CuO-ZnO hetero-junctions decorated graphitic carbon nitride hybrid nanocomposite: Hydrothermal synthesis and ethanol gas sensing application
ZnO and CuO have attracted considerable attention for their potential application in gas sensors. However, they also have some disadvantages, such as high operating temperature and poor sensitivity. Graphitic carbon nitride (g-C3N4) has been widely used as metal-free catalyst and catalyst support in...
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Veröffentlicht in: | Journal of alloys and compounds 2019-01, Vol.770, p.972-980 |
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description | ZnO and CuO have attracted considerable attention for their potential application in gas sensors. However, they also have some disadvantages, such as high operating temperature and poor sensitivity. Graphitic carbon nitride (g-C3N4) has been widely used as metal-free catalyst and catalyst support in gas sensing field due to its unique chemical stability and excellent substrate characteristics. In this study, a one-step hydrothermal method was developed for the preparation of a CuO-ZnO/g-C3N4 ternary composite. The as-prepared samples were characterized by using the XRD, SEM, TEM, FTIR, UV–vis and XPS techniques. The analysis results indicated that the ternary composite was synthesized successfully. The morphological analyses demonstrated that the flake-like CuO and ZnO nanoparticles were wrapped and connected by g-C3N4 nanosheet. The as-prepared CuO-ZnO/g-C3N4 exhibited obviously enhanced sensing properties to ethanol, which were 1.34 times and 2.17 times higher than that of CuO-ZnO and CuO, respectively. The improving gas sensing properties were related to the valid p-n junctions of CuO-ZnO and excellent substrate effect of g-C3N4 nanosheet.
•CuO-ZnO/g-C3N4 ternary nanocomposite was synthesized by using a facile hydrothermal method.•The nanoparticles ZnO and flake CuO distributed randomly on g-C3N4 surface with a close interface.•CuO-ZnO combined with g-C3N4 could obviously lower the optimal gas sensing test temperature to ethanol. |
doi_str_mv | 10.1016/j.jallcom.2018.08.205 |
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•CuO-ZnO/g-C3N4 ternary nanocomposite was synthesized by using a facile hydrothermal method.•The nanoparticles ZnO and flake CuO distributed randomly on g-C3N4 surface with a close interface.•CuO-ZnO combined with g-C3N4 could obviously lower the optimal gas sensing test temperature to ethanol.</description><identifier>ISSN: 0925-8388</identifier><identifier>EISSN: 1873-4669</identifier><identifier>DOI: 10.1016/j.jallcom.2018.08.205</identifier><language>eng</language><publisher>Lausanne: Elsevier B.V</publisher><subject>Carbon ; Carbon nitride ; Catalysis ; Catalysts ; CuO-ZnO ; Detection ; Ethanol ; Gas sensor ; Gas sensors ; Gases ; Hybrid nanocomposite ; Nanocomposites ; Nanoparticles ; Nanostructure ; Operating temperature ; Organic chemistry ; P-n junctions ; Sensors ; Substrates ; Ternary composite ; X ray photoelectron spectroscopy ; Zinc oxide</subject><ispartof>Journal of alloys and compounds, 2019-01, Vol.770, p.972-980</ispartof><rights>2018 Elsevier B.V.