UV-Activated Au Modified TiO2/In2O3 Hollow Nanospheres for Formaldehyde Detection at Room Temperature
Au modified TiO2/In2O3 hollow nanospheres were synthesized by the hydrolysis method using the carbon nanospheres as a sacrificial template. Compared to pure In2O3, pure TiO2, and TiO2/In2O3 based sensors, the Au/TiO2/In2O3 nanosphere-based chemiresistive-type sensor exhibited excellent sensing perfo...
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| Veröffentlicht in: | Materials 2023-05, Vol.16 (11), p.4010 |
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| creator | Zhang, Su Huang, Baoyu Jiang, Zenghao Qian, Junfan Cao, Jiawei Feng, Qiuxia Zhang, Jianwei Li, Xiaogan |
| description | Au modified TiO2/In2O3 hollow nanospheres were synthesized by the hydrolysis method using the carbon nanospheres as a sacrificial template. Compared to pure In2O3, pure TiO2, and TiO2/In2O3 based sensors, the Au/TiO2/In2O3 nanosphere-based chemiresistive-type sensor exhibited excellent sensing performances to formaldehyde at room temperature under ultraviolet light (UV-LED) activation. The response of the Au/TiO2/In2O3 nanocomposite-based sensor to 1 ppm formaldehyde was about 5.6, which is higher than that of In2O3 (1.6), TiO2 (2.1), and TiO2/In2O3 (3.8). The response time and recovery time of the Au/TiO2/In2O3 nanocomposite sensor were 18 s and 42 s, respectively. The detectable formaldehyde concentration could go down as low as 60 ppb. In situ diffuse reflectance Fourier transform infrared spectroscopy (DRIFTS) was used to analyze the chemical reactions on the surface of the sensor activated by UV light. The improvement in the sensing properties of the Au/TiO2/In2O3 nanocomposites could be attributed to the nanoheterojunctions and electronic/chemical sensitization of the Au nanoparticles. |
| doi_str_mv | 10.3390/ma16114010 |
| format | Article |
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Compared to pure In2O3, pure TiO2, and TiO2/In2O3 based sensors, the Au/TiO2/In2O3 nanosphere-based chemiresistive-type sensor exhibited excellent sensing performances to formaldehyde at room temperature under ultraviolet light (UV-LED) activation. The response of the Au/TiO2/In2O3 nanocomposite-based sensor to 1 ppm formaldehyde was about 5.6, which is higher than that of In2O3 (1.6), TiO2 (2.1), and TiO2/In2O3 (3.8). The response time and recovery time of the Au/TiO2/In2O3 nanocomposite sensor were 18 s and 42 s, respectively. The detectable formaldehyde concentration could go down as low as 60 ppb. In situ diffuse reflectance Fourier transform infrared spectroscopy (DRIFTS) was used to analyze the chemical reactions on the surface of the sensor activated by UV light. The improvement in the sensing properties of the Au/TiO2/In2O3 nanocomposites could be attributed to the nanoheterojunctions and electronic/chemical sensitization of the Au nanoparticles.</description><identifier>ISSN: 1996-1944</identifier><identifier>EISSN: 1996-1944</identifier><identifier>DOI: 10.3390/ma16114010</identifier><identifier>PMID: 37297144</identifier><language>eng</language><publisher>Basel: MDPI AG</publisher><subject>Adsorption ; Carbon ; Chemical reactions ; Ethanol ; Formaldehyde ; Fourier transforms ; Gold ; Indium oxides ; Infrared analysis ; Metal oxides ; Nanocomposites ; Nanoparticles ; Nanospheres ; Recovery time ; Room temperature ; Sensors ; Temperature ; Thin films ; Titanium dioxide ; Ultraviolet radiation</subject><ispartof>Materials, 2023-05, Vol.16 (11), p.4010</ispartof><rights>2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><rights>2023 by the authors. 