Core-shell CoFe2O4@Co-Fe-Bi nanoarray: a surface-amorphization water oxidation catalyst operating at near-neutral pHElectronic supplementary information (ESI) available: Experimental section and supplementary figures. See DOI: 10.1039/c7nr02929b
The exploration of high-performance and earth-abundant water oxidation catalysts operating under mild conditions is highly attractive and challenging. In this communication, core-shell CoFe 2 O 4 @Co-Fe-Bi nanoarray on carbon cloth (CoFe 2 O 4 @Co-Fe-Bi/CC) was successfully fabricated by in situ sur...
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| creator | Ji, Xuqiang Hao, Shuai Qu, Fengli Liu, Jingquan Du, Gu Asiri, Abdullah M Chen, Liang Sun, Xuping |
| description | The exploration of high-performance and earth-abundant water oxidation catalysts operating under mild conditions is highly attractive and challenging. In this communication, core-shell CoFe
2
O
4
@Co-Fe-Bi nanoarray on carbon cloth (CoFe
2
O
4
@Co-Fe-Bi/CC) was successfully fabricated by
in situ
surface amorphization of CoFe
2
O
4
nanoarray on CC (CoFe
2
O
4
/CC). As a 3D water oxidation electrode, CoFe
2
O
4
@Co-Fe-Bi/CC shows outstanding activity with an overpotential of 460 mV to drive a geometrical catalytic current density of 10 mA cm
−2
in 0.1 M potassium borate (pH 9.2). Notably, it also demonstrates superior long-term durability for at least 20 h with 96% Faradic efficiency. Density functional theory calculations indicate that the conversion from OOH* to O
2
is the rate-limiting step and the high water oxidation activity of CoFe
2
O
4
@Co-Fe-Bi/CC is associated with the lower free energy of 1.84 eV on a Co-Fe-Bi shell.
Core-shell CoFe
2
O
4
@Co-Fe-Bi nanoarray on carbon cloth (CoFe
2
O
4
@Co-Fe-Bi/CC) acts as a durable water oxidation electrocatalyst with an overpotential of 460 mV to drive 10 mA cm
−2
in 0.1 M potassium borate (pH 9.2). |
| doi_str_mv | 10.1039/c7nr02929b |
| format | Article |
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2
O
4
@Co-Fe-Bi nanoarray on carbon cloth (CoFe
2
O
4
@Co-Fe-Bi/CC) was successfully fabricated by
in situ
surface amorphization of CoFe
2
O
4
nanoarray on CC (CoFe
2
O
4
/CC). As a 3D water oxidation electrode, CoFe
2
O
4
@Co-Fe-Bi/CC shows outstanding activity with an overpotential of 460 mV to drive a geometrical catalytic current density of 10 mA cm
−2
in 0.1 M potassium borate (pH 9.2). Notably, it also demonstrates superior long-term durability for at least 20 h with 96% Faradic efficiency. Density functional theory calculations indicate that the conversion from OOH* to O
2
is the rate-limiting step and the high water oxidation activity of CoFe
2
O
4
@Co-Fe-Bi/CC is associated with the lower free energy of 1.84 eV on a Co-Fe-Bi shell.
Core-shell CoFe
2
O
4
@Co-Fe-Bi nanoarray on carbon cloth (CoFe
2
O
4
@Co-Fe-Bi/CC) acts as a durable water oxidation electrocatalyst with an overpotential of 460 mV to drive 10 mA cm
−2
in 0.1 M potassium borate (pH 9.2).</description><identifier>ISSN: 2040-3364</identifier><identifier>EISSN: 2040-3372</identifier><identifier>DOI: 10.1039/c7nr02929b</identifier><language>eng</language><creationdate>2017-06</creationdate><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>315,781,785,27928,27929</link.rule.ids></links><search><creatorcontrib>Ji, Xuqiang</creatorcontrib><creatorcontrib>Hao, Shuai</creatorcontrib><creatorcontrib>Qu, Fengli</creatorcontrib><creatorcontrib>Liu, Jingquan</creatorcontrib><creatorcontrib>Du, Gu</creatorcontrib><creatorcontrib>Asiri, Abdullah M</creatorcontrib><creatorcontrib>Chen, Liang</creatorcontrib><creatorcontrib>Sun, Xuping</creatorcontrib><title>Core-shell CoFe2O4@Co-Fe-Bi nanoarray: a surface-amorphization water oxidation catalyst operating at near-neutral pHElectronic supplementary information (ESI) available: Experimental section and supplementary figures. See DOI: 10.1039/c7nr02929b</title><description>The exploration of high-performance and earth-abundant water oxidation catalysts operating under mild conditions is highly attractive and challenging. In this communication, core-shell CoFe
2
O
4
@Co-Fe-Bi nanoarray on carbon cloth (CoFe
2
O
4
@Co-Fe-Bi/CC) was successfully fabricated by
in situ
surface amorphization of CoFe
2
O
4
nanoarray on CC (CoFe
2
O
4
/CC). As a 3D water oxidation electrode, CoFe
2
O
4
@Co-Fe-Bi/CC shows outstanding activity with an overpotential of 460 mV to drive a geometrical catalytic current density of 10 mA cm
−2
in 0.1 M potassium borate (pH 9.2). Notably, it also demonstrates superior long-term durability for at least 20 h with 96% Faradic efficiency. Density functional theory calculations indicate that the conversion from OOH* to O
2
is the rate-limiting step and the high water oxidation activity of CoFe
2
O
4
@Co-Fe-Bi/CC is associated with the lower free energy of 1.84 eV on a Co-Fe-Bi shell.
