Electrocatalytic CO reduction on earth abundant 2D MoC and TiC MXenes
Mo 2 C and Ti 3 C 2 MXenes were investigated as earth-abundant electrocatalyts for the CO 2 reduction reaction (CO 2 RR). Mo 2 C and Ti 3 C 2 exhibited faradaic efficiencies of 90% (250 mV overpotential) and 65% (650 mV overpotential), respectively, for the reduction of CO 2 to CO in acetonitrile us...
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| Veröffentlicht in: | Chemical communications (Cambridge, England) England), 2021-02, Vol.57 (13), p.1675-1678 |
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| container_title | Chemical communications (Cambridge, England) |
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| creator | Attanayake, Nuwan H Banjade, Huta R Thenuwara, Akila C Anasori, Babak Yan, Qimin Strongin, Daniel R |
| description | Mo
2
C and Ti
3
C
2
MXenes were investigated as earth-abundant electrocatalyts for the CO
2
reduction reaction (CO
2
RR). Mo
2
C and Ti
3
C
2
exhibited faradaic efficiencies of 90% (250 mV overpotential) and 65% (650 mV overpotential), respectively, for the reduction of CO
2
to CO in acetonitrile using an ionic liquid electrolyte. The use of ionic liquid 1-ethyl-2-methylimidazolium tetrafluoroborate as an electrolyte in organic solvent suppressed the competing hydrogen evolution reaction. Density functional theory (DFT) calculations suggested that the catalytic active sites are oxygen vacancy sites on both MXene surfaces. Also, a spontaneous dissociation of adsorbed COOH species to a water molecule and adsorbed CO on Mo
2
C promote the CO
2
RR.
The electrocatalytic reduction of CO
2
to CO on the Mo
2
C and Ti
3
C
2
MXenes. DFT calculations show that surface oxygen vacancies are reaction active sites. |
| doi_str_mv | 10.1039/d0cc05822j |
| format | Article |
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2
C and Ti
3
C
2
MXenes were investigated as earth-abundant electrocatalyts for the CO
2
reduction reaction (CO
2
RR). Mo
2
C and Ti
3
C
2
exhibited faradaic efficiencies of 90% (250 mV overpotential) and 65% (650 mV overpotential), respectively, for the reduction of CO
2
to CO in acetonitrile using an ionic liquid electrolyte. The use of ionic liquid 1-ethyl-2-methylimidazolium tetrafluoroborate as an electrolyte in organic solvent suppressed the competing hydrogen evolution reaction. Density functional theory (DFT) calculations suggested that the catalytic active sites are oxygen vacancy sites on both MXene surfaces. Also, a spontaneous dissociation of adsorbed COOH species to a water molecule and adsorbed CO on Mo
2
C promote the CO
2
RR.
The electrocatalytic reduction of CO
2
to CO on the Mo
2
C and Ti
3
C
2
MXenes. DFT calculations show that surface oxygen vacancies are reaction active sites.</description><identifier>ISSN: 1359-7345</identifier><identifier>EISSN: 1364-548X</identifier><identifier>DOI: 10.1039/d0cc05822j</identifier><ispartof>Chemical communications (Cambridge, England), 2021-02, Vol.57 (13), p.1675-1678</ispartof><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids></links><search><creatorcontrib>Attanayake, Nuwan H</creatorcontrib><creatorcontrib>Banjade, Huta R</creatorcontrib><creatorcontrib>Thenuwara, Akila C</creatorcontrib><creatorcontrib>Anasori, Babak</creatorcontrib><creatorcontrib>Yan, Qimin</creatorcontrib><creatorcontrib>Strongin, Daniel R</creatorcontrib><title>Electrocatalytic CO reduction on earth abundant 2D MoC and TiC MXenes</title><title>Chemical communications (Cambridge, England)</title><description>Mo
2
C and Ti
3
C
2
MXenes were investigated as earth-abundant electrocatalyts for the CO
2
reduction reaction (CO
2
RR). Mo
2
C and Ti
3
C
2
exhibited faradaic efficiencies of 90% (250 mV overpotential) and 65% (650 mV overpotential), respectively, for the reduction of CO
2
to CO in acetonitrile using an ionic liquid electrolyte. The use of ionic liquid 1-ethyl-2-methylimidazolium tetrafluoroborate as an electrolyte in organic solvent suppressed the competing hydrogen evolution reaction. Density functional theory (DFT) calculations suggested that the catalytic active sites are oxygen vacancy sites on both MXene surfaces. Also, a spontaneous dissociation of adsorbed COOH species to a water molecule and adsorbed CO on Mo
2
C promote the CO
2
RR.
