Role of titanium dioxide (TiO2) structural design/morphology in photocatalytic air purification
[Display omitted] •Seven different TiO2 photocatalyst morphologies were synthesized via hydrothermal method.•Photocatalysts were thoroughly characterized and morphological evolutions were proposed.•TiO2 nanosheets and hollow spheres exhibited the highest performance for air purification.•Nanosheets...
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| Veröffentlicht in: | Applied catalysis. B, Environmental Environmental, 2020-07, Vol.269, p.118735, Article 118735 |
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| container_title | Applied catalysis. B, Environmental |
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| creator | Mamaghani, Alireza Haghighat Haghighat, Fariborz Lee, Chang-Seo |
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•Seven different TiO2 photocatalyst morphologies were synthesized via hydrothermal method.•Photocatalysts were thoroughly characterized and morphological evolutions were proposed.•TiO2 nanosheets and hollow spheres exhibited the highest performance for air purification.•Nanosheets high percentage of [001] facet and co-presence of [001] and [101] facets led to high activity.
Seven TiO2 morphologies were synthesized and evaluated for photocatalytic oxidation (PCO) of methyl ethyl ketone (MEK) in air. Photocatalysts were fabricated via hydrothermal method and the preparation parameters were adjusted to keep the variations in photocatalysts’ crystallinity, crystal composition, and surface area in narrow ranges, thus, allowing a better understanding of the morphology-performance relationship. Based on the characterization results and data available in literature, possible morphological evolutions for different structures were put forward. MEK removal efficiency improved in the order of solid spheres |
| doi_str_mv | 10.1016/j.apcatb.2020.118735 |
| format | Article |
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•Seven different TiO2 photocatalyst morphologies were synthesized via hydrothermal method.•Photocatalysts were thoroughly characterized and morphological evolutions were proposed.•TiO2 nanosheets and hollow spheres exhibited the highest performance for air purification.•Nanosheets high percentage of [001] facet and co-presence of [001] and [101] facets led to high activity.
Seven TiO2 morphologies were synthesized and evaluated for photocatalytic oxidation (PCO) of methyl ethyl ketone (MEK) in air. Photocatalysts were fabricated via hydrothermal method and the preparation parameters were adjusted to keep the variations in photocatalysts’ crystallinity, crystal composition, and surface area in narrow ranges, thus, allowing a better understanding of the morphology-performance relationship. Based on the characterization results and data available in literature, possible morphological evolutions for different structures were put forward. MEK removal efficiency improved in the order of solid spheres < mesoporous spheres < nanotubes <3-D hierarchically porous <3-D sea urchin-like < hollow spheres < nanosheets. TiO2 nanosheets were distinctly superior to other morphologies and offered 71.3 % removal efficiency, roughly two times higher than commercial P25. Titania nanosheets excellent performance was attributed to high percentage of exposed [001] facets, synergistic effect of [001] and [101] facets, large number of terminal Ti-OH species, and surface fluorination.]]></description><identifier>ISSN: 0926-3373</identifier><identifier>EISSN: 1873-3883</identifier><identifier>DOI: 10.1016/j.apcatb.2020.118735</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Air purification ; Fluorination ; Hollow sphere ; Hydrothermal crystal growth ; Hydrothermal/solvothermal ; Methyl ethyl ketone ; Morphology ; Nanosheet ; Nanostructure ; Nanotechnology ; Nanotubes ; Oxidation ; Photocatalysis ; Photocatalyst ; Photocatalysts ; Photooxidation ; Structural design ; Structural engineering ; Synergistic effect ; Titanium ; Titanium dioxide</subject><ispartof>Applied catalysis. B, Environmental, 2020-07, Vol.269, p.118735, Article 118735</ispartof><rights>2020 Elsevier B.V.</rights><rights>Copyright Elsevier BV Jul 15, 2020</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c400t-593192df1218b5e0c50e74d8f5ff5e15f5b2b6539261d02ad2235ddfac2c37c03</citedby><cites>FETCH-LOGICAL-c400t-593192df1218b5e0c50e74d8f5ff5e15f5b2b6539261d02ad2235ddfac2c37c03</cites><orcidid>0000-0002-9531-5544 ; 0000-0003-2869-7308</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0926337320301508$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65534</link.rule.ids></links><search><creatorcontrib>Mamaghani, Alireza Haghighat</creatorcontrib><creatorcontrib>Haghighat, Fariborz</creatorcontrib><creatorcontrib>Lee, Chang-Seo</creatorcontrib><title>Role of titanium dioxide (TiO2) structural design/morphology in photocatalytic air purification</title><title>Applied catalysis. B, Environmental</title><description><![CDATA[[Display omitted]
•Seven different TiO2 photocatalyst morphologies were synthesized via hydrothermal method.•Photocatalysts were thoroughly characterized and morphological evolutions were proposed.•TiO2 nanosheets and hollow spheres exhibited the highest performance for air purification.•Nanosheets high percentage of [001] facet and co-presence of [001] and [101] facets led to high activity.
