matching between the precursor and the anatase crystals. The morphology and microstructure of the {001}-faceted TiO2 nanosheets could be readily modulated by changing the reactant concentration and annealing temperature. Owing to enhanced dye adsorption, reduced charge recombination, and enhanced light scattering arising from the exposed {001} facets, in addition to the advantageous features of low-dimensional structure arrays （e.g., fast electron transport and efficient charge collection）, the obtained TiO2 nanosheet arrays exhibited superior performance when they were used as anodes for dye-sensitized solar cells （DSSCs）. Particularly, {001}-faceted TiO2 nanosheet arrays -15 μm long annealed at 500 ℃ showed a power conversion efficiency of 7.51%. Furthermore, a remarkable efficiency of 8.85% was achieved for a DSSC based on doubleqayered TiO2 nanosheet arrays -35 μm long, which were prepared by conversion from the precursor nanoarrays produced via secondary hydrothermal growth. |
| doi_str_mv | 10.1007/s12274-017-1463-0 |
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Unique mesocrystalline {001}-faceted TiO2 nanosheet arrays vertically aligned on conductive fluorine-doped tin oxide glass were realized through topotactic conversion from single-crystalline precursor nanosheet arrays based on lattice matching between the precursor and the anatase crystals. The morphology and microstructure of the {001}-faceted TiO2 nanosheets could be readily modulated by changing the reactant concentration and annealing temperature. Owing to enhanced dye adsorption, reduced charge recombination, and enhanced light scattering arising from the exposed {001} facets, in addition to the advantageous features of low-dimensional structure arrays （e.g., fast electron transport and efficient charge collection）, the obtained TiO2 nanosheet arrays exhibited superior performance when they were used as anodes for dye-sensitized solar cells （DSSCs）. Particularly, {001}-faceted TiO2 nanosheet arrays -15 μm long annealed at 500 ℃ showed a power conversion efficiency of 7.51%. Furthermore, a remarkable efficiency of 8.85% was achieved for a DSSC based on doubleqayered TiO2 nanosheet arrays -35 μm long, which were prepared by conversion from the precursor nanoarrays produced via secondary hydrothermal growth.</description><identifier>ISSN: 1998-0124</identifier><identifier>EISSN: 1998-0000</identifier><identifier>DOI: 10.1007/s12274-017-1463-0</identifier><language>eng</language><publisher>Beijing: Tsinghua University Press</publisher><subject>Anatase ; Annealing ; Arrays ; Atomic/Molecular Structure and Spectra ; Biomedicine ; Biotechnology ; Charge transport ; Chemistry and Materials Science ; Condensed Matter Physics ; Crystals ; Dye-sensitized solar cells ; Dyes ; Electron transport ; Energy conversion efficiency ; Exposure ; Fluorine ; Genetic transformation ; Lattice matching ; Light scattering ; Materials Science ; Mathematical morphology ; Nanosheets ; Nanotechnology ; Photovoltaic cells ; Recombination ; Research Article ; Single crystals ; Solar cells ; Tin ; Tin oxide ; Tin oxides ; TiO2纳米 ; Titanium dioxide ; 先驱体转化法 ; 制备 ; 合成阵列 ; 应用 ; 拓扑变换 ; 染料敏化太阳能电池 ; 锐钛矿型</subject><ispartof>Nano research, 2017-08, Vol.10 (8), p.2610-2625</ispartof><rights>Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2017</rights><rights>Nano Research is a copyright of Springer, (2017). All Rights Reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c343t-bc2e1bf75177923228f487614d2c4889d0d174e56c4140b495c2ae350d43e5be3</citedby><cites>FETCH-LOGICAL-c343t-bc2e1bf75177923228f487614d2c4889d0d174e56c4140b495c2ae350d43e5be3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Uhttp://image.cqvip.com/vip1000/qk/71233X/71233X.jpg</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s12274-017-1463-0$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s12274-017-1463-0$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27901,27902,41464,42533,51294</link.rule.ids></links><search><creatorcontrib>Zhang, Yanhe</creatorcontrib><creatorcontrib>Cai, Jinguang</creatorcontrib><creatorcontrib>Ma, Yurong</creatorcontrib><creatorcontrib>Qi, Limin</creatorcontrib><title>Mesocrystalline TiO2 nanosheet arrays with exposed {001} facets： Synthesis via topotactic transformation and applications in dye-sensitized solar cells</title><title>Nano research</title><addtitle>Nano Res</addtitle><addtitle>Nano Research</addtitle><description>A facile, fluorine-free approach for synthesizing vertically aligned arrays of mesocrystaUine anatase TiO2 nanosheets with highly exposed {001} facets was developed through topotactic transformation. Unique mesocrystalline {001}-faceted TiO2 nanosheet arrays vertically aligned on conductive fluorine-doped tin oxide glass were realized through topotactic conversion from single-crystalline precursor nanosheet arrays based on lattice matching between the precursor and the anatase crystals. The morphology and microstructure of the {001}-faceted TiO2 nanosheets could be readily modulated by changing the reactant concentration and annealing temperature. Owing to enhanced dye adsorption, reduced charge recombination, and enhanced light scattering arising from the exposed {001} facets, in addition to the advantageous features of low-dimensional structure arrays （e.g., fast electron transport and efficient charge collection）, the obtained TiO2 nanosheet arrays exhibited superior performance when they were used as anodes for dye-sensitized solar cells （DSSCs）. Particularly, {001}-faceted TiO2 nanosheet arrays -15 μm long annealed at 500 ℃ showed a power conversion efficiency of 7.51%. Furthermore, a remarkable efficiency of 8.85% was achieved for a DSSC based on doubleqayered TiO2 nanosheet arrays -35 μm long, which were prepared by conversion from the precursor nanoarrays produced via secondary hydrothermal growth.