Methanol oxidation catalysis and substructure of PtRu/C bimetallic nanoparticles synthesized by a radiolytic process
[Display omitted] ► Highly active PtRu/C nanoparticle catalysts are synthesized by a radiolytic process, which is a simple one-pot process without any use of surfactant, solvent or heating. ► The mixed state of PtRu is controlled by using high dose rates and additives to the synthetic solution. ► A...
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| Veröffentlicht in: | Applied catalysis. A, General General, 2011-04, Vol.396 (1), p.68-75 |
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| container_title | Applied catalysis. A, General |
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| creator | Yamamoto, Takao A. Kageyama, Satoru Seino, Satoshi Nitani, Hiroaki Nakagawa, Takashi Horioka, Ryo Honda, Yuji Ueno, Koji Daimon, Hideo |
| description | [Display omitted]
► Highly active PtRu/C nanoparticle catalysts are synthesized by a radiolytic process, which is a simple one-pot process without any use of surfactant, solvent or heating. ► The mixed state of PtRu is controlled by using high dose rates and additives to the synthetic solution. ► A correlation between the substructure of the catalysts and the activity of methanol oxidation was found.
Nanoparticle catalysts of PtRu/C for the direct methanol fuel cell anode were synthesized by a radiolytic process. Bimetallic substructures were controlled by varying irradiation dose rate and by addition of NH
4OH or NaH
2PO
2. Material characterization was performed with the transmission electron microscopy, the X-ray diffraction, the X-ray fluorescence spectroscopy and the X-ray absorption fine structure techniques. Methanol oxidation activity was evaluated by the linear sweep voltammetry. We concluded that the structure of the radiolytically synthesized catalysts has a Pt-rich core/Ru-rich shell structure or incomplete alloy structure. A correlation between the substructures and catalytic activities was found by using a pairing factor defined from coordination numbers determined by the extend X-ray absorption fine structure analysis, which indicates the validity of the bifunctional mechanism in the PtRu nanoparticle system. This radiolytic process is promising for synthesizing advanced PtRu/C catalysts with well-mixed bimetallic substructures enhancing methanol oxidation. |
| doi_str_mv | 10.1016/j.apcata.2011.01.037 |
| format | Article |
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► Highly active PtRu/C nanoparticle catalysts are synthesized by a radiolytic process, which is a simple one-pot process without any use of surfactant, solvent or heating. ► The mixed state of PtRu is controlled by using high dose rates and additives to the synthetic solution. ► A correlation between the substructure of the catalysts and the activity of methanol oxidation was found.
Nanoparticle catalysts of PtRu/C for the direct methanol fuel cell anode were synthesized by a radiolytic process. Bimetallic substructures were controlled by varying irradiation dose rate and by addition of NH
4OH or NaH
2PO
2. Material characterization was performed with the transmission electron microscopy, the X-ray diffraction, the X-ray fluorescence spectroscopy and the X-ray absorption fine structure techniques. Methanol oxidation activity was evaluated by the linear sweep voltammetry. We concluded that the structure of the radiolytically synthesized catalysts has a Pt-rich core/Ru-rich shell structure or incomplete alloy structure. A correlation between the substructures and catalytic activities was found by using a pairing factor defined from coordination numbers determined by the extend X-ray absorption fine structure analysis, which indicates the validity of the bifunctional mechanism in the PtRu nanoparticle system. This radiolytic process is promising for synthesizing advanced PtRu/C catalysts with well-mixed bimetallic substructures enhancing methanol oxidation.</description><identifier>ISSN: 0926-860X</identifier><identifier>EISSN: 1873-3875</identifier><identifier>DOI: 10.1016/j.apcata.2011.01.037</identifier><language>eng</language><publisher>Kidlington: Elsevier B.V</publisher><subject>Applied sciences ; Bimetallic catalyst ; Bimetals ; Catalysis ; Catalysts ; Chemistry ; Colloidal state and disperse state ; Energy ; Energy. Thermal use of fuels ; Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc ; Exact sciences and technology ; Fine structure ; Fuel cells ; General and physical chemistry ; Methanol oxidation ; Methyl alcohol ; Nanoparticles ; Oxidation ; Physical and chemical studies. Granulometry. Electrokinetic phenomena ; Platinum ; Radiolytic process ; Ruthenium ; Substructures ; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry ; X-rays</subject><ispartof>Applied catalysis. A, General, 2011-04, Vol.396 (1), p.68-75</ispartof><rights>2011 Elsevier B.V.</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c434t-804cb8edb3d06a6ba27931625a2a8c92e812881fa8ebbac7034110961194c8323</citedby><cites>FETCH-LOGICAL-c434t-804cb8edb3d06a6ba27931625a2a8c92e812881fa8ebbac7034110961194c8323</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.apcata.2011.01.037$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,778,782,3539,27907,27908,45978</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=24046674$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Yamamoto, Takao A.</creatorcontrib><creatorcontrib>Kageyama, Satoru</creatorcontrib><creatorcontrib>Seino, Satoshi</creatorcontrib><creatorcontrib>Nitani, Hiroaki</creatorcontrib><creatorcontrib>Nakagawa, Takashi</creatorcontrib><creatorcontrib>Horioka, Ryo</creatorcontrib><creatorcontrib>Honda, Yuji</creatorcontrib><creatorcontrib>Ueno, Koji</creatorcontrib><creatorcontrib>Daimon, Hideo</creatorcontrib><title>Methanol oxidation catalysis and substructure of PtRu/C bimetallic nanoparticles synthesized by a radiolytic process</title><title>Applied catalysis. A, General</title><description>[Display omitted]
► Highly active PtRu/C nanoparticle catalysts are synthesized by a radiolytic process, which is a simple one-pot process without any use of surfactant, solvent or heating. ► The mixed state of PtRu is controlled by using high dose rates and additives to the synthetic solution. ► A correlation between the substructure of the catalysts and the activity of methanol oxidation was found.