Seven TiO2 morphologies were synthesized and evaluated for photocatalytic oxidation (PCO) of methyl ethyl ketone (MEK) in air. Photocatalysts were fabricated via hydrothermal method and the preparation parameters were adjusted to keep the variations in photocatalysts’ crystallinity, crystal composition, and surface area in narrow ranges, thus, allowing a better understanding of the morphology-performance relationship. Based on the characterization results and data available in literature, possible morphological evolutions for different structures were put forward. MEK removal efficiency improved in the order of solid spheres < mesoporous spheres < nanotubes <3-D hierarchically porous <3-D sea urchin-like < hollow spheres < nanosheets. TiO2 nanosheets were distinctly superior to other morphologies and offered 71.3 % removal efficiency, roughly two times higher than commercial P25. Titania nanosheets excellent performance was attributed to high percentage of exposed [001] facets, synergistic effect of [001] and [101] facets, large number of terminal Ti-OH species, and surface fluorination.]]></description><subject>Air purification</subject><subject>Fluorination</subject><subject>Hollow sphere</subject><subject>Hydrothermal crystal growth</subject><subject>Hydrothermal/solvothermal</subject><subject>Methyl ethyl ketone</subject><subject>Morphology</subject><subject>Nanosheet</subject><subject>Nanostructure</subject><subject>Nanotechnology</subject><subject>Nanotubes</subject><subject>Oxidation</subject><subject>Photocatalysis</subject><subject>Photocatalyst</subject><subject>Photocatalysts</subject><subject>Photooxidation</subject><subject>Structural design</subject><subject>Structural engineering</subject><subject>Synergistic effect</subject><subject>Titanium</subject><subject>Titanium dioxide</subject><issn>0926-3373</issn><issn>1873-3883</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNp9UMtKAzEUDaJgrf6Bi4AbXUybR9OZ2QgivqBQkLoOaR71DtPJmGTE_r0p49rVuVzOg3MQuqZkRgldzpuZ6rVK2xkjLL9oVXJxgiZHLHhV8VM0ITVbFpyX_BxdxNgQQhhn1QTJd99a7B1OkFQHwx4b8D9gLL7dwJrd4ZjCoNMQVIuNjbDr5nsf-k_f-t0BQ4fzmXwOV-0hgcYKAu6HAA7yD3x3ic6caqO9-sMp-nh-2jy-Fqv1y9vjw6rQC0JSIWpOa2YcZbTaCku0ILZcmMoJ54Slwokt2y4Fzy2oIUwZxrgwxinNNC814VN0M_r2wX8NNibZ-CF0OVKyBa9KxnldZtZiZOngYwzWyT7AXoWDpEQep5SNHKeUxynlOGWW3Y8ymxt8gw0yarCdtgaC1UkaD_8b_AKmNn8T</recordid><startdate>20200715</startdate><enddate>20200715</enddate><creator>Mamaghani, Alireza Haghighat</creator><creator>Haghighat, Fariborz</creator><creator>Lee, Chang-Seo</creator><general>Elsevier B.V</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7ST</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>JG9</scope><scope>KR7</scope><scope>L7M</scope><scope>SOI</scope><orcidid>https://orcid.org/0000-0002-9531-5544</orcidid><orcidid>https://orcid.org/0000-0003-2869-7308</orcidid></search><sort><creationdate>20200715</creationdate><title>Role of titanium dioxide (TiO2) structural design/morphology in photocatalytic air purification</title><author>Mamaghani, Alireza Haghighat ; Haghighat, Fariborz ; Lee, Chang-Seo</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c400t-593192df1218b5e0c50e74d8f5ff5e15f5b2b6539261d02ad2235ddfac2c37c03</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Air purification</topic><topic>Fluorination</topic><topic>Hollow sphere</topic><topic>Hydrothermal crystal growth</topic><topic>Hydrothermal/solvothermal</topic><topic>Methyl ethyl