Ru Nanoparticles Encapsulated by Defective TiO2 Boost the Hydrogen Oxidation/ Evolution Reaction
The development of efficient and durable electrocatalysts for the alkaline hydrogen oxidation/evolution reaction is crucial for anion exchange membrane fuel cells/water electrolyzers. However, designing such electrocatalysts poses a challenge due to the need for optimizing various adsorbates. Herein...
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| creator | Fu, Xiuting Huang, Xiaoxiao Cen, Yaping Ren, Xiaoyang Yan, Li Jin, Shao Zhuang, Zhongbin Li, Wanlu Tian, Shubo |
| description | The development of efficient and durable electrocatalysts for the alkaline hydrogen oxidation/evolution reaction is crucial for anion exchange membrane fuel cells/water electrolyzers. However, designing such electrocatalysts poses a challenge due to the need for optimizing various adsorbates. Herein, highly dispersed Ru nanoparticles catalysts is reported encapsulated and supported by defective anatase phase of titanium dioxide (named as Ru NPs/def‐TiO2(A)) for boosting hydrogen‐cycle electrocatalysis with robust anti‐CO‐poisoning in alkaline conditions. The Ru NPs/def‐TiO2(A) achieves a high‐quality activity of 7.65 A mgRu
−1, which is 23.2 and 9.5‐fold higher than commercial Ru/C and Pt/C in alkaline HOR. Moreover, this catalyst exhibits an outstanding overpotential of 21 mV at 10 mA cm−2 in alkaline HER. Hydrogen underpotential deposition (Hupd) and CO stripping experiments demonstrate that Ru NPs/def‐TiO2(A) has the optimized H*, OH*, and CO* adsorption strength, enabling the Ru NPs/def‐TiO2(A) catalyst to display excellent and robust HOR/HER performance under alkaline conditions. Using density functional theory calculations, the enhanced HOR performance mechanism for the Ru NPs/def‐TiO2(A) catalyst originates from the TiO2 step face in contact with the Ru nanoparticles, indicating that the kinetics of water formation are considerably more favorable at the Ru NPs/def‐TiO2(A) interface.
By strong metal‐support interaction (SMSI) between metal Ru nanoparticles and TiO2, a bifunctional catalyst is constructed for the HOR/HER reaction, which is experimentally demonstrated to have optimized Had, OHad, COad adsorption, while its close‐contact structure (TiO2 step surfaces in contact with Ru nanoparticles) lead to more favorable water formation kinetics, and these greatly contribute to the enhanced HOR/HER activity. This study provides a promising strategy for modulating the catalyst structure through SMSI to achieve higher catalytic activity. |
| doi_str_mv | 10.1002/smll.202406387 |
| format | Article |
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−1, which is 23.2 and 9.5‐fold higher than commercial Ru/C and Pt/C in alkaline HOR. Moreover, this catalyst exhibits an outstanding overpotential of 21 mV at 10 mA cm−2 in alkaline HER. Hydrogen underpotential deposition (Hupd) and CO stripping experiments demonstrate that Ru NPs/def‐TiO2(A) has the optimized H*, OH*, and CO* adsorption strength, enabling the Ru NPs/def‐TiO2(A) catalyst to display excellent and robust HOR/HER performance under alkaline conditions. Using density functional theory calculations, the enhanced HOR performance mechanism for the Ru NPs/def‐TiO2(A) catalyst originates from the TiO2 step face in contact with the Ru nanoparticles, indicating that the kinetics of water formation are considerably more favorable at the Ru NPs/def‐TiO2(A) interface.