Nanoparticle catalysts of PtRu/C for the direct methanol fuel cell anode were synthesized by a radiolytic process. Bimetallic substructures were controlled by varying irradiation dose rate and by addition of NH
4OH or NaH
2PO
2. Material characterization was performed with the transmission electron microscopy, the X-ray diffraction, the X-ray fluorescence spectroscopy and the X-ray absorption fine structure techniques. Methanol oxidation activity was evaluated by the linear sweep voltammetry. We concluded that the structure of the radiolytically synthesized catalysts has a Pt-rich core/Ru-rich shell structure or incomplete alloy structure. A correlation between the substructures and catalytic activities was found by using a pairing factor defined from coordination numbers determined by the extend X-ray absorption fine structure analysis, which indicates the validity of the bifunctional mechanism in the PtRu nanoparticle system. This radiolytic process is promising for synthesizing advanced PtRu/C catalysts with well-mixed bimetallic substructures enhancing methanol oxidation.</description><subject>Applied sciences</subject><subject>Bimetallic catalyst</subject><subject>Bimetals</subject><subject>Catalysis</subject><subject>Catalysts</subject><subject>Chemistry</subject><subject>Colloidal state and disperse state</subject><subject>Energy</subject><subject>Energy. Thermal use of fuels</subject><subject>Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc</subject><subject>Exact sciences and technology</subject><subject>Fine structure</subject><subject>Fuel cells</subject><subject>General and physical chemistry</subject><subject>Methanol oxidation</subject><subject>Methyl alcohol</subject><subject>Nanoparticles</subject><subject>Oxidation</subject><subject>Physical and chemical studies. Granulometry. Electrokinetic phenomena</subject><subject>Platinum</subject><subject>Radiolytic process</subject><subject>Ruthenium</subject><subject>Substructures</subject><subject>Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry</subject><subject>X-rays</subject><issn>0926-860X</issn><issn>1873-3875</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><recordid>eNp9kE-LFDEQxRtRcFz9Bh5yEU89m3-TTl8EGVxdWFFEwVuoTlezGTKdMZUW209vhln2KBTUoX7vPeo1zWvBt4ILc33YwslDga3kQmx5HdU9aTbCdqpVtts9bTa8l6a1hv983rwgOnDOpe53m6Z8xnIPc4os_QkjlJBmdraKKwViMI-MloFKXnxZMrI0sa_l23K9Z0M4YsVi8Gyu-hPkEnxEYrTO5R4p_MWRDSsDlmEMKa71zE45eSR62TybIBK-ethXzY-bD9_3n9q7Lx9v9-_vWq-VLq3l2g8Wx0GN3IAZQHa9EkbuQIL1vUQrpLViAovDAL7jSgvBeyNEr71VUl01by--NffXglTcMZDHGGHGtJCzprdac8ErqS-kz4ko4-ROORwhr05wd-7YHdylY3fu2PE6qquyNw8BQB7ilGH2gR61UnNtTKcr9-7CYf32d8DsyAecPY4hoy9uTOH_Qf8A8JWWBQ</recordid><startdate>20110415</startdate><enddate>20110415</enddate><creator>Yamamoto, Takao A.</creator><creator>Kageyama, Satoru</creator><creator>Seino, Satoshi</creator><creator>Nitani, Hiroaki</creator><creator>Nakagawa, Takashi</creator><creator>Horioka, Ryo</creator><creator>Honda, Yuji</creator><creator>Ueno, Koji</creator><creator>Daimon, Hideo</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20110415</creationdate><title>Methanol oxidation catalysis and substructure of PtRu/C bimetallic nanoparticles synthesized by a radiolytic process</title><author>Yamamoto, Takao A. ; Kageyama, Satoru ; Seino, Satoshi ; Nitani, Hiroaki ; Nakagawa, Takashi ; Horioka, Ryo ; Honda, Yuji ; Ueno, Koji ; Daimon, Hideo</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c434t-804cb8edb3d06a6ba27931625a2a8c92e812881fa8ebbac7034110961194c8323</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Applied sciences</topic><topic>Bimetallic catalyst</topic><topic>Bimetals</topic><topic>Catalysis</topic><topic>Catalysts</topic><topic>Chemistry</topic><topic>Colloidal state and disperse state</topic><topic>Energy</topic><topic>Energy. Thermal use of fuels</topic><topic>Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc</topic><topic>Exact sciences and technology</topic><topic>Fine structure</topic><topic>Fuel cells</topic><topic>General and physical chemistry</topic><topic>Methanol oxidation</topic><topic>Methyl alcohol</topic><topic>Nanoparticles</topic><topic>Oxidation</topic><topic>Physical and chemical studies. Granulometry. Electrokinetic phenomena</topic><topic>Platinum</topic><topic>Radiolytic process</topic><topic>Ruthenium</topic><topic>Substructures</topic><topic>Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry</topic><topic>X-rays</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Yamamoto, Takao A.