Core-shell CoFe
2
O
4
@Co-Fe-Bi nanoarray on carbon cloth (CoFe
2
O
4
@Co-Fe-Bi/CC) acts as a durable water oxidation electrocatalyst with an overpotential of 460 mV to drive 10 mA cm
−2
in 0.1 M potassium borate (pH 9.2).</description><issn>2040-3364</issn><issn>2040-3372</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><sourceid/><recordid>eNqF0E1PAjEQBuDGaCKiF-8m400Pi2VLIMvJuC6BEwe8k2GZhZrSNtOirP_bu6sYTTTRU-fjzTNJhTjvyk5XquymHFiWaZZmiwPRSmVPJkoN0sOvut87FichPErZz1RftcRr7piSsCZjIHcjSqe929wlI0ruNFi0DpmxHgJC2HKFJSW4cezX-gWjdhaeMRKD2-nlvi8xoqlDBOeJm5FdAUawhJxY2kZGA35cGCojO6vLRvXe0IZsRK5B28rxZi9dFbPJNeATaoMLQ0Modg2pP6IGQiO8p9AufxiVXm2ZQgdmRHA_nQzh9-eciqMKTaCzz7ctLkbFQz5OOJRz3xxpoPl3XLXF5V_7uV9W6j_jDa8Fhvw</recordid><startdate>20170614</startdate><enddate>20170614</enddate><creator>Ji, Xuqiang</creator><creator>Hao, Shuai</creator><creator>Qu, Fengli</creator><creator>Liu, Jingquan</creator><creator>Du, Gu</creator><creator>Asiri, Abdullah M</creator><creator>Chen, Liang</creator><creator>Sun, Xuping</creator><scope/></search><sort><creationdate>20170614</creationdate><title>Core-shell CoFe2O4@Co-Fe-Bi nanoarray: a surface-amorphization water oxidation catalyst operating at near-neutral pHElectronic supplementary information (ESI) available: Experimental section and supplementary figures. See DOI: 10.1039/c7nr02929b</title><author>Ji, Xuqiang ; Hao, Shuai ; Qu, Fengli ; Liu, Jingquan ; Du, Gu ; Asiri, Abdullah M ; Chen, Liang ; Sun, Xuping</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-rsc_primary_c7nr02929b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><toplevel>online_resources</toplevel><creatorcontrib>Ji, Xuqiang</creatorcontrib><creatorcontrib>Hao, Shuai</creatorcontrib><creatorcontrib>Qu, Fengli</creatorcontrib><creatorcontrib>Liu, Jingquan</creatorcontrib><creatorcontrib>Du, Gu</creatorcontrib><creatorcontrib>Asiri, Abdullah M</creatorcontrib><creatorcontrib>Chen, Liang</creatorcontrib><creatorcontrib>Sun, Xuping</creatorcontrib></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ji, Xuqiang</au><au>Hao, Shuai</au><au>Qu, Fengli</au><au>Liu, Jingquan</au><au>Du, Gu</au><au>Asiri, Abdullah M</au><au>Chen, Liang</au><au>Sun, Xuping</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Core-shell CoFe2O4@Co-Fe-Bi nanoarray: a surface-amorphization water oxidation catalyst operating at near-neutral pHElectronic supplementary information (ESI) available: Experimental section and supplementary figures. See DOI: 10.1039/c7nr02929b</atitle><date>2017-06-14</date><risdate>2017</risdate><volume>9</volume><issue>23</issue><spage>7714</spage><epage>7718</epage><pages>7714-7718</pages><issn>2040-3364</issn><eissn>2040-3372</eissn><abstract>The exploration of high-performance and earth-abundant water oxidation catalysts operating under mild conditions is highly attractive and challenging. In this communication, core-shell CoFe
2
O
4
@Co-Fe-Bi nanoarray on carbon cloth (CoFe
2
O
4
@Co-Fe-Bi/CC) was successfully fabricated by
in situ
surface amorphization of CoFe
2
O
4
nanoarray on CC (CoFe
2
O
4
/CC). As a 3D water oxidation electrode, CoFe
2
O
4
@Co-Fe-Bi/CC shows outstanding activity with an overpotential of 460 mV to drive a geometrical catalytic current density of 10 mA cm
−2
in 0.1 M potassium borate (pH 9.2). Notably, it also demonstrates superior long-term durability for at least 20 h with 96% Faradic efficiency. Density functional theory calculations indicate that the conversion from OOH* to O
2
is the rate-limiting step and the high water oxidation activity of CoFe
2
O
4
@Co-Fe-Bi/CC is associated with the lower free energy of 1.84 eV on a Co-Fe-Bi shell.
Core-shell CoFe
2
O
4
@Co-Fe-Bi nanoarray on carbon cloth (CoFe
2
O
4
@Co-Fe-Bi/CC) acts as a durable water oxidation electrocatalyst with an overpotential of 460 mV to drive 10 mA cm
−2
in 0.1 M potassium borate (pH 9.2).</abstract><doi>10.1039/c7nr02929b</doi><tpages>5</tpages></addata></record> |
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| source | Royal Society Of Chemistry Journals 2008- |
| title | Core-shell CoFe2O4@Co-Fe-Bi nanoarray: a surface-amorphization water oxidation catalyst operating at near-neutral pHElectronic supplementary information (ESI) available: Experimental section and supplementary figures. See DOI: 10.1039/c7nr02929b |
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