By strong metal‐support interaction (SMSI) between metal Ru nanoparticles and TiO2, a bifunctional catalyst is constructed for the HOR/HER reaction, which is experimentally demonstrated to have optimized Had, OHad, COad adsorption, while its close‐contact structure (TiO2 step surfaces in contact with Ru nanoparticles) lead to more favorable water formation kinetics, and these greatly contribute to the enhanced HOR/HER activity. This study provides a promising strategy for modulating the catalyst structure through SMSI to achieve higher catalytic activity.</description><identifier>ISSN: 1613-6810</identifier><identifier>ISSN: 1613-6829</identifier><identifier>EISSN: 1613-6829</identifier><identifier>DOI: 10.1002/smll.202406387</identifier><language>eng</language><publisher>Weinheim: Wiley Subscription Services, Inc</publisher><subject>Anatase ; Anion exchanging ; Catalysts ; defective TiO2 ; Density functional theory ; Electrocatalysts ; Electrolytic cells ; Encapsulation ; Fuel cells ; Hydrogen ; hydrogen evolution reaction ; hydrogen oxidation reaction ; Nanoparticles ; Oxidation ; Poisoning (reaction inhibition) ; Reaction kinetics ; Robustness ; Ru nanoparticles ; Ruthenium ; Titanium dioxide ; Underpotential deposition</subject><ispartof>Small (Weinheim an der Bergstrasse, Germany), 2024-12, Vol.20 (51), p.e2406387-n/a</ispartof><rights>2024 Wiley‐VCH GmbH</rights><rights>2024 Wiley‐VCH GmbH.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><orcidid>0000-0002-3209-7500</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fsmll.202406387$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fsmll.202406387$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1417,27923,27924,45573,45574</link.rule.ids></links><search><creatorcontrib>Fu, Xiuting</creatorcontrib><creatorcontrib>Huang, Xiaoxiao</creatorcontrib><creatorcontrib>Cen, Yaping</creatorcontrib><creatorcontrib>Ren, Xiaoyang</creatorcontrib><creatorcontrib>Yan, Li</creatorcontrib><creatorcontrib>Jin, Shao</creatorcontrib><creatorcontrib>Zhuang, Zhongbin</creatorcontrib><creatorcontrib>Li, Wanlu</creatorcontrib><creatorcontrib>Tian, Shubo</creatorcontrib><title>Ru Nanoparticles Encapsulated by Defective TiO2 Boost the Hydrogen Oxidation/ Evolution Reaction</title><title>Small (Weinheim an der Bergstrasse, Germany)</title><description>The development of efficient and durable electrocatalysts for the alkaline hydrogen oxidation/evolution reaction is crucial for anion exchange membrane fuel cells/water electrolyzers. However, designing such electrocatalysts poses a challenge due to the need for optimizing various adsorbates. Herein, highly dispersed Ru nanoparticles catalysts is reported encapsulated and supported by defective anatase phase of titanium dioxide (named as Ru NPs/def‐TiO2(A)) for boosting hydrogen‐cycle electrocatalysis with robust anti‐CO‐poisoning in alkaline conditions. The Ru NPs/def‐TiO2(A) achieves a high‐quality activity of 7.65 A mgRu
−1, which is 23.2 and 9.5‐fold higher than commercial Ru/C and Pt/C in alkaline HOR. Moreover, this catalyst exhibits an outstanding overpotential of 21 mV at 10 mA cm−2 in alkaline HER. Hydrogen underpotential deposition (Hupd) and CO stripping experiments demonstrate that Ru NPs/def‐TiO2(A) has the optimized H*, OH*, and CO* adsorption strength, enabling the Ru NPs/def‐TiO2(A) catalyst to display excellent and robust HOR/HER performance under alkaline conditions. Using density functional theory calculations, the enhanced HOR performance mechanism for the Ru NPs/def‐TiO2(A) catalyst originates from the TiO2 step face in contact with the Ru nanoparticles, indicating that the kinetics of water formation are considerably more favorable at the Ru NPs/def‐TiO2(A) interface.