</creatorcontrib><creatorcontrib>Kageyama, Satoru</creatorcontrib><creatorcontrib>Seino, Satoshi</creatorcontrib><creatorcontrib>Nitani, Hiroaki</creatorcontrib><creatorcontrib>Nakagawa, Takashi</creatorcontrib><creatorcontrib>Horioka, Ryo</creatorcontrib><creatorcontrib>Honda, Yuji</creatorcontrib><creatorcontrib>Ueno, Koji</creatorcontrib><creatorcontrib>Daimon, Hideo</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><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><jtitle>Applied catalysis. A, General</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Yamamoto, Takao A.</au><au>Kageyama, Satoru</au><au>Seino, Satoshi</au><au>Nitani, Hiroaki</au><au>Nakagawa, Takashi</au><au>Horioka, Ryo</au><au>Honda, Yuji</au><au>Ueno, Koji</au><au>Daimon, Hideo</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Methanol oxidation catalysis and substructure of PtRu/C bimetallic nanoparticles synthesized by a radiolytic process</atitle><jtitle>Applied catalysis. A, General</jtitle><date>2011-04-15</date><risdate>2011</risdate><volume>396</volume><issue>1</issue><spage>68</spage><epage>75</epage><pages>68-75</pages><issn>0926-860X</issn><eissn>1873-3875</eissn><abstract>[Display omitted]
► Highly active PtRu/C nanoparticle catalysts are synthesized by a radiolytic process, which is a simple one-pot process without any use of surfactant, solvent or heating. ► The mixed state of PtRu is controlled by using high dose rates and additives to the synthetic solution. ► A correlation between the substructure of the catalysts and the activity of methanol oxidation was found.
Nanoparticle catalysts of PtRu/C for the direct methanol fuel cell anode were synthesized by a radiolytic process. Bimetallic substructures were controlled by varying irradiation dose rate and by addition of NH
4OH or NaH
2PO
2. Material characterization was performed with the transmission electron microscopy, the X-ray diffraction, the X-ray fluorescence spectroscopy and the X-ray absorption fine structure techniques. Methanol oxidation activity was evaluated by the linear sweep voltammetry. We concluded that the structure of the radiolytically synthesized catalysts has a Pt-rich core/Ru-rich shell structure or incomplete alloy structure. A correlation between the substructures and catalytic activities was found by using a pairing factor defined from coordination numbers determined by the extend X-ray absorption fine structure analysis, which indicates the validity of the bifunctional mechanism in the PtRu nanoparticle system. This radiolytic process is promising for synthesizing advanced PtRu/C catalysts with well-mixed bimetallic substructures enhancing methanol oxidation.</abstract><cop>Kidlington</cop><pub>Elsevier B.V</pub><doi>10.1016/j.apcata.2011.01.037</doi><tpages>8</tpages></addata></record> |
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| subjects | Applied sciences Bimetallic catalyst Bimetals Catalysis Catalysts Chemistry Colloidal state and disperse state Energy Energy. Thermal use of fuels Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc Exact sciences and technology Fine structure Fuel cells General and physical chemistry Methanol oxidation Methyl alcohol Nanoparticles Oxidation Physical and chemical studies. Granulometry. Electrokinetic phenomena Platinum Radiolytic process Ruthenium Substructures Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry X-rays |
| title | Methanol oxidation catalysis and substructure of PtRu/C bimetallic nanoparticles synthesized by a radiolytic process |
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