Oxygen-vacancy-containing Nb 2 O 5 nanorods with modified semiconductor character for boosting selective nitrate-to-ammonia electroreduction
Electrocatalytic NO 3 − reduction to ammonia (ENRA) is a sustainable approach that allows the direct synthesis of ammonia at room temperature, while solving the problem of nitrate polluted effluents. Herein, we demonstrate that the oxygen vacancies (OVs) in Nb 2 O 5 (Nb 2 O 5− x ) nanorods exhibit s...
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| Veröffentlicht in: | Sustainable energy & fuels 2022-04, Vol.6 (8), p.2062-2066 |
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| container_title | Sustainable energy & fuels |
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| creator | Cao, Bo Xu, Xun Hong, Zhuozheng Liao, Junzhi Li, Ping Zhang, Hao Duo, Shuwang |
| description | Electrocatalytic NO
3
−
reduction to ammonia (ENRA) is a sustainable approach that allows the direct synthesis of ammonia at room temperature, while solving the problem of nitrate polluted effluents. Herein, we demonstrate that the oxygen vacancies (OVs) in Nb
2
O
5
(Nb
2
O
5−
x
) nanorods exhibit significantly enhanced ENRA activity, with an ammonia faradaic efficiency of 85.1% and selectivity of 90.8% at −1.1 V
versus
the reversible hydrogen electrode (RHE). Introducing OVs not only improves the surface activity but also facilitates the charge transport of Nb
2
O
5−
x
. Moreover, the OV-engineered surface of Nb
2
O
5−
x
alters the semiconducting behaviour of the catalyst by suppressing the hydrogen evolution reaction (HER) to improve the selective production of ammonia. We believe that this research will pave the way for the development of defect-engineered metal oxide catalysts for the selective ENRA process. |
| doi_str_mv | 10.1039/D1SE01855H |
| format | Article |
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3
−
reduction to ammonia (ENRA) is a sustainable approach that allows the direct synthesis of ammonia at room temperature, while solving the problem of nitrate polluted effluents. Herein, we demonstrate that the oxygen vacancies (OVs) in Nb
2
O
5
(Nb
2
O
5−
x
) nanorods exhibit significantly enhanced ENRA activity, with an ammonia faradaic efficiency of 85.1% and selectivity of 90.8% at −1.1 V
versus
the reversible hydrogen electrode (RHE). Introducing OVs not only improves the surface activity but also facilitates the charge transport of Nb
2
O
5−
x
. Moreover, the OV-engineered surface of Nb
2
O
5−
x
alters the semiconducting behaviour of the catalyst by suppressing the hydrogen evolution reaction (HER) to improve the selective production of ammonia. We believe that this research will pave the way for the development of defect-engineered metal oxide catalysts for the selective ENRA process.</description><identifier>ISSN: 2398-4902</identifier><identifier>EISSN: 2398-4902</identifier><identifier>DOI: 10.1039/D1SE01855H</identifier><language>eng</language><ispartof>Sustainable energy & fuels, 2022-04, Vol.6 (8), p.2062-2066</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c76H-d88c55a0e2184bd3e2642f3f790a59c4e8c97a55a6d905888899eee1f92953043</citedby><cites>FETCH-LOGICAL-c76H-d88c55a0e2184bd3e2642f3f790a59c4e8c97a55a6d905888899eee1f92953043</cites><orcidid>0000-0001-7090-4978 ; 0000-0002-2696-9966 ; 0000-0002-6921-781X ; 0000-0003-0031-4926</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>Cao, Bo</creatorcontrib><creatorcontrib>Xu, Xun</creatorcontrib><creatorcontrib>Hong, Zhuozheng</creatorcontrib><creatorcontrib>Liao, Junzhi</creatorcontrib><creatorcontrib>Li, Ping</creatorcontrib><creatorcontrib>Zhang, Hao</creatorcontrib><creatorcontrib>Duo, Shuwang</creatorcontrib><title>Oxygen-vacancy-containing Nb 2 O 5 nanorods with modified semiconductor character for boosting selective nitrate-to-ammonia electroreduction</title><title>Sustainable energy & fuels</title><description>Electrocatalytic NO
3
−
reduction to ammonia (ENRA) is a sustainable approach that allows the direct synthesis of ammonia at room temperature, while solving the problem of nitrate polluted effluents. Herein, we demonstrate that the oxygen vacancies (OVs) in Nb
2
O
5
(Nb
2
O
5−
x
) nanorods exhibit significantly enhanced ENRA activity, with an ammonia faradaic efficiency of 85.1% and selectivity of 90.8% at −1.1 V
versus
the reversible hydrogen electrode (RHE). Introducing OVs not only improves the surface activity but also facilitates the charge transport of Nb
2
O
5−
x
. Moreover, the OV-engineered surface of Nb
