Construction of Cu-Ce/graphene catalysts via a one-step hydrothermal method and their excellent CO catalytic oxidation performance
Cu-Ce/graphene catalysts show high dispersion of metal particles and excellent activity and stability for catalytic oxidation. In this study, a hydrothermal method was used to synthesize a series of bimetallic Cu-Ce/graphene catalysts, and the effects of the proportions of Cu and Ce on CO oxidation...
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| description | Cu-Ce/graphene catalysts show high dispersion of metal particles and excellent activity and stability for catalytic oxidation. In this study, a hydrothermal method was used to synthesize a series of bimetallic Cu-Ce/graphene catalysts, and the effects of the proportions of Cu and Ce on CO oxidation were investigated in detail. Indispensable characterizations such as XPS, XRD, TEM, BET, and H
-TPR were conducted to explore the effect of the Cu/Ce molar ratio and the metal valence on the activity and determine the structure-performance relationship. The results showed that bimetallic supported catalysts, such as 3Cu5Ce/graphene, 1Cu1Ce/graphene, and 5Cu3Ce/graphene, possessed significant catalytic activity. Especially, the 5Cu3Ce/graphene catalyst showed highest catalytic activity for CO oxidation, the
value was 132 °C, and the apparent activation energy was 68.03 kJ mol
. Furthermore, the stability of the 5Cu3Ce/graphene catalyst was outstanding, which could be maintained for at least 12 h. Moreover, the CeO
particles were well crystalline with the size 5-9 nm in these catalysts, and the CuO nanoparticles were well dispersed on CeO
and graphene. Notably, the ratio of Cu/Ce in the catalyst was higher, the interaction between the Ce species and the graphene was stronger, and the Cu species were more easily reduced; this was beneficial for the oxidation of CO. |
| doi_str_mv | 10.1039/c7ra11676d |
| format | Article |
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-TPR were conducted to explore the effect of the Cu/Ce molar ratio and the metal valence on the activity and determine the structure-performance relationship. The results showed that bimetallic supported catalysts, such as 3Cu5Ce/graphene, 1Cu1Ce/graphene, and 5Cu3Ce/graphene, possessed significant catalytic activity. Especially, the 5Cu3Ce/graphene catalyst showed highest catalytic activity for CO oxidation, the
value was 132 °C, and the apparent activation energy was 68.03 kJ mol
. Furthermore, the stability of the 5Cu3Ce/graphene catalyst was outstanding, which could be maintained for at least 12 h. Moreover, the CeO
particles were well crystalline with the size 5-9 nm in these catalysts, and the CuO nanoparticles were well dispersed on CeO
and graphene. Notably, the ratio of Cu/Ce in the catalyst was higher, the interaction between the Ce species and the graphene was stronger, and the Cu species were more easily reduced; this was beneficial for the oxidation of CO.</description><identifier>ISSN: 2046-2069</identifier><identifier>EISSN: 2046-2069</identifier><identifier>DOI: 10.1039/c7ra11676d</identifier><identifier>PMID: 35540887</identifier><language>eng</language><publisher>England: Royal Society of Chemistry</publisher><subject>Bimetals ; Catalysis ; Catalysts ; Catalytic activity ; Catalytic oxidation ; Cerium oxides ; Chemical synthesis ; Chemistry ; Copper ; Graphene ; Hydrothermal crystal growth ; Metal particles ; Oxidation ; Stability ; X ray photoelectron spectroscopy</subject><ispartof>RSC advances, 2018-01, Vol.8 (3), p.1583-1592</ispartof><rights>This journal is © The Royal Society of Chemistry.