ketone</topic><topic>Morphology</topic><topic>Nanosheet</topic><topic>Nanostructure</topic><topic>Nanotechnology</topic><topic>Nanotubes</topic><topic>Oxidation</topic><topic>Photocatalysis</topic><topic>Photocatalyst</topic><topic>Photocatalysts</topic><topic>Photooxidation</topic><topic>Structural design</topic><topic>Structural engineering</topic><topic>Synergistic effect</topic><topic>Titanium</topic><topic>Titanium dioxide</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Mamaghani, Alireza Haghighat</creatorcontrib><creatorcontrib>Haghighat, Fariborz</creatorcontrib><creatorcontrib>Lee, Chang-Seo</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Environment Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Materials Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Environment Abstracts</collection><jtitle>Applied catalysis. B, Environmental</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Mamaghani, Alireza Haghighat</au><au>Haghighat, Fariborz</au><au>Lee, Chang-Seo</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Role of titanium dioxide (TiO2) structural design/morphology in photocatalytic air purification</atitle><jtitle>Applied catalysis. B, Environmental</jtitle><date>2020-07-15</date><risdate>2020</risdate><volume>269</volume><spage>118735</spage><pages>118735-</pages><artnum>118735</artnum><issn>0926-3373</issn><eissn>1873-3883</eissn><abstract><![CDATA[[Display omitted]
•Seven different TiO2 photocatalyst morphologies were synthesized via hydrothermal method.•Photocatalysts were thoroughly characterized and morphological evolutions were proposed.•TiO2 nanosheets and hollow spheres exhibited the highest performance for air purification.•Nanosheets high percentage of [001] facet and co-presence of [001] and [101] facets led to high activity.
Seven TiO2 morphologies were synthesized and evaluated for photocatalytic oxidation (PCO) of methyl ethyl ketone (MEK) in air. Photocatalysts were fabricated via hydrothermal method and the preparation parameters were adjusted to keep the variations in photocatalysts’ crystallinity, crystal composition, and surface area in narrow ranges, thus, allowing a better understanding of the morphology-performance relationship. Based on the characterization results and data available in literature, possible morphological evolutions for different structures were put forward. MEK removal efficiency improved in the order of solid spheres < mesoporous spheres < nanotubes <3-D hierarchically porous <3-D sea urchin-like < hollow spheres < nanosheets. TiO2 nanosheets were distinctly superior to other morphologies and offered 71.3 % removal efficiency, roughly two times higher than commercial P25. Titania nanosheets excellent performance was attributed to high percentage of exposed [001] facets, synergistic effect of [001] and [101] facets, large number of terminal Ti-OH species, and surface fluorination.]]></abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/j.apcatb.2020.118735</doi><orcidid>https://orcid.org/0000-0002-9531-5544</orcidid><orcidid>https://orcid.org/0000-0003-2869-7308</orcidid></addata></record> |
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| subjects | Air purification Fluorination Hollow sphere Hydrothermal crystal growth Hydrothermal/solvothermal Methyl ethyl ketone Morphology Nanosheet Nanostructure Nanotechnology Nanotubes Oxidation Photocatalysis Photocatalyst Photocatalysts Photooxidation Structural design Structural engineering Synergistic effect Titanium Titanium dioxide |
| title | Role of titanium dioxide (TiO2) structural design/morphology in photocatalytic air purification |
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