2
O
5−
x
alters the semiconducting behaviour of the catalyst by suppressing the hydrogen evolution reaction (HER) to improve the selective production of ammonia. We believe that this research will pave the way for the development of defect-engineered metal oxide catalysts for the selective ENRA process.</description><issn>2398-4902</issn><issn>2398-4902</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><recordid>eNpNkM1KAzEUhYMoWGo3PkHWQjQ_k06ylFqtUOzC7oc0udNGOokksTrv4EM7VUHv5tzDOXyLg9Alo9eMCn1zx57nlCkpFydoxIVWpNKUn_77z9Ek5xdKKWe84rIeoc_VR7-FQA7GmmB7YmMoxgcftvhpgzleYYmDCTFFl_G7LzvcRedbDw5n6PxQd2-2xITtziRjCyTcDm4TYy5HSIY92OIPgIMvyRQgJRLTdTF4g7-zFBMcGT6GC3TWmn2Gya-O0fp-vp4tyHL18Di7XRJbTxfEKWWlNBQ4U9XGCeDTireirTU1UtsKlNW1GRpTp6lUw2kNAKzVXEtBKzFGVz9Ym2LOCdrmNfnOpL5htDku2fwtKb4Ap9loqA</recordid><startdate>20220412</startdate><enddate>20220412</enddate><creator>Cao, Bo</creator><creator>Xu, Xun</creator><creator>Hong, Zhuozheng</creator><creator>Liao, Junzhi</creator><creator>Li, Ping</creator><creator>Zhang, Hao</creator><creator>Duo, Shuwang</creator><scope>AAYXX</scope><scope>CITATION</scope><orcidid>https://orcid.org/0000-0001-7090-4978</orcidid><orcidid>https://orcid.org/0000-0002-2696-9966</orcidid><orcidid>https://orcid.org/0000-0002-6921-781X</orcidid><orcidid>https://orcid.org/0000-0003-0031-4926</orcidid></search><sort><creationdate>20220412</creationdate><title>Oxygen-vacancy-containing Nb 2 O 5 nanorods with modified semiconductor character for boosting selective nitrate-to-ammonia electroreduction</title><author>Cao, Bo ; Xu, Xun ; Hong, Zhuozheng ; Liao, Junzhi ; Li, Ping ; Zhang, Hao ; Duo, Shuwang</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c76H-d88c55a0e2184bd3e2642f3f790a59c4e8c97a55a6d905888899eee1f92953043</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Cao, Bo</creatorcontrib><creatorcontrib>Xu, Xun</creatorcontrib><creatorcontrib>Hong, Zhuozheng</creatorcontrib><creatorcontrib>Liao, Junzhi</creatorcontrib><creatorcontrib>Li, Ping</creatorcontrib><creatorcontrib>Zhang, Hao</creatorcontrib><creatorcontrib>Duo, Shuwang</creatorcontrib><collection>CrossRef</collection><jtitle>Sustainable energy & fuels</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Cao, Bo</au><au>Xu, Xun</au><au>Hong, Zhuozheng</au><au>Liao, Junzhi</au><au>Li, Ping</au><au>Zhang, Hao</au><au>Duo, Shuwang</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Oxygen-vacancy-containing Nb 2 O 5 nanorods with modified semiconductor character for boosting selective nitrate-to-ammonia electroreduction</atitle><jtitle>Sustainable energy & fuels</jtitle><date>2022-04-12</date><risdate>2022</risdate><volume>6</volume><issue>8</issue><spage>2062</spage><epage>2066</epage><pages>2062-2066</pages><issn>2398-4902</issn><eissn>2398-4902</eissn><abstract>Electrocatalytic NO
3
−
reduction to ammonia (ENRA) is a sustainable approach that allows the direct synthesis of ammonia at room temperature, while solving the problem of nitrate polluted effluents. Herein, we demonstrate that the oxygen vacancies (OVs) in Nb
2
O
5
(Nb
2
O
5−
x
) nanorods exhibit significantly enhanced ENRA activity, with an ammonia faradaic efficiency of 85.1% and selectivity of 90.8% at −1.1 V
versus
the reversible hydrogen electrode (RHE). Introducing OVs not only improves the surface activity but also facilitates the charge transport of Nb
2
O
5−
x
. Moreover, the OV-engineered surface of Nb
2
O
5−
x
alters the semiconducting behaviour of the catalyst by suppressing the hydrogen evolution reaction (HER) to improve the selective production of ammonia. We believe that this research will pave the way for the development of defect-engineered metal oxide catalysts for the selective ENRA process.</abstract><doi>10.1039/D1SE01855H</doi><tpages>5</tpages><orcidid>https://orcid.org/0000-0001-7090-4978</orcidid><orcidid>https://orcid.org/0000-0002-2696-9966</orcidid><orcidid>https://orcid.org/0000-0002-6921-781X</orcidid><orcidid>https://orcid.org/0000-0003-0031-4926</orcidid></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 2398-4902 |
| ispartof | Sustainable energy & fuels, 2022-04, Vol.6 (8), p.2062-2066 |
| issn | 2398-4902 2398-4902 |
| language | eng |
| recordid | cdi_crossref_primary_10_1039_D1SE01855H |
| source | Royal Society Of Chemistry Journals 2008- |
| title | Oxygen-vacancy-containing Nb 2 O 5 nanorods with modified semiconductor character for boosting selective nitrate-to-ammonia electroreduction |
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