Porous g-C3N4/TiO2 foam photocatalytic filter for treating NO indoor gas
g-C3N4/TiO2 heterojunction functional foams were constructed as gas purification filters for treating NO indoor gas with a high removal rate (>65%) and high stability under visible-light (λ ≥ 400 nm) illumination. The skeletons of the 3D foams consisted of g-C3N4 and TiO2 quantum dots (QDs). Such...
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| Veröffentlicht in: | Environmental science. Nano 2021-06, Vol.8 (6), p.1571-1579 |
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| container_title | Environmental science. Nano |
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| creator | Xiong, Mingwen Tao, Ying Zhao, Zhishu Zhu, Qiong Jin, Xiaoqi Zhang, Shengqiang Chen, Ming Li, Guisheng |
| description | g-C3N4/TiO2 heterojunction functional foams were constructed as gas purification filters for treating NO indoor gas with a high removal rate (>65%) and high stability under visible-light (λ ≥ 400 nm) illumination. The skeletons of the 3D foams consisted of g-C3N4 and TiO2 quantum dots (QDs). Such 3D porous foamy filters provided a large surface area and continuous pores for trapping and oxidizing NO molecules owing to their excellent adsorption and activation capability. The embedded g-C3N4/TiO2 QD heterojunctions in the foam skeletons effectively promoted the separation of photo-generated carriers, allowing the generation of more active species (holes and ·OH) for oxidizing NO molecules. An oxidation pathway (NO → NO+ → NO2− or NO3−) was proposed based on in situ FTIR spectroscopy, which suggested the important role of NO+ for removing NO gas. This work provides an efficient and stable air-purification filter for indoor air treatment. |
| doi_str_mv | 10.1039/d1en00318f |
| format | Article |
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The skeletons of the 3D foams consisted of g-C3N4 and TiO2 quantum dots (QDs). Such 3D porous foamy filters provided a large surface area and continuous pores for trapping and oxidizing NO molecules owing to their excellent adsorption and activation capability. The embedded g-C3N4/TiO2 QD heterojunctions in the foam skeletons effectively promoted the separation of photo-generated carriers, allowing the generation of more active species (holes and ·OH) for oxidizing NO molecules. An oxidation pathway (NO → NO+ → NO2− or NO3−) was proposed based on in situ FTIR spectroscopy, which suggested the important role of NO+ for removing NO gas. This work provides an efficient and stable air-purification filter for indoor air treatment.</description><identifier>ISSN: 2051-8153</identifier><identifier>EISSN: 2051-8161</identifier><identifier>DOI: 10.1039/d1en00318f</identifier><language>eng</language><publisher>Cambridge: Royal Society of Chemistry</publisher><subject>Analytical methods ; Carbon nitride ; Filters ; Foams ; Heterojunctions ; Indoor environments ; Nitrogen dioxide ; Oxidation ; Purification ; Quantum dots ; Stability ; Titanium dioxide ; Water purification</subject><ispartof>Environmental science. 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Nano</title><description>g-C3N4/TiO2 heterojunction functional foams were constructed as gas purification filters for treating NO indoor gas with a high removal rate (>65%) and high stability under visible-light (λ ≥ 400 nm) illumination. The skeletons of the 3D foams consisted of g-C3N4 and TiO2 quantum dots (QDs). Such 3D porous foamy filters provided a large surface area and continuous pores for trapping and oxidizing NO molecules owing to their excellent adsorption and activation capability. The embedded g-C3N4/TiO2 QD heterojunctions in the foam skeletons effectively promoted the separation of photo-generated carriers, allowing the generation of more active species (holes and ·OH) for oxidizing NO molecules. An oxidation pathway (NO → NO+ → NO2− or NO3−) was proposed based on in situ FTIR spectroscopy, which suggested the important role of NO+ for removing NO gas. This work provides an efficient and stable air-purification filter for indoor air treatment.