By strong metal‐support interaction (SMSI) between metal Ru nanoparticles and TiO2, a bifunctional catalyst is constructed for the HOR/HER reaction, which is experimentally demonstrated to have optimized Had, OHad, COad adsorption, while its close‐contact structure (TiO2 step surfaces in contact with Ru nanoparticles) lead to more favorable water formation kinetics, and these greatly contribute to the enhanced HOR/HER activity. This study provides a promising strategy for modulating the catalyst structure through SMSI to achieve higher catalytic activity.</description><subject>Anatase</subject><subject>Anion exchanging</subject><subject>Catalysts</subject><subject>defective TiO2</subject><subject>Density functional theory</subject><subject>Electrocatalysts</subject><subject>Electrolytic cells</subject><subject>Encapsulation</subject><subject>Fuel cells</subject><subject>Hydrogen</subject><subject>hydrogen evolution reaction</subject><subject>hydrogen oxidation reaction</subject><subject>Nanoparticles</subject><subject>Oxidation</subject><subject>Poisoning (reaction inhibition)</subject><subject>Reaction kinetics</subject><subject>Robustness</subject><subject>Ru nanoparticles</subject><subject>Ruthenium</subject><subject>Titanium dioxide</subject><subject>Underpotential deposition</subject><issn>1613-6810</issn><issn>1613-6829</issn><issn>1613-6829</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><recordid>eNpdkD1PwzAQhiMEEqWwMltiYUnrs1M7GfkoFClQqZTZOIkNrtw4xEkh_55ERR245Z6THr06vUFwCXgCGJOp31o7IZhEmNGYHwUjYEBDFpPk-MCAT4Mz7zcYUyARHwXvqxa9yNJVsm5MbpVH8zKXlW-tbFSBsg7dK63yxuwUWpslQbfO-QY1nwotuqJ2H6pEyx9TyMa4cormO2fbAdFKyXyA8-BES-vVxd8eB28P8_XdIkyXj093N2lYEcp4qEjMOJtFAJwnEBda6ixLeKQwzQHiBIiOFcNE66L3dUQznM90VnCuJQGq6Ti43udWtftqlW_E1vhcWStL5VovKMAM94FAevXqn7pxbV323_VWxJJ-osFK9ta3saoTVW22su4EYDG0LYa2xaFt8fqcpoeL_gIM83V8</recordid><startdate>20241201</startdate><enddate>20241201</enddate><creator>Fu, Xiuting</creator><creator>Huang, Xiaoxiao</creator><creator>Cen, Yaping</creator><creator>Ren, Xiaoyang</creator><creator>Yan, Li</creator><creator>Jin, Shao</creator><creator>Zhuang, Zhongbin</creator><creator>Li, Wanlu</creator><creator>Tian, Shubo</creator><general>Wiley Subscription Services, Inc</general><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0002-3209-7500</orcidid></search><sort><creationdate>20241201</creationdate><title>Ru Nanoparticles Encapsulated by Defective TiO2 Boost the Hydrogen Oxidation/ Evolution Reaction</title><author>Fu, Xiuting ; Huang, Xiaoxiao ; Cen, Yaping ; Ren, Xiaoyang ; Yan, Li ; Jin, Shao ; Zhuang, Zhongbin ; Li, Wanlu ; Tian, Shubo</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-p2367-e28676541177918dfafbb974e03c118912f8e602ffd236f43b0c5fbd77fa213f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>Anatase</topic><topic>Anion exchanging</topic><topic>Catalysts</topic><topic>defective TiO2</topic><topic>Density functional theory</topic><topic>Electrocatalysts</topic><topic>Electrolytic cells</topic><topic>Encapsulation</topic><topic>Fuel cells</topic><topic>Hydrogen</topic><topic>hydrogen evolution reaction</topic><topic>hydrogen oxidation reaction</topic><topic>Nanoparticles</topic><topic>Oxidation</topic><topic>Poisoning (reaction inhibition)</topic><topic>Reaction kinetics</topic><topic>Robustness</topic><topic>Ru nanoparticles</topic><topic>Ruthenium</topic><topic>Titanium dioxide</topic><topic>Underpotential deposition</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Fu, Xiuting</creatorcontrib><creatorcontrib>Huang, Xiaoxiao</creatorcontrib><creatorcontrib>Cen, Yaping</creatorcontrib><creatorcontrib>Ren, Xiaoyang</creatorcontrib><creatorcontrib>Yan, Li</creatorcontrib><creatorcontrib>Jin, Shao</creatorcontrib><creatorcontrib>Zhuang, Zhongbin</creatorcontrib><creatorcontrib>Li, Wanlu</creatorcontrib><creatorcontrib>Tian, Shubo</creatorcontrib><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>MEDLINE - Academic</collection><jtitle>Small (Weinheim an der Bergstrasse, Germany)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Fu, Xiuting</au><au>Huang, Xiaoxiao</au><au>Cen, Yaping</au><au>Ren, Xiaoyang</au><au>Yan, Li</au><au>Jin, Shao</au><au>Zhuang, Zhongbin</au><au>Li, Wanlu</au><au>Tian, Shubo</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Ru Nanoparticles Encapsulated by Defective TiO2 Boost the Hydrogen Oxidation/ Evolution Reaction</atitle><jtitle>Small (Weinheim an der Bergstrasse, Germany)</jtitle><date>2024-12-01</date><risdate>2024</risdate><volume>20</volume><issue>51</issue><spage>e2406387</spage><epage>n/a</epage><pages>e2406387-n/a</pages><issn>1613-6810</issn><issn>1613-6829</issn><eissn>1613-6829</eissn><abstract>The development of efficient and durable electrocatalysts for the alkaline hydrogen oxidation/evolution reaction is crucial for anion exchange membrane fuel cells/water electrolyzers. However, designing such electrocatalysts poses a challenge due to the need for optimizing various adsorbates. Herein, highly dispersed Ru nanoparticles catalysts is reported encapsulated and supported by defective anatase phase of titanium dioxide (named as Ru NPs/def‐TiO2(A)) for boosting hydrogen‐cycle electrocatalysis with robust anti‐CO‐poisoning in alkaline conditions. The Ru NPs/def‐TiO2(A) achieves a high‐quality activity of 7.65 A mgRu
−1, which is 23.2 and 9.5‐fold higher than commercial Ru/C and Pt/C in alkaline HOR. Moreover, this catalyst exhibits an outstanding overpotential of 21 mV at 10 mA cm−2 in alkaline HER. Hydrogen underpotential deposition (Hupd) and CO stripping experiments demonstrate that Ru NPs/def‐TiO2(A) has the optimized H*, OH*, and CO* adsorption strength, enabling the Ru NPs/def‐TiO2(A) catalyst to display excellent and robust HOR/HER performance under alkaline conditions. Using density functional theory calculations, the enhanced HOR performance mechanism for the Ru NPs/def‐TiO2(A) catalyst originates from the TiO2 step face in contact with the Ru nanoparticles, indicating that the kinetics of water formation are considerably more favorable at the Ru NPs/def‐TiO2(A) interface.
By strong metal‐support interaction (SMSI) between metal Ru nanoparticles and TiO2, a bifunctional catalyst is constructed for the HOR/HER reaction, which is experimentally demonstrated to have optimized Had, OHad, COad adsorption, while its close‐contact structure (TiO2 step surfaces in contact with Ru nanoparticles) lead to more favorable water formation kinetics, and these greatly contribute to the enhanced HOR/HER activity. This study provides a promising strategy for modulating the catalyst structure through SMSI to achieve higher catalytic activity.</abstract><cop>Weinheim</cop><pub>Wiley Subscription Services, Inc</pub><doi>10.1002/smll.202406387</doi><tpages>9</tpages><orcidid>https://orcid.org/0000-0002-3209-7500</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | Anatase Anion exchanging Catalysts defective TiO2 Density functional theory Electrocatalysts Electrolytic cells Encapsulation Fuel cells Hydrogen hydrogen evolution reaction hydrogen oxidation reaction Nanoparticles Oxidation Poisoning (reaction inhibition) Reaction kinetics Robustness Ru nanoparticles Ruthenium Titanium dioxide Underpotential deposition |
| title | Ru Nanoparticles Encapsulated by Defective TiO2 Boost the Hydrogen Oxidation/ Evolution Reaction |
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