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Photocatalytic Properties Dependent on the Interfacial Defects of Intergrains within TiO2 Mesocrystals
The regulation of interfacial defects of nanocrystals aligned orderly in a superstructured photocatalyst is an effective approach to improve the photocatalytic performance. However, the synthesis of ordered self‐assemblies with abundant interfacial defects and reactive sites is hard to achieve, and...
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| Published in: | Chemistry : a European journal 2018-11, Vol.24 (64), p.17105-17116 |
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| Main Authors: | , , , , , , |
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| Language: | English |
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| container_end_page | 17116 |
| container_issue | 64 |
| container_start_page | 17105 |
| container_title | Chemistry : a European journal |
| container_volume | 24 |
| creator | Wang, Hui Chen, Qifeng Luan, Qingrui Duan, Ran Guan, Ruifang Cao, Xingzhong Hu, Xun |
| description | The regulation of interfacial defects of nanocrystals aligned orderly in a superstructured photocatalyst is an effective approach to improve the photocatalytic performance. However, the synthesis of ordered self‐assemblies with abundant interfacial defects and reactive sites is hard to achieve, and applications are limited due to the unclear physicochemical properties, which result from the unique mesocrystalline microstructures. It is reported herein that the photocatalytic properties depend on the interfacial defects of intergrains in anatase TiO2 mesocrystals (TMCs). Research reveals that the photocatalytic activity largely depends on defects, such as lattice distortion and oxygen vacancies, which are located at highly aligned interfaces of intergrains within TMCs. Moreover, the mesocrystalline TiO2 photocatalysts exhibit higher photocatalytic performance in organic degradation and hydrogen evolution, compared with single crystals and polycrystals; this can be ascribed to an appropriate amount of interfacial defects at the intergrains and improved carrier separation efficiency through the highly oriented interfaces. In addition, the photocatalytic performance of the TMCs could be further improved through regulation of defects by undergoing an annealing process under a redox atmosphere. This work can provide an avenue to defect engineering for improved photocatalytic performance.
Pushing boundaries: The improved photocatalytic performance of TiO2 mesocrystals (TMCs) can be attributed to the appropriate distribution of defects at the interface of intergrains within mesocrystals and the unique microstructure of TMCs (see figure). |
| doi_str_mv | 10.1002/chem.201803516 |
| format | article |
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Pushing boundaries: The improved photocatalytic performance of TiO2 mesocrystals (TMCs) can be attributed to the appropriate distribution of defects at the interface of intergrains within mesocrystals and the unique microstructure of TMCs (see figure).</description><identifier>ISSN: 0947-6539</identifier><identifier>EISSN: 1521-3765</identifier><identifier>DOI: 10.1002/chem.201803516</identifier><language>eng</language><publisher>Weinheim: Wiley Subscription Services, Inc</publisher><subject>Anatase ; Catalytic activity ; Chemistry ; Crystal defects ; Crystals ; Defect annealing ; Defects ; Hydrogen evolution ; Interfaces ; Lattice vacancies ; mesophases ; nanoparticles ; Performance degradation ; Photocatalysis ; Photocatalysts ; photochemistry ; Photodegradation ; Physicochemical properties ; Polycrystals ; Properties (attributes) ; Single crystals ; titanium ; Titanium dioxide</subject><ispartof>Chemistry : a European journal, 2018-11, Vol.24 (64), p.17105-17116</ispartof><rights>2018 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><orcidid>0000-0001-5567-0050</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fchem.201803516$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fchem.201803516$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>315,786,790,27957,27958,50923,51032</link.rule.ids></links><search><creatorcontrib>Wang, Hui</creatorcontrib><creatorcontrib>Chen, Qifeng</creatorcontrib><creatorcontrib>Luan, Qingrui</creatorcontrib><creatorcontrib>Duan, Ran</creatorcontrib><creatorcontrib>Guan, Ruifang</creatorcontrib><creatorcontrib>Cao, Xingzhong</creatorcontrib><creatorcontrib>Hu, Xun</creatorcontrib><title>Photocatalytic Properties Dependent on the Interfacial Defects of Intergrains within TiO2 Mesocrystals</title><title>Chemistry : a European journal</title><description>The regulation of interfacial defects of nanocrystals aligned orderly in a superstructured photocatalyst is an effective approach to improve the photocatalytic performance. However, the synthesis of ordered self‐assemblies with abundant interfacial defects and reactive sites is hard to achieve, and applications are limited due to the unclear physicochemical properties, which result from the unique mesocrystalline microstructures. It is reported herein that the photocatalytic properties depend on the interfacial defects of intergrains in anatase TiO2 mesocrystals (TMCs). Research reveals that the photocatalytic activity largely depends on defects, such as lattice distortion and oxygen vacancies, which are located at highly aligned interfaces of intergrains within TMCs. Moreover, the mesocrystalline TiO2 photocatalysts exhibit higher photocatalytic performance in organic degradation and hydrogen evolution, compared with single crystals and polycrystals; this can be ascribed to an appropriate amount of interfacial defects at the intergrains and improved carrier separation efficiency through the highly oriented interfaces. In addition, the photocatalytic performance of the TMCs could be further improved through regulation of defects by undergoing an annealing process under a redox atmosphere. This work can provide an avenue to defect engineering for improved photocatalytic performance.