</rights><rights>Copyright Royal Society of Chemistry 2018</rights><rights>This journal is © The Royal Society of Chemistry 2018 The Royal Society of Chemistry</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c406t-58485510952890cd3f206644d1e8642dfb9bba867dd87e8ccd9a2bbf2a6778d63</citedby><cites>FETCH-LOGICAL-c406t-58485510952890cd3f206644d1e8642dfb9bba867dd87e8ccd9a2bbf2a6778d63</cites><orcidid>0000-0001-8478-433X ; 0000-0002-4595-193X</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/PMC9077102/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC9077102/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,314,727,780,784,864,885,27923,27924,53790,53792</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/35540887$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Zhao, Yinshuang</creatorcontrib><creatorcontrib>Dong, Fang</creatorcontrib><creatorcontrib>Han, Weiliang</creatorcontrib><creatorcontrib>Zhao, Haijun</creatorcontrib><creatorcontrib>Tang, Zhicheng</creatorcontrib><title>Construction of Cu-Ce/graphene catalysts via a one-step hydrothermal method and their excellent CO catalytic oxidation performance</title><title>RSC advances</title><addtitle>RSC Adv</addtitle><description>Cu-Ce/graphene catalysts show high dispersion of metal particles and excellent activity and stability for catalytic oxidation. In this study, a hydrothermal method was used to synthesize a series of bimetallic Cu-Ce/graphene catalysts, and the effects of the proportions of Cu and Ce on CO oxidation were investigated in detail. Indispensable characterizations such as XPS, XRD, TEM, BET, and H
-TPR were conducted to explore the effect of the Cu/Ce molar ratio and the metal valence on the activity and determine the structure-performance relationship. The results showed that bimetallic supported catalysts, such as 3Cu5Ce/graphene, 1Cu1Ce/graphene, and 5Cu3Ce/graphene, possessed significant catalytic activity. Especially, the 5Cu3Ce/graphene catalyst showed highest catalytic activity for CO oxidation, the
value was 132 °C, and the apparent activation energy was 68.03 kJ mol
. Furthermore, the stability of the 5Cu3Ce/graphene catalyst was outstanding, which could be maintained for at least 12 h. Moreover, the CeO
particles were well crystalline with the size 5-9 nm in these catalysts, and the CuO nanoparticles were well dispersed on CeO
and graphene. Notably, the ratio of Cu/Ce in the catalyst was higher, the interaction between the Ce species and the graphene was stronger, and the Cu species were more easily reduced; this was beneficial for the oxidation of CO.</description><subject>Bimetals</subject><subject>Catalysis</subject><subject>Catalysts</subject><subject>Catalytic activity</subject><subject>Catalytic oxidation</subject><subject>Cerium oxides</subject><subject>Chemical synthesis</subject><subject>Chemistry</subject><subject>Copper</subject><subject>Graphene</subject><subject>Hydrothermal crystal growth</subject><subject>Metal particles</subject><subject>Oxidation</subject><subject>Stability</subject><subject>X ray photoelectron spectroscopy</subject><issn>2046-2069</issn><issn>2046-2069</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNpdkd1r1jAYxYMobszd-AdIwBsR6pK0zceNMDq_YDAQvQ5p8nTNaJOapGPvrX-5fbfXMc1NQvLLec7hIPSakg-U1OrMimQo5YK7Z-iYkYZXjHD1_Mn5CJ3mfEO2xVvKOH2Jjuq2bYiU4hj97mLIJa22-BhwHHC3Vh2cXSezjBAAW1PMtMsl41tvsMExQJULLHjcuRTLCGk2E56hjNFhExzernzCcGdhmiAU3F0dNIq3ON55Z-4nLZCGuP0NFl6hF4OZMpwe9hP08_OnH93X6vLqy7fu_LKyDeGlamUj25YS1TKpiHX1sIXjTeMoSN4wN_Sq743kwjkpQFrrlGF9PzDDhZCO1yfo44PusvYzOLu5S2bSS_KzSTsdjdf_vgQ_6ut4qxURghK2Cbw7CKT4a4Vc9OzzPqcJENesGeesbRhXckPf_ofexDWFLZ5mhBKpqKR76v0DZVPMOcHwaIYSvW9Xd-L7-X27Fxv85qn9R_Rvl_UfB9iiHA</recordid><startdate>20180101</startdate><enddate>20180101</enddate><creator>Zhao, Yinshuang</creator><creator>Dong, Fang</creator><creator>Han, Weiliang</creator><creator>Zhao, Haijun</creator><creator>Tang, Zhicheng</creator><general>Royal Society of Chemistry</general><general>The Royal Society of Chemistry</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>7X8</scope><scope>5PM</scope><orcidid>https://orcid.org/0000-0001-8478-433X</orcidid><orcidid>https://orcid.org/0000-0002-4595-193X</orcidid></search><sort><creationdate>20180101</creationdate><title>Construction