Identifying the electrocatalytic active sites of a Ru-based catalyst with high Faraday efficiency in CO 2 -saturated media for an aqueous Zn–CO 2 system
Developing a cost-effective, scalable, and efficient electrocatalyst for the hydrogen evolution reaction (HER) is the heart of producing pure hydrogen in practical applications. In this work, a unique approach to allow ruthenium (Ru) nanoparticles on carboxyl-functionalized porous sphere carbon (CF-...
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| Veröffentlicht in: | Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2020-08, Vol.8 (30), p.14927-14934 |
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| creator | Kim, Jeongwon Yang, Yejin Seong, Arim Noh, Hyuk-Jun Kim, Changmin Joo, Sangwook Cho, Ara Zhang, Linjuan Zhou, Jing Wang, Jian-Qiang Han, Jeong Woo Mahmood, Javeed Baek, Jong-Beom Kim, Guntae |
| description | Developing a cost-effective, scalable, and efficient electrocatalyst for the hydrogen evolution reaction (HER) is the heart of producing pure hydrogen in practical applications. In this work, a unique approach to allow ruthenium (Ru) nanoparticles on carboxyl-functionalized porous sphere carbon (CF-Ru@PSC) for an aqueous Zn–CO
2
system is reported. The CF-Ru@PSC catalyst was produced by inducing additional junction sites between metallic Ru and the carbon substrate for enhanced HER properties under a CO
2
saturated condition. The strongly bonded Ru–C caused electron transfer from the bottom side of the metallic Ru to the PSC substrate, leading to efficient hydrogen adsorption energy of the surface. The DFT calculations and XAFS investigation suggested that the reconstructed electronic configuration from the Ru–C linkage acted as an efficient active site for HER. The CF-Ru@PSC electrocatalyst presented a high turnover frequency of 2.70H
2
s
−1
at an overpotential of 0.20 V in the CO
2
-saturated condition and high Faraday efficiency (98.2%) over 1000 min in the aqueous Zn–CO
2
system. |
| doi_str_mv | 10.1039/D0TA03050C |
| format | Article |
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2
system is reported. The CF-Ru@PSC catalyst was produced by inducing additional junction sites between metallic Ru and the carbon substrate for enhanced HER properties under a CO
2
saturated condition. The strongly bonded Ru–C caused electron transfer from the bottom side of the metallic Ru to the PSC substrate, leading to efficient hydrogen adsorption energy of the surface. The DFT calculations and XAFS investigation suggested that the reconstructed electronic configuration from the Ru–C linkage acted as an efficient active site for HER. The CF-Ru@PSC electrocatalyst presented a high turnover frequency of 2.70H
2
s
−1
at an overpotential of 0.20 V in the CO
2
-saturated condition and high Faraday efficiency (98.2%) over 1000 min in the aqueous Zn–CO
2
system.</description><identifier>ISSN: 2050-7488</identifier><identifier>EISSN: 2050-7496</identifier><identifier>DOI: 10.1039/D0TA03050C</identifier><language>eng</language><ispartof>Journal of materials chemistry. A, Materials for energy and sustainability, 2020-08, Vol.8 (30), p.14927-14934</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c76C-22ce9de0943c7b1391182bcb457b15b0ab3020192081204d84643b4fbae85bbe3</citedby><cites>FETCH-LOGICAL-c76C-22ce9de0943c7b1391182bcb457b15b0ab3020192081204d84643b4fbae85bbe3</cites><orcidid>0000-0003-4123-7592 ; 0000-0002-9159-3336 ; 0000-0003-4785-2326 ; 0000-0002-5683-3613 ; 0000-0001-5676-5844 ; 0000-0002-5167-0982</orcidid></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>Kim, Jeongwon</creatorcontrib><creatorcontrib>Yang, Yejin</creatorcontrib><creatorcontrib>Seong, Arim</creatorcontrib><creatorcontrib>Noh, Hyuk-Jun</creatorcontrib><creatorcontrib>Kim, Changmin</creatorcontrib><creatorcontrib>Joo, Sangwook</creatorcontrib><creatorcontrib>Cho, Ara</creatorcontrib><creatorcontrib>Zhang, Linjuan</creatorcontrib><creatorcontrib>Zhou, Jing</creatorcontrib><creatorcontrib>Wang, Jian-Qiang</creatorcontrib><creatorcontrib>Han, Jeong Woo</creatorcontrib><creatorcontrib>Mahmood, Javeed</creatorcontrib><creatorcontrib>Baek, Jong-Beom</creatorcontrib><creatorcontrib>Kim, Guntae</creatorcontrib><title>Identifying the electrocatalytic active sites of a Ru-based catalyst with high Faraday efficiency in CO 2 -saturated media for an aqueous Zn–CO 2 system</title><title>Journal of materials chemistry. A, Materials for energy and sustainability</title><description>Developing a cost-effective, scalable, and efficient electrocatalyst for the hydrogen evolution reaction (HER) is the heart of producing pure hydrogen in practical applications. In this work, a unique approach to allow ruthenium (Ru) nanoparticles on carboxyl-functionalized porous sphere carbon (CF-Ru@PSC) for an aqueous Zn–CO
2
system is reported. The CF-Ru@PSC catalyst was produced by inducing additional junction sites between metallic Ru and the carbon substrate for enhanced HER properties under a CO
2
saturated condition. The strongly bonded Ru–C caused electron transfer from the bottom side of the metallic Ru to the PSC substrate, leading to efficient hydrogen adsorption energy of the surface. The DFT calculations and XAFS investigation suggested that the reconstructed electronic configuration from the Ru–C linkage acted as an efficient active site for HER. The CF-Ru@PSC electrocatalyst presented a high turnover frequency of 2.70H
2
s
−1
at an overpotential of 0.20 V in the CO
2
-saturated condition and high Faraday efficiency (98.2%) over 1000 min in the aqueous Zn–CO
2
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2
system is reported. The CF-Ru@PSC catalyst was produced by inducing additional junction sites between metallic Ru and the carbon substrate for enhanced HER properties under a CO
2
saturated condition. The strongly bonded Ru–C caused electron transfer from the bottom side of the metallic Ru to the PSC substrate, leading to efficient hydrogen adsorption energy of the surface. The DFT calculations and XAFS investigation suggested that the reconstructed electronic configuration from the Ru–C linkage acted as an efficient active site for HER. The CF-Ru@PSC electrocatalyst presented a high turnover frequency of 2.70H
2
s
−1
at an overpotential of 0.20 V in the CO
2
-saturated condition and high Faraday efficiency (98.2%) over 1000 min in the aqueous Zn–CO
2
system.</abstract><doi>10.1039/D0TA03050C</doi><tpages>8</tpages><orcidid>https://orcid.org/0000-0003-4123-7592</orcidid><orcidid>https://orcid.org/0000-0002-9159-3336</orcidid><orcidid>https://orcid.org/0000-0003-4785-2326</orcidid><orcidid>https://orcid.org/0000-0002-5683-3613</orcidid><orcidid>https://orcid.org/0000-0001-5676-5844</orcidid><orcidid>https://orcid.org/0000-0002-5167-0982</orcidid></addata></record> |
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| source | Royal Society Of Chemistry Journals 2008- |
| title | Identifying the electrocatalytic active sites of a Ru-based catalyst with high Faraday efficiency in CO 2 -saturated media for an aqueous Zn–CO 2 system |
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