Pushing boundaries: The improved photocatalytic performance of TiO2 mesocrystals (TMCs) can be attributed to the appropriate distribution of defects at the interface of intergrains within mesocrystals and the unique microstructure of TMCs (see figure).</description><subject>Anatase</subject><subject>Catalytic activity</subject><subject>Chemistry</subject><subject>Crystal defects</subject><subject>Crystals</subject><subject>Defect annealing</subject><subject>Defects</subject><subject>Hydrogen evolution</subject><subject>Interfaces</subject><subject>Lattice vacancies</subject><subject>mesophases</subject><subject>nanoparticles</subject><subject>Performance degradation</subject><subject>Photocatalysis</subject><subject>Photocatalysts</subject><subject>photochemistry</subject><subject>Photodegradation</subject><subject>Physicochemical properties</subject><subject>Polycrystals</subject><subject>Properties (attributes)</subject><subject>Single crystals</subject><subject>titanium</subject><subject>Titanium dioxide</subject><issn>0947-6539</issn><issn>1521-3765</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNpdkD1rwzAQhkVpoWnatbOgSxen-rBkayzpRwIJyZDORpHPtYJjuZJC8L-vQ0qGTg939_ByvAg9UjKhhLAXU8N-wgjNCRdUXqERFYwmPJPiGo2ISrNECq5u0V0IO0KIkpyPULWuXXRGR9300Rq89q4DHy0E_AYdtCW0EbsWxxrwvI3gK22sboZjBSYG7Krz-ttr2wZ8tLG2Ld7YFcNLCM74PgzR4R7dVAPg4Y9j9PXxvpnOksXqcz59XSQ7zplMwGR5KXIDmmnO0q3RVBjC2ACQpYatYltNVK4ySCuZAitZRjiFTDIhRWX4GD2fczvvfg4QYrG3wUDT6BbcIRSMEsapymU6qE__1J07-Hb4brC4kKkinAyWOltH20BfdN7ute8LSopT58Wp8-LSeTGdvS8vE_8Fo554jg</recordid><startdate>20181116</startdate><enddate>20181116</enddate><creator>Wang, Hui</creator><creator>Chen, Qifeng</creator><creator>Luan, Qingrui</creator><creator>Duan, Ran</creator><creator>Guan, Ruifang</creator><creator>Cao, Xingzhong</creator><creator>Hu, Xun</creator><general>Wiley Subscription Services, Inc</general><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>K9.</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0001-5567-0050</orcidid></search><sort><creationdate>20181116</creationdate><title>Photocatalytic Properties Dependent on the Interfacial Defects of Intergrains within TiO2 Mesocrystals</title><author>Wang, Hui ; Chen, Qifeng ; Luan, Qingrui ; Duan, Ran ; Guan, Ruifang ; Cao, Xingzhong ; Hu, Xun</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-j3326-ec78d58cea2a324bca15c022a15e6daeb92ba09897e4f64e2d27031e762565fc3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Anatase</topic><topic>Catalytic activity</topic><topic>Chemistry</topic><topic>Crystal defects</topic><topic>Crystals</topic><topic>Defect annealing</topic><topic>Defects</topic><topic>Hydrogen evolution</topic><topic>Interfaces</topic><topic>Lattice vacancies</topic><topic>mesophases</topic><topic>nanoparticles</topic><topic>Performance degradation</topic><topic>Photocatalysis</topic><topic>Photocatalysts</topic><topic>photochemistry</topic><topic>Photodegradation</topic><topic>Physicochemical properties</topic><topic>Polycrystals</topic><topic>Properties (attributes)</topic><topic>Single crystals</topic><topic>titanium</topic><topic>Titanium dioxide</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wang, Hui</creatorcontrib><creatorcontrib>Chen, Qifeng</creatorcontrib><creatorcontrib>Luan, Qingrui</creatorcontrib><creatorcontrib>Duan, Ran</creatorcontrib><creatorcontrib>Guan, Ruifang</creatorcontrib><creatorcontrib>Cao, Xingzhong</creatorcontrib><creatorcontrib>Hu, Xun</creatorcontrib><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>MEDLINE - Academic</collection><jtitle>Chemistry : a European journal</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wang, Hui</au><au>Chen, Qifeng</au><au>Luan, Qingrui</au><au>Duan, Ran</au><au>Guan, Ruifang</au><au>Cao, Xingzhong</au><au>Hu, Xun</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Photocatalytic Properties Dependent on the Interfacial Defects of Intergrains within TiO2 Mesocrystals</atitle><jtitle>Chemistry : a European journal</jtitle><date>2018-11-16</date><risdate>2018</risdate><volume>24</volume><issue>64</issue><spage>17105</spage><epage>17116</epage><pages>17105-17116</pages><issn>0947-6539</issn><eissn>1521-3765</eissn><notes>ObjectType-Article-1</notes><notes>SourceType-Scholarly Journals-1</notes><notes>ObjectType-Feature-2</notes><notes>content type line 23</notes><abstract>The regulation of interfacial defects of nanocrystals aligned orderly in a superstructured photocatalyst is an effective approach to improve the photocatalytic performance. However, the synthesis of ordered self‐assemblies with abundant interfacial defects and reactive sites is hard to achieve, and applications are limited due to the unclear physicochemical properties, which result from the unique mesocrystalline microstructures. It is reported herein that the photocatalytic properties depend on the interfacial defects of intergrains in anatase TiO2 mesocrystals (TMCs). Research reveals that the photocatalytic activity largely depends on defects, such as lattice distortion and oxygen vacancies, which are located at highly aligned interfaces of intergrains within TMCs. Moreover, the mesocrystalline TiO2 photocatalysts exhibit higher photocatalytic performance in organic degradation and hydrogen evolution, compared with single crystals and polycrystals; this can be ascribed to an appropriate amount of interfacial defects at the intergrains and improved carrier separation efficiency through the highly oriented interfaces. In addition, the photocatalytic performance of the TMCs could be further improved through regulation of defects by undergoing an annealing process under a redox atmosphere. This work can provide an avenue to defect engineering for improved photocatalytic performance.
Pushing boundaries: The improved photocatalytic performance of TiO2 mesocrystals (TMCs) can be attributed to the appropriate distribution of defects at the interface of intergrains within mesocrystals and the unique microstructure of TMCs (see figure).</abstract><cop>Weinheim</cop><pub>Wiley Subscription Services, Inc</pub><doi>10.1002/chem.201803516</doi><tpages>12</tpages><orcidid>https://orcid.org/0000-0001-5567-0050</orcidid></addata></record> |
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| subjects | Anatase Catalytic activity Chemistry Crystal defects Crystals Defect annealing Defects Hydrogen evolution Interfaces Lattice vacancies mesophases nanoparticles Performance degradation Photocatalysis Photocatalysts photochemistry Photodegradation Physicochemical properties Polycrystals Properties (attributes) Single crystals titanium Titanium dioxide |
| title | Photocatalytic Properties Dependent on the Interfacial Defects of Intergrains within TiO2 Mesocrystals |
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