</description><subject>Analytical methods</subject><subject>Carbon nitride</subject><subject>Filters</subject><subject>Foams</subject><subject>Heterojunctions</subject><subject>Indoor environments</subject><subject>Nitrogen dioxide</subject><subject>Oxidation</subject><subject>Purification</subject><subject>Quantum dots</subject><subject>Stability</subject><subject>Titanium dioxide</subject><subject>Water purification</subject><issn>2051-8153</issn><issn>2051-8161</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNo9j0FLxDAUhIMouKx78RcEPNfNy2vS5ChFXWHZeljPS9omtUttapIe_PcWlD3NMB_MMITcA3sEhnrbgh0ZQ1Duiqw4E5ApkHB98QJvySbGM2MMgAuUxYrs3n3wc6RdVuIh3x77ilPnzRedPn3yjUlm-El9Q10_JBsWFGgK1qR-7Oihov3Y-iXqTLwjN84M0W7-dU0-Xp6P5S7bV69v5dM-mwAwZWCdto6pAmqdO6esMy3UWPMWjYRct7JR0tSYG1RWu6IRXBXoOLJWgl4urMnDX-8U_PdsYzqd_RzGZfLERQ5KCESJv-nZTRw</recordid><startdate>20210601</startdate><enddate>20210601</enddate><creator>Xiong, Mingwen</creator><creator>Tao, Ying</creator><creator>Zhao, Zhishu</creator><creator>Zhu, Qiong</creator><creator>Jin, Xiaoqi</creator><creator>Zhang, Shengqiang</creator><creator>Chen, Ming</creator><creator>Li, Guisheng</creator><general>Royal Society of Chemistry</general><scope>7QH</scope><scope>7ST</scope><scope>7UA</scope><scope>C1K</scope><scope>F1W</scope><scope>H97</scope><scope>L.G</scope><scope>SOI</scope></search><sort><creationdate>20210601</creationdate><title>Porous g-C3N4/TiO2 foam photocatalytic filter for treating NO indoor gas</title><author>Xiong, Mingwen ; Tao, Ying ; Zhao, Zhishu ; Zhu, Qiong ; Jin, Xiaoqi ; Zhang, Shengqiang ; Chen, Ming ; Li, Guisheng</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-p113t-1ef9ef0871b94ff8efad1b3b2d3a6149d6c86ab34a38e9f7c52873f230d619153</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Analytical methods</topic><topic>Carbon nitride</topic><topic>Filters</topic><topic>Foams</topic><topic>Heterojunctions</topic><topic>Indoor environments</topic><topic>Nitrogen dioxide</topic><topic>Oxidation</topic><topic>Purification</topic><topic>Quantum dots</topic><topic>Stability</topic><topic>Titanium dioxide</topic><topic>Water purification</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Xiong, Mingwen</creatorcontrib><creatorcontrib>Tao, Ying</creatorcontrib><creatorcontrib>Zhao, Zhishu</creatorcontrib><creatorcontrib>Zhu, Qiong</creatorcontrib><creatorcontrib>Jin, Xiaoqi</creatorcontrib><creatorcontrib>Zhang, Shengqiang</creatorcontrib><creatorcontrib>Chen, Ming</creatorcontrib><creatorcontrib>Li, Guisheng</creatorcontrib><collection>Aqualine</collection><collection>Environment Abstracts</collection><collection>Water Resources Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 3: Aquatic Pollution & Environmental Quality</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Environment Abstracts</collection><jtitle>Environmental science. Nano</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Xiong, Mingwen</au><au>Tao, Ying</au><au>Zhao, Zhishu</au><au>Zhu, Qiong</au><au>Jin, Xiaoqi</au><au>Zhang, Shengqiang</au><au>Chen, Ming</au><au>Li, Guisheng</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Porous g-C3N4/TiO2 foam photocatalytic filter for treating NO indoor gas</atitle><jtitle>Environmental science. Nano</jtitle><date>2021-06-01</date><risdate>2021</risdate><volume>8</volume><issue>6</issue><spage>1571</spage><epage>1579</epage><pages>1571-1579</pages><issn>2051-8153</issn><eissn>2051-8161</eissn><abstract>g-C3N4/TiO2 heterojunction functional foams were constructed as gas purification filters for treating NO indoor gas with a high removal rate (>65%) and high stability under visible-light (λ ≥ 400 nm) illumination. The skeletons of the 3D foams consisted of g-C3N4 and TiO2 quantum dots (QDs). Such 3D porous foamy filters provided a large surface area and continuous pores for trapping and oxidizing NO molecules owing to their excellent adsorption and activation capability. The embedded g-C3N4/TiO2 QD heterojunctions in the foam skeletons effectively promoted the separation of photo-generated carriers, allowing the generation of more active species (holes and ·OH) for oxidizing NO molecules. An oxidation pathway (NO → NO+ → NO2− or NO3−) was proposed based on in situ FTIR spectroscopy, which suggested the important role of NO+ for removing NO gas. This work provides an efficient and stable air-purification filter for indoor air treatment.</abstract><cop>Cambridge</cop><pub>Royal Society of Chemistry</pub><doi>10.1039/d1en00318f</doi><tpages>9</tpages></addata></record> |
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| source | Royal Society Of Chemistry Journals 2008- |
| subjects | Analytical methods Carbon nitride Filters Foams Heterojunctions Indoor environments Nitrogen dioxide Oxidation Purification Quantum dots Stability Titanium dioxide Water purification |
| title | Porous g-C3N4/TiO2 foam photocatalytic filter for treating NO indoor gas |
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