An enhanced optoelectronic NO^sub 2^ gas sensors based on direct growth ZnO nanowalls in situ on porous rGO
ZnO nanowalls were grown in situ on the surface of porous reduced graphene oxide (PG) films using spray, thermal reduction and facile solution method in this work. The products were characterized by powder X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission ele...
Gespeichert in:
| Veröffentlicht in: | Journal of alloys and compounds 2018-06, Vol.749, p.244 |
|---|---|
| Hauptverfasser: | , , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | |
|---|---|
| container_issue | |
| container_start_page | 244 |
| container_title | Journal of alloys and compounds |
| container_volume | 749 |
| creator | Qi, Lijun Yu, Lingmin Liu, Zongyuan Guo, Fen Gu, Yongqiang Fan, Xinhui |
| description | ZnO nanowalls were grown in situ on the surface of porous reduced graphene oxide (PG) films using spray, thermal reduction and facile solution method in this work. The products were characterized by powder X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), Raman spectroscopy. The results showed that the highly developed interconnected 3-D ZnO nanowall networks were anchored homogeneously on the surface of PG films to construct 3D ZnO/PG hybrid nanocomposites. This 3D hybrid nanostructure provided many channels for gas diffusion. The fabricated sensor based on ZnO/PG composites showed good photo sensing response (7.4) to 365 nm UV light and an enhanced gas sensitivity (35.31) to 50 ppm NO2 with irradiation of UV light of 1.2 mW/cm2 in the air at room temperature, which was 2.24 fold higher than that of pure ZnO, and the response-recovery times were (∼37s, and 2s) when exposed to 50 ppm NO2. The optoelectronic gas sensing mechanisms of ZnO/PG composites were proposed in detail to understand the effect of UV irradiation in the NO2 detection process. |
| format | Article |
| fullrecord | <record><control><sourceid>proquest</sourceid><recordid>TN_cdi_proquest_journals_2068487616</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2068487616</sourcerecordid><originalsourceid>FETCH-proquest_journals_20684876163</originalsourceid><addsrcrecordid>eNqNyrsKwjAUgOEgCtbLOxxwLqStxnQU8TLZxcmhEmvUajmn5iT4-ir4AE7_8H8dESV6nsVTpfKuiGSezmKdad0XA-a7lDLJsyQSjwWCxZvByp6BWk-2sZV3hHUFu6LkcIK0hKthYItMjuFk-EsRzrX7ULg6evkbHLAANEgv0zQMNQLXPnxZS44Cg9sUI9G7mIbt-NehmKxX--U2bh09g2V_vFNw-FnHVCo91XOVqOw_9QYizkmy</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2068487616</pqid></control><display><type>article</type><title>An enhanced optoelectronic NO^sub 2^ gas sensors based on direct growth ZnO nanowalls in situ on porous rGO</title><source>Elsevier ScienceDirect Journals</source><creator>Qi, Lijun ; Yu, Lingmin ; Liu, Zongyuan ; Guo, Fen ; Gu, Yongqiang ; Fan, Xinhui</creator><creatorcontrib>Qi, Lijun ; Yu, Lingmin ; Liu, Zongyuan ; Guo, Fen ; Gu, Yongqiang ; Fan, Xinhui</creatorcontrib><description>ZnO nanowalls were grown in situ on the surface of porous reduced graphene oxide (PG) films using spray, thermal reduction and facile solution method in this work. The products were characterized by powder X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), Raman spectroscopy. The results showed that the highly developed interconnected 3-D ZnO nanowall networks were anchored homogeneously on the surface of PG films to construct 3D ZnO/PG hybrid nanocomposites. This 3D hybrid nanostructure provided many channels for gas diffusion. The fabricated sensor based on ZnO/PG composites showed good photo sensing response (7.4) to 365 nm UV light and an enhanced gas sensitivity (35.31) to 50 ppm NO2 with irradiation of UV light of 1.2 mW/cm2 in the air at room temperature, which was 2.24 fold higher than that of pure ZnO, and the response-recovery times were (∼37s, and 2s) when exposed to 50 ppm NO2. The optoelectronic gas sensing mechanisms of ZnO/PG composites were proposed in detail to understand the effect of UV irradiation in the NO2 detection process.