The electrocatalytic reduction of CO
2
to CO on the Mo
2
C and Ti
3
C
2
MXenes. DFT calculations show that surface oxygen vacancies are reaction active sites.</description><issn>1359-7345</issn><issn>1364-548X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><sourceid/><recordid>eNqFjr0KwjAYRYMoWH8Wd-F7gWrSNNrOteJSXDp0KzGJmFJTSdKhb28FwdHLhXPhLBehDcE7gmm6l1gIzJIoaiYoIPQQhyxOqulnszQ80pjN0cK5Bo8hLAlQnrdKeNsJ7nk7eC0gu4JVshdedwbGKm79A_itN5IbD9EJii4DbiSUOoOiUka5FZrdeevU-ssl2p7zMruE1on6ZfWT26H-faP__BufEDtr</recordid><startdate>20210217</startdate><enddate>20210217</enddate><creator>Attanayake, Nuwan H</creator><creator>Banjade, Huta R</creator><creator>Thenuwara, Akila C</creator><creator>Anasori, Babak</creator><creator>Yan, Qimin</creator><creator>Strongin, Daniel R</creator><scope/></search><sort><creationdate>20210217</creationdate><title>Electrocatalytic CO reduction on earth abundant 2D MoC and TiC MXenes</title><author>Attanayake, Nuwan H ; Banjade, Huta R ; Thenuwara, Akila C ; Anasori, Babak ; Yan, Qimin ; Strongin, Daniel R</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-rsc_primary_d0cc05822j3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><creationdate>2021</creationdate><toplevel>online_resources</toplevel><creatorcontrib>Attanayake, Nuwan H</creatorcontrib><creatorcontrib>Banjade, Huta R</creatorcontrib><creatorcontrib>Thenuwara, Akila C</creatorcontrib><creatorcontrib>Anasori, Babak</creatorcontrib><creatorcontrib>Yan, Qimin</creatorcontrib><creatorcontrib>Strongin, Daniel R</creatorcontrib><jtitle>Chemical communications (Cambridge, England)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Attanayake, Nuwan H</au><au>Banjade, Huta R</au><au>Thenuwara, Akila C</au><au>Anasori, Babak</au><au>Yan, Qimin</au><au>Strongin, Daniel R</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Electrocatalytic CO reduction on earth abundant 2D MoC and TiC MXenes</atitle><jtitle>Chemical communications (Cambridge, England)</jtitle><date>2021-02-17</date><risdate>2021</risdate><volume>57</volume><issue>13</issue><spage>1675</spage><epage>1678</epage><pages>1675-1678</pages><issn>1359-7345</issn><eissn>1364-548X</eissn><abstract>Mo
2
C and Ti
3
C
2
MXenes were investigated as earth-abundant electrocatalyts for the CO
2
reduction reaction (CO
2
RR). Mo
2
C and Ti
3
C
2
exhibited faradaic efficiencies of 90% (250 mV overpotential) and 65% (650 mV overpotential), respectively, for the reduction of CO
2
to CO in acetonitrile using an ionic liquid electrolyte. The use of ionic liquid 1-ethyl-2-methylimidazolium tetrafluoroborate as an electrolyte in organic solvent suppressed the competing hydrogen evolution reaction. Density functional theory (DFT) calculations suggested that the catalytic active sites are oxygen vacancy sites on both MXene surfaces. Also, a spontaneous dissociation of adsorbed COOH species to a water molecule and adsorbed CO on Mo
2
C promote the CO
2
RR.
The electrocatalytic reduction of CO
2
to CO on the Mo
2
C and Ti
3
C
2
MXenes. DFT calculations show that surface oxygen vacancies are reaction active sites.</abstract><doi>10.1039/d0cc05822j</doi><tpages>4</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1359-7345 |
| ispartof | Chemical communications (Cambridge, England), 2021-02, Vol.57 (13), p.1675-1678 |
| issn | 1359-7345 1364-548X |
| language | |
| recordid | cdi_rsc_primary_d0cc05822j |
| source | Royal Society Of Chemistry Journals 2008-; Alma/SFX Local Collection |
| title | Electrocatalytic CO reduction on earth abundant 2D MoC and TiC MXenes |
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