2023</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c384t-3918becef8f0100706ff436df73151bf6673bd0a8c9abb2a533ea8ce8b5b98d13</citedby><cites>FETCH-LOGICAL-c384t-3918becef8f0100706ff436df73151bf6673bd0a8c9abb2a533ea8ce8b5b98d13</cites><orcidid>0000-0002-3051-135X</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC10254182/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC10254182/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,314,723,776,780,881,27901,27902,53766,53768</link.rule.ids></links><search><creatorcontrib>Zhang, Su</creatorcontrib><creatorcontrib>Huang, Baoyu</creatorcontrib><creatorcontrib>Jiang, Zenghao</creatorcontrib><creatorcontrib>Qian, Junfan</creatorcontrib><creatorcontrib>Cao, Jiawei</creatorcontrib><creatorcontrib>Feng, Qiuxia</creatorcontrib><creatorcontrib>Zhang, Jianwei</creatorcontrib><creatorcontrib>Li, Xiaogan</creatorcontrib><title>UV-Activated Au Modified TiO2/In2O3 Hollow Nanospheres for Formaldehyde Detection at Room Temperature</title><title>Materials</title><description>Au modified TiO2/In2O3 hollow nanospheres were synthesized by the hydrolysis method using the carbon nanospheres as a sacrificial template. Compared to pure In2O3, pure TiO2, and TiO2/In2O3 based sensors, the Au/TiO2/In2O3 nanosphere-based chemiresistive-type sensor exhibited excellent sensing performances to formaldehyde at room temperature under ultraviolet light (UV-LED) activation. The response of the Au/TiO2/In2O3 nanocomposite-based sensor to 1 ppm formaldehyde was about 5.6, which is higher than that of In2O3 (1.6), TiO2 (2.1), and TiO2/In2O3 (3.8). The response time and recovery time of the Au/TiO2/In2O3 nanocomposite sensor were 18 s and 42 s, respectively. The detectable formaldehyde concentration could go down as low as 60 ppb. In situ diffuse reflectance Fourier transform infrared spectroscopy (DRIFTS) was used to analyze the chemical reactions on the surface of the sensor activated by UV light. The improvement in the sensing properties of the Au/TiO2/In2O3 nanocomposites could be attributed to the nanoheterojunctions and electronic/chemical sensitization of the Au nanoparticles.</description><subject>Adsorption</subject><subject>Carbon</subject><subject>Chemical reactions</subject><subject>Ethanol</subject><subject>Formaldehyde</subject><subject>Fourier transforms</subject><subject>Gold</subject><subject>Indium oxides</subject><subject>Infrared analysis</subject><subject>Metal oxides</subject><subject>Nanocomposites</subject><subject>Nanoparticles</subject><subject>Nanospheres</subject><subject>Recovery time</subject><subject>Room temperature</subject><subject>Sensors</subject><subject>Temperature</subject><subject>Thin films</subject><subject>Titanium dioxide</subject><subject>Ultraviolet radiation</subject><issn>1996-1944</issn><issn>1996-1944</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><sourceid>BENPR</sourceid><recordid>eNpdkU1LxDAQhoMoKurFXxDwIkI106QfOcmirgrqgux6DWk7cSttsybtyv57oyt-zWVmmIeXd2YIOQR2yrlkZ62GFEAwYBtkF6RMI5BCbP6qd8iB9y8sBOeQx3Kb7PAslhkIsUtw9hSNyr5e6h4rOhrova1qU4d6Wk_is9sunnB6Y5vGvtEH3Vm_mKNDT411dGxdq5sK56sK6SX2GHRsR3VPH61t6RTbBTrdDw73yZbRjceDr7xHZuOr6cVNdDe5vr0Y3UUlz0UfcQl5gSWa3IR9WMZSYwRPK5NxSKAwaZrxomI6L6UuilgnnGNoMC-SQuYV8D1yvtZdDEWLVYld73SjFq5utVspq2v1d9LVc_VslwpYnIhwnKBw_KXg7OuAvldt7UtsGt2hHbyK81ikMhXAA3r0D32xg-vCfp9U8A8sCdTJmiqd9d6h-XYDTH18UP18kL8Dq-SMBQ</recordid><startdate>20230526</startdate><enddate>20230526</enddate><creator>Zhang, Su</creator><creator>Huang, Baoyu</creator><creator>Jiang, Zenghao</creator><creator>Qian, Junfan</creator><creator>Cao, Jiawei</creator><creator>Feng, Qiuxia</creator><creator>Zhang, Jianwei</creator><creator>Li, Xiaogan</creator><general>MDPI AG</general><general>MDPI</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>JG9</scope><scope>KB.</scope><scope>PDBOC</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>7X8</scope><scope>5PM</scope><orcidid>https://orcid.org/0000-0002-3051-135X</orcidid></search><sort><creationdate>20230526</creationdate><title>UV-Activated Au Modified TiO2/In2O3 Hollow Nanospheres for Formaldehyde Detection at Room Temperature</title><author>Zhang, Su ; Huang, Baoyu ; Jiang, Zenghao ; Qian, Junfan ; Cao, Jiawei ; Feng, Qiuxia ; Zhang, Jianwei ; Li, Xiaogan</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c384t-3918becef8f0100706ff436df73151bf6673bd0a8c9abb2a533ea8ce8b5b98d13</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>Adsorption</topic><topic>Carbon</topic><topic>Chemical