</description><identifier>ISSN: 0925-8388</identifier><identifier>EISSN: 1873-4669</identifier><language>eng</language><publisher>Lausanne: Elsevier BV</publisher><subject>Field emission microscopy ; Gas detectors ; Gas sensors ; Gaseous diffusion ; Irradiation ; Nanocomposites ; Nanostructured materials ; Nitrogen dioxide ; Optoelectronics ; Scanning electron microscopy ; Sensitivity enhancement ; Thermal reduction ; Transmission electron microscopy ; Ultraviolet radiation ; X ray powder diffraction ; X-ray diffraction ; Zinc oxide ; Zinc oxides</subject><ispartof>Journal of alloys and compounds, 2018-06, Vol.749, p.244</ispartof><rights>Copyright Elsevier BV Jun 15, 2018</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780</link.rule.ids></links><search><creatorcontrib>Qi, Lijun</creatorcontrib><creatorcontrib>Yu, Lingmin</creatorcontrib><creatorcontrib>Liu, Zongyuan</creatorcontrib><creatorcontrib>Guo, Fen</creatorcontrib><creatorcontrib>Gu, Yongqiang</creatorcontrib><creatorcontrib>Fan, Xinhui</creatorcontrib><title>An enhanced optoelectronic NO^sub 2^ gas sensors based on direct growth ZnO nanowalls in situ on porous rGO</title><title>Journal of alloys and compounds</title><description>ZnO nanowalls were grown in situ on the surface of porous reduced graphene oxide (PG) films using spray, thermal reduction and facile solution method in this work. The products were characterized by powder X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), Raman spectroscopy. The results showed that the highly developed interconnected 3-D ZnO nanowall networks were anchored homogeneously on the surface of PG films to construct 3D ZnO/PG hybrid nanocomposites. This 3D hybrid nanostructure provided many channels for gas diffusion. The fabricated sensor based on ZnO/PG composites showed good photo sensing response (7.4) to 365 nm UV light and an enhanced gas sensitivity (35.31) to 50 ppm NO2 with irradiation of UV light of 1.2 mW/cm2 in the air at room temperature, which was 2.24 fold higher than that of pure ZnO, and the response-recovery times were (∼37s, and 2s) when exposed to 50 ppm NO2. The optoelectronic gas sensing mechanisms of ZnO/PG composites were proposed in detail to understand the effect of UV irradiation in the NO2 detection process.</description><subject>Field emission microscopy</subject><subject>Gas detectors</subject><subject>Gas sensors</subject><subject>Gaseous diffusion</subject><subject>Irradiation</subject><subject>Nanocomposites</subject><subject>Nanostructured materials</subject><subject>Nitrogen dioxide</subject><subject>Optoelectronics</subject><subject>Scanning electron microscopy</subject><subject>Sensitivity enhancement</subject><subject>Thermal reduction</subject><subject>Transmission electron microscopy</subject><subject>Ultraviolet radiation</subject><subject>X ray powder diffraction</subject><subject>X-ray diffraction</subject><subject>Zinc oxide</subject><subject>Zinc oxides</subject><issn>0925-8388</issn><issn>1873-4669</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNqNyrsKwjAUgOEgCtbLOxxwLqStxnQU8TLZxcmhEmvUajmn5iT4-ir4AE7_8H8dESV6nsVTpfKuiGSezmKdad0XA-a7lDLJsyQSjwWCxZvByp6BWk-2sZV3hHUFu6LkcIK0hKthYItMjuFk-EsRzrX7ULg6evkbHLAANEgv0zQMNQLXPnxZS44Cg9sUI9G7mIbt-NehmKxX--U2bh09g2V_vFNw-FnHVCo91XOVqOw_9QYizkmy</recordid><startdate>20180615</startdate><enddate>20180615</enddate><creator>Qi, Lijun</creator><creator>Yu, Lingmin</creator><creator>Liu, Zongyuan</creator><creator>Guo, Fen</creator><creator>Gu, Yongqiang</creator><creator>Fan, Xinhui</creator><general>Elsevier BV</general><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20180615</creationdate><title>An enhanced optoelectronic NO^sub 2^ gas sensors based on direct growth ZnO nanowalls in situ on porous rGO</title><author>Qi, Lijun ; Yu, Lingmin ; Liu, Zongyuan ; Guo, Fen ; Gu, Yongqiang ; Fan, Xinhui</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-proquest_journals_20684876163</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Field