</description><subject>Anatase</subject><subject>Annealing</subject><subject>Arrays</subject><subject>Atomic/Molecular Structure and Spectra</subject><subject>Biomedicine</subject><subject>Biotechnology</subject><subject>Charge transport</subject><subject>Chemistry and Materials Science</subject><subject>Condensed Matter Physics</subject><subject>Crystals</subject><subject>Dye-sensitized solar cells</subject><subject>Dyes</subject><subject>Electron transport</subject><subject>Energy conversion efficiency</subject><subject>Exposure</subject><subject>Fluorine</subject><subject>Genetic transformation</subject><subject>Lattice matching</subject><subject>Light scattering</subject><subject>Materials Science</subject><subject>Mathematical 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TiO2 nanosheet arrays with exposed {001} facets： Synthesis via topotactic transformation and applications in dye-sensitized solar cells</title><author>Zhang, Yanhe ; Cai, Jinguang ; Ma, Yurong ; Qi, Limin</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c343t-bc2e1bf75177923228f487614d2c4889d0d174e56c4140b495c2ae350d43e5be3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Anatase</topic><topic>Annealing</topic><topic>Arrays</topic><topic>Atomic/Molecular Structure and Spectra</topic><topic>Biomedicine</topic><topic>Biotechnology</topic><topic>Charge transport</topic><topic>Chemistry and Materials Science</topic><topic>Condensed Matter Physics</topic><topic>Crystals</topic><topic>Dye-sensitized solar cells</topic><topic>Dyes</topic><topic>Electron transport</topic><topic>Energy conversion efficiency</topic><topic>Exposure</topic><topic>Fluorine</topic><topic>Genetic 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Limin</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Mesocrystalline TiO2 nanosheet arrays with exposed {001} facets： Synthesis via topotactic transformation and applications in dye-sensitized solar cells</atitle><jtitle>Nano research</jtitle><stitle>Nano Res</stitle><addtitle>Nano Research</addtitle><date>2017-08-01</date><risdate>2017</risdate><volume>10</volume><issue>8</issue><spage>2610</spage><epage>2625</epage><pages>2610-2625</pages><issn>1998-0124</issn><eissn>1998-0000</eissn><abstract>A facile, fluorine-free approach for synthesizing vertically aligned arrays of mesocrystaUine anatase TiO2 nanosheets with highly exposed {001} facets was developed through topotactic transformation. Unique mesocrystalline {001}-faceted TiO2 nanosheet arrays vertically aligned on conductive fluorine-doped tin oxide glass were realized through topotactic conversion from single-crystalline precursor nanosheet arrays based on lattice matching between the precursor and the anatase crystals. The morphology and microstructure of the {001}-faceted TiO2 nanosheets could be readily modulated by changing the reactant concentration and annealing temperature. Owing to enhanced dye adsorption, reduced charge recombination, and enhanced light scattering arising from the exposed {001} facets, in addition to the advantageous features of low-dimensional structure arrays （e.g., fast electron transport and efficient charge collection）, the obtained TiO2 nanosheet arrays exhibited superior performance when they were used as anodes for dye-sensitized solar cells （DSSCs）. Particularly, {001}-faceted TiO2 nanosheet arrays -15 μm long annealed at 500 ℃ showed a power conversion efficiency of 7.51%. Furthermore, a remarkable efficiency of 8.85% was achieved for a DSSC based on doubleqayered TiO2 nanosheet arrays -35 μm long, which were prepared by conversion from the precursor nanoarrays produced via secondary hydrothermal growth.</abstract><cop>Beijing</cop><pub>Tsinghua University Press</pub><doi>10.1007/s12274-017-1463-0</doi><tpages>16</tpages></addata></record> |
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| subjects | Anatase Annealing Arrays Atomic/Molecular Structure and Spectra Biomedicine Biotechnology Charge transport Chemistry and Materials Science Condensed Matter Physics Crystals Dye-sensitized solar cells Dyes Electron transport Energy conversion efficiency Exposure Fluorine Genetic transformation Lattice matching Light scattering Materials Science Mathematical morphology Nanosheets Nanotechnology Photovoltaic cells Recombination Research Article Single crystals Solar cells Tin Tin oxide Tin oxides TiO2纳米 Titanium dioxide 先驱体转化法 制备 合成阵列 应用 拓扑变换 染料敏化太阳能电池 锐钛矿型 |
| title | Mesocrystalline TiO2 nanosheet arrays with exposed {001} facets： Synthesis via topotactic transformation and applications in dye-sensitized solar cells |
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