of Cu-Ce/graphene catalysts via a one-step hydrothermal method and their excellent CO catalytic oxidation performance</title><author>Zhao, Yinshuang ; Dong, Fang ; Han, Weiliang ; Zhao, Haijun ; Tang, Zhicheng</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c406t-58485510952890cd3f206644d1e8642dfb9bba867dd87e8ccd9a2bbf2a6778d63</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Bimetals</topic><topic>Catalysis</topic><topic>Catalysts</topic><topic>Catalytic activity</topic><topic>Catalytic oxidation</topic><topic>Cerium oxides</topic><topic>Chemical synthesis</topic><topic>Chemistry</topic><topic>Copper</topic><topic>Graphene</topic><topic>Hydrothermal crystal growth</topic><topic>Metal particles</topic><topic>Oxidation</topic><topic>Stability</topic><topic>X ray photoelectron spectroscopy</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zhao, Yinshuang</creatorcontrib><creatorcontrib>Dong, Fang</creatorcontrib><creatorcontrib>Han, Weiliang</creatorcontrib><creatorcontrib>Zhao, Haijun</creatorcontrib><creatorcontrib>Tang, Zhicheng</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>MEDLINE - Academic</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>RSC advances</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zhao, Yinshuang</au><au>Dong, Fang</au><au>Han, Weiliang</au><au>Zhao, Haijun</au><au>Tang, Zhicheng</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Construction of Cu-Ce/graphene catalysts via a one-step hydrothermal method and their excellent CO catalytic oxidation performance</atitle><jtitle>RSC advances</jtitle><addtitle>RSC Adv</addtitle><date>2018-01-01</date><risdate>2018</risdate><volume>8</volume><issue>3</issue><spage>1583</spage><epage>1592</epage><pages>1583-1592</pages><issn>2046-2069</issn><eissn>2046-2069</eissn><abstract>Cu-Ce/graphene catalysts show high dispersion of metal particles and excellent activity and stability for catalytic oxidation. In this study, a hydrothermal method was used to synthesize a series of bimetallic Cu-Ce/graphene catalysts, and the effects of the proportions of Cu and Ce on CO oxidation were investigated in detail. Indispensable characterizations such as XPS, XRD, TEM, BET, and H
-TPR were conducted to explore the effect of the Cu/Ce molar ratio and the metal valence on the activity and determine the structure-performance relationship. The results showed that bimetallic supported catalysts, such as 3Cu5Ce/graphene, 1Cu1Ce/graphene, and 5Cu3Ce/graphene, possessed significant catalytic activity. Especially, the 5Cu3Ce/graphene catalyst showed highest catalytic activity for CO oxidation, the
value was 132 °C, and the apparent activation energy was 68.03 kJ mol
. Furthermore, the stability of the 5Cu3Ce/graphene catalyst was outstanding, which could be maintained for at least 12 h. Moreover, the CeO
particles were well crystalline with the size 5-9 nm in these catalysts, and the CuO nanoparticles were well dispersed on CeO
and graphene. Notably, the ratio of Cu/Ce in the catalyst was higher, the interaction between the Ce species and the graphene was stronger, and the Cu species were more easily reduced; this was beneficial for the oxidation of CO.</abstract><cop>England</cop><pub>Royal Society of Chemistry</pub><pmid>35540887</pmid><doi>10.1039/c7ra11676d</doi><tpages>10</tpages><orcidid>https://orcid.org/0000-0001-8478-433X</orcidid><orcidid>https://orcid.org/0000-0002-4595-193X</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | Bimetals Catalysis Catalysts Catalytic activity Catalytic oxidation Cerium oxides Chemical synthesis Chemistry Copper Graphene Hydrothermal crystal growth Metal particles Oxidation Stability X ray photoelectron spectroscopy |
| title | Construction of Cu-Ce/graphene catalysts via a one-step hydrothermal method and their excellent CO catalytic oxidation performance |
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