emission microscopy</topic><topic>Gas detectors</topic><topic>Gas sensors</topic><topic>Gaseous diffusion</topic><topic>Irradiation</topic><topic>Nanocomposites</topic><topic>Nanostructured materials</topic><topic>Nitrogen dioxide</topic><topic>Optoelectronics</topic><topic>Scanning electron microscopy</topic><topic>Sensitivity enhancement</topic><topic>Thermal reduction</topic><topic>Transmission electron microscopy</topic><topic>Ultraviolet radiation</topic><topic>X ray powder diffraction</topic><topic>X-ray diffraction</topic><topic>Zinc oxide</topic><topic>Zinc oxides</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Qi, Lijun</creatorcontrib><creatorcontrib>Yu, Lingmin</creatorcontrib><creatorcontrib>Liu, Zongyuan</creatorcontrib><creatorcontrib>Guo, Fen</creatorcontrib><creatorcontrib>Gu, Yongqiang</creatorcontrib><creatorcontrib>Fan, Xinhui</creatorcontrib><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Journal of alloys and compounds</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Qi, Lijun</au><au>Yu, Lingmin</au><au>Liu, Zongyuan</au><au>Guo, Fen</au><au>Gu, Yongqiang</au><au>Fan, Xinhui</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>An enhanced optoelectronic NO^sub 2^ gas sensors based on direct growth ZnO nanowalls in situ on porous rGO</atitle><jtitle>Journal of alloys and compounds</jtitle><date>2018-06-15</date><risdate>2018</risdate><volume>749</volume><spage>244</spage><pages>244-</pages><issn>0925-8388</issn><eissn>1873-4669</eissn><abstract>ZnO nanowalls were grown in situ on the surface of porous reduced graphene oxide (PG) films using spray, thermal reduction and facile solution method in this work. The products were characterized by powder X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), Raman spectroscopy. The results showed that the highly developed interconnected 3-D ZnO nanowall networks were anchored homogeneously on the surface of PG films to construct 3D ZnO/PG hybrid nanocomposites. This 3D hybrid nanostructure provided many channels for gas diffusion. The fabricated sensor based on ZnO/PG composites showed good photo sensing response (7.4) to 365 nm UV light and an enhanced gas sensitivity (35.31) to 50 ppm NO2 with irradiation of UV light of 1.2 mW/cm2 in the air at room temperature, which was 2.24 fold higher than that of pure ZnO, and the response-recovery times were (∼37s, and 2s) when exposed to 50 ppm NO2. The optoelectronic gas sensing mechanisms of ZnO/PG composites were proposed in detail to understand the effect of UV irradiation in the NO2 detection process.</abstract><cop>Lausanne</cop><pub>Elsevier BV</pub></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0925-8388 |
| ispartof | Journal of alloys and compounds, 2018-06, Vol.749, p.244 |
| issn | 0925-8388 1873-4669 |
| language | eng |
| recordid | cdi_proquest_journals_2068487616 |
| source | Elsevier ScienceDirect Journals |
| subjects | Field emission microscopy Gas detectors Gas sensors Gaseous diffusion Irradiation Nanocomposites Nanostructured materials Nitrogen dioxide Optoelectronics Scanning electron microscopy Sensitivity enhancement Thermal reduction Transmission electron microscopy Ultraviolet radiation X ray powder diffraction X-ray diffraction Zinc oxide Zinc oxides |
| title | An enhanced optoelectronic NO^sub 2^ gas sensors based on direct growth ZnO nanowalls in situ on porous rGO |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-15T23%3A04%3A04IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=An%20enhanced%20optoelectronic%20NO%5Esub%202%5E%20gas%20sensors%20based%20on%20direct%20growth%20ZnO%20nanowalls%20in%20situ%20on%20porous%20rGO&rft.jtitle=Journal%20of%20alloys%20and%20compounds&rft.au=Qi,%20Lijun&rft.date=2018-06-15&rft.volume=749&rft.spage=244&rft.pages=244-&rft.issn=0925-8388&rft.eissn=1873-4669&rft_id=info:doi/&rft_dat=%3Cproquest%3E2068487616%3C/proquest%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=2068487616&rft_id=info:pmid/&rfr_iscdi=true |