reactions</topic><topic>Ethanol</topic><topic>Formaldehyde</topic><topic>Fourier transforms</topic><topic>Gold</topic><topic>Indium oxides</topic><topic>Infrared analysis</topic><topic>Metal oxides</topic><topic>Nanocomposites</topic><topic>Nanoparticles</topic><topic>Nanospheres</topic><topic>Recovery time</topic><topic>Room temperature</topic><topic>Sensors</topic><topic>Temperature</topic><topic>Thin films</topic><topic>Titanium dioxide</topic><topic>Ultraviolet radiation</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zhang, Su</creatorcontrib><creatorcontrib>Huang, Baoyu</creatorcontrib><creatorcontrib>Jiang, Zenghao</creatorcontrib><creatorcontrib>Qian, Junfan</creatorcontrib><creatorcontrib>Cao, Jiawei</creatorcontrib><creatorcontrib>Feng, Qiuxia</creatorcontrib><creatorcontrib>Zhang, Jianwei</creatorcontrib><creatorcontrib>Li, Xiaogan</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Materials Science Collection</collection><collection>ProQuest Central Korea</collection><collection>SciTech Premium Collection</collection><collection>Materials Research Database</collection><collection>Materials Science Database</collection><collection>Materials Science Collection</collection><collection>Publicly Available Content Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>MEDLINE - Academic</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>Materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zhang, Su</au><au>Huang, Baoyu</au><au>Jiang, Zenghao</au><au>Qian, Junfan</au><au>Cao, Jiawei</au><au>Feng, Qiuxia</au><au>Zhang, Jianwei</au><au>Li, Xiaogan</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>UV-Activated Au Modified TiO2/In2O3 Hollow Nanospheres for Formaldehyde Detection at Room Temperature</atitle><jtitle>Materials</jtitle><date>2023-05-26</date><risdate>2023</risdate><volume>16</volume><issue>11</issue><spage>4010</spage><pages>4010-</pages><issn>1996-1944</issn><eissn>1996-1944</eissn><abstract>Au modified TiO2/In2O3 hollow nanospheres were synthesized by the hydrolysis method using the carbon nanospheres as a sacrificial template. Compared to pure In2O3, pure TiO2, and TiO2/In2O3 based sensors, the Au/TiO2/In2O3 nanosphere-based chemiresistive-type sensor exhibited excellent sensing performances to formaldehyde at room temperature under ultraviolet light (UV-LED) activation. The response of the Au/TiO2/In2O3 nanocomposite-based sensor to 1 ppm formaldehyde was about 5.6, which is higher than that of In2O3 (1.6), TiO2 (2.1), and TiO2/In2O3 (3.8). The response time and recovery time of the Au/TiO2/In2O3 nanocomposite sensor were 18 s and 42 s, respectively. The detectable formaldehyde concentration could go down as low as 60 ppb. In situ diffuse reflectance Fourier transform infrared spectroscopy (DRIFTS) was used to analyze the chemical reactions on the surface of the sensor activated by UV light. The improvement in the sensing properties of the Au/TiO2/In2O3 nanocomposites could be attributed to the nanoheterojunctions and electronic/chemical sensitization of the Au nanoparticles.</abstract><cop>Basel</cop><pub>MDPI AG</pub><pmid>37297144</pmid><doi>10.3390/ma16114010</doi><orcidid>https://orcid.org/0000-0002-3051-135X</orcidid><oa>free_for_read</oa></addata></record> |
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| source | MDPI - Multidisciplinary Digital Publishing Institute; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; PubMed Central; Free Full-Text Journals in Chemistry; PubMed Central Open Access |
| subjects | Adsorption Carbon Chemical reactions Ethanol Formaldehyde Fourier transforms Gold Indium oxides Infrared analysis Metal oxides Nanocomposites Nanoparticles Nanospheres Recovery time Room temperature Sensors Temperature Thin films Titanium dioxide Ultraviolet radiation |
| title | UV-Activated Au Modified TiO2/In2O3 Hollow Nanospheres for Formaldehyde Detection at Room Temperature |
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