</rights><rights>Copyright Elsevier BV Jan 5, 2019</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c403t-fb9aa50d9241c9dbb9e53d5d81b2a2f736c674d1976a6ab6882af84e5117b9503</citedby><cites>FETCH-LOGICAL-c403t-fb9aa50d9241c9dbb9e53d5d81b2a2f736c674d1976a6ab6882af84e5117b9503</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.jallcom.2018.08.205$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids></links><search><creatorcontrib>Qin, Cong</creatorcontrib><creatorcontrib>Wang, Yan</creatorcontrib><creatorcontrib>Gong, Yuxiao</creatorcontrib><creatorcontrib>Zhang, Zhanying</creatorcontrib><creatorcontrib>Cao, Jianliang</creatorcontrib><title>CuO-ZnO hetero-junctions decorated graphitic carbon nitride hybrid nanocomposite: Hydrothermal synthesis and ethanol gas sensing application</title><title>Journal of alloys and compounds</title><description>ZnO and CuO have attracted considerable attention for their potential application in gas sensors. However, they also have some disadvantages, such as high operating temperature and poor sensitivity. Graphitic carbon nitride (g-C3N4) has been widely used as metal-free catalyst and catalyst support in gas sensing field due to its unique chemical stability and excellent substrate characteristics. In this study, a one-step hydrothermal method was developed for the preparation of a CuO-ZnO/g-C3N4 ternary composite. The as-prepared samples were characterized by using the XRD, SEM, TEM, FTIR, UV–vis and XPS techniques. The analysis results indicated that the ternary composite was synthesized successfully. The morphological analyses demonstrated that the flake-like CuO and ZnO nanoparticles were wrapped and connected by g-C3N4 nanosheet. The as-prepared CuO-ZnO/g-C3N4 exhibited obviously enhanced sensing properties to ethanol, which were 1.34 times and 2.17 times higher than that of CuO-ZnO and CuO, respectively. The improving gas sensing properties were related to the valid p-n junctions of CuO-ZnO and excellent substrate effect of g-C3N4 nanosheet.
•CuO-ZnO/g-C3N4 ternary nanocomposite was synthesized by using a facile hydrothermal method.•The nanoparticles ZnO and flake CuO distributed randomly on g-C3N4 surface with a close interface.•CuO-ZnO combined with g-C3N4 could obviously lower the optimal gas sensing test temperature to ethanol.</description><subject>Carbon</subject><subject>Carbon nitride</subject><subject>Catalysis</subject><subject>Catalysts</subject><subject>CuO-ZnO</subject><subject>Detection</subject><subject>Ethanol</subject><subject>Gas sensor</subject><subject>Gas sensors</subject><subject>Gases</subject><subject>Hybrid nanocomposite</subject><subject>Nanocomposites</subject><subject>Nanoparticles</subject><subject>Nanostructure</subject><subject>Operating temperature</subject><subject>Organic chemistry</subject><subject>P-n junctions</subject><subject>Sensors</subject><subject>Substrates</subject><subject>Ternary composite</subject><subject>X ray photoelectron spectroscopy</subject><subject>Zinc oxide</subject><issn>0925-8388</issn><issn>1873-4669</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNqFkMtqGzEUhkVoIW7aRygIuh5XGs1FyqYU0zSFgDfJphtxRjrj0TCWppJc8Dv0oSPj7Lv6zuK_cH5CPnO25Yx3X-ftDMtiwnFbMy63TBa2N2TDZS-qpuvUO7Jhqm4rKaS8JR9SmhljXAm-If92p3312-_phBljqOaTN9kFn6hFEyJktPQQYZ1cdoYaiEPw1LscnUU6nYdC6sGH0r6G5DLe08ezjSFPGI-w0HT25UwuUfCWYp6KdqEHSDShT84fKKzr4gxcSj-S9yMsCT-98Y68PPx43j1WT_ufv3bfnyrTMJGrcVAALbOqbrhRdhgUtsK2VvKhhnrsRWe6vrFc9R10MHRS1jDKBlvO-0G1TNyRL9fcNYY_J0xZz-EUfanUNRdcCiFkXVTtVWViSCniqNfojhDPmjN9GV7P-m14fRleM1nYFt-3qw_LC38dRp2MQ2_QuogmaxvcfxJeAZ-2kpc</recordid><startdate>20190105</startdate><enddate>20190105</enddate><creator>Qin, Cong</creator><creator>Wang, Yan</creator><creator>Gong, Yuxiao</creator><creator>Zhang, Zhanying</creator><creator>Cao, Jianliang</creator><general>Elsevier B.V</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20190105</creationdate><title>CuO-ZnO hetero-junctions decorated graphitic carbon nitride hybrid nanocomposite: Hydrothermal synthesis and ethanol gas sensing application</title><author>Qin, Cong ; Wang, Yan ; Gong, Yuxiao ; Zhang, Zhanying ; Cao, Jianliang</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c403t-fb9aa50d9241c9dbb9e53d5d81b2a2f736c674d1976a6ab6882af84e5117b9503</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Carbon</topic><topic>Carbon nitride</topic><topic>Catalysis</topic><topic>Catalysts</topic><topic>CuO-ZnO</topic><topic>Detection</topic><topic>Ethanol</topic><topic>Gas sensor</topic><topic>Gas sensors</topic><topic>Gases</topic><topic>Hybrid nanocomposite</topic><topic>Nanocomposites</topic><topic>Nanoparticles</topic><topic>Nanostructure</topic><topic>Operating temperature</topic><topic>Organic chemistry</topic><topic>P-n junctions</topic><topic>Sensors</topic><topic>Substrates</topic><topic>Ternary composite</topic><topic>X ray photoelectron spectroscopy</topic><topic>Zinc oxide</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Qin, Cong</creatorcontrib><creatorcontrib>Wang, Yan</creatorcontrib><creatorcontrib>Gong, Yuxiao</creatorcontrib><creatorcontrib>Zhang, Zhanying</creatorcontrib><creatorcontrib>Cao, Jianliang</creatorcontrib><collection>CrossRef</collection><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>Qin, Cong</au><au>Wang, Yan</au><au>Gong, Yuxiao</au><au>Zhang, Zhanying</au><au>Cao, Jianliang</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>CuO-ZnO hetero-junctions decorated graphitic carbon nitride hybrid nanocomposite: Hydrothermal synthesis and ethanol gas sensing application</atitle><jtitle>Journal of alloys and compounds</jtitle><date>2019-01-05</date><risdate>2019</risdate><volume>770</volume><spage>972</spage><epage>980</epage><pages>972-980</pages><issn>0925-8388</issn><eissn>1873-4669</eissn><abstract>ZnO and CuO have attracted considerable attention for their potential application in gas sensors. However, they also have some disadvantages, such as high operating temperature and poor sensitivity. Graphitic carbon nitride (g-C3N4) has been widely used as metal-free catalyst and catalyst support in gas sensing field due to its unique chemical stability and excellent substrate characteristics. In this study, a one-step hydrothermal method was developed for the preparation of a CuO-ZnO/g-C3N4 ternary composite. The as-prepared samples were characterized by using the XRD, SEM, TEM, FTIR, UV–vis and XPS techniques. The analysis results indicated that the ternary composite was synthesized successfully. The morphological analyses demonstrated that the flake-like CuO and ZnO nanoparticles were wrapped and connected by g-C3N4 nanosheet. The as-prepared CuO-ZnO/g-C3N4 exhibited obviously enhanced sensing properties to ethanol, which were 1.34 times and 2.17 times higher than that of CuO-ZnO and CuO, respectively. The improving gas sensing properties were related to the valid p-n junctions of CuO-ZnO and excellent substrate effect of g-C3N4 nanosheet.
•CuO-ZnO/g-C3N4 ternary nanocomposite was synthesized by using a facile hydrothermal method.•The nanoparticles ZnO and flake CuO distributed randomly on g-C3N4 surface with a close interface.•CuO-ZnO combined with g-C3N4 could obviously lower the optimal gas sensing test temperature to ethanol.</abstract><cop>Lausanne</cop><pub>Elsevier B.V</pub><doi>10.1016/j.jallcom.2018.08.205</doi><tpages>9</tpages></addata></record> |
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subjects | Carbon Carbon nitride Catalysis Catalysts CuO-ZnO Detection Ethanol Gas sensor Gas sensors Gases Hybrid nanocomposite Nanocomposites Nanoparticles Nanostructure Operating temperature Organic chemistry P-n junctions Sensors Substrates Ternary composite X ray photoelectron spectroscopy Zinc oxide |
title | CuO-ZnO hetero-junctions decorated graphitic carbon nitride hybrid nanocomposite: Hydrothermal synthesis and ethanol gas sensing application |
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