Spontaneous deposition of Ru on Pt (100): morphological and electrochemical studies. Preliminary results of ethanol oxidation at Pt(100)/Ru

In the present work ruthenium was deposited in submonolayer amounts on Pt(100) by spontaneous deposition at several deposition times. The Pt (100)/Ru surfaces were analyzed using ex-situ STM to image the deposits characteristic of ruthenium on Pt (100). It was observed the formation of ruthenium isl...
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Autor*in:	Colle Vinicius D. [verfasserIn] Giz M. Janete [verfasserIn] Tremiliosi-Filho Germano [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2003

Schlagwörter:	STM cyclic voltammetry Pt(100)/Ru ethanol oxidation

Übergeordnetes Werk:	In: Journal of the Brazilian Chemical Society - Sociedade Brasileira de Química, 2017, 14(2003), 4, Seite 601-609
Übergeordnetes Werk:	volume:14 ; year:2003 ; number:4 ; pages:601-609

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Katalog-ID:	DOAJ05746443X

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520			\|a In the present work ruthenium was deposited in submonolayer amounts on Pt(100) by spontaneous deposition at several deposition times. The Pt (100)/Ru surfaces were analyzed using ex-situ STM to image the deposits characteristic of ruthenium on Pt (100). It was observed the formation of ruthenium islands with diameters between 1.0 and 4.5 nm with bi-atomic thickness in the center of the islands. A homogeneous distribution of the ruthenium islands on the platinum terraces was found, with no preferential deposition on steps or surface defect sites. The ruthenium coverage degree had been calculated by the decrease of charge of the hydrogen adsorption-desorption peaks in the cyclic voltammograms of the Pt(100)/Ru electrodes. The Pt(100)/Ru electrodes with a ruthenium coverage degree of ca. 0.3 showed a high activity for the ethanol electrooxidation. The electrochemical experimental results support strongly the bifunctional mechanism for the enhanced ethanol oxidation.
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allfields	(DE-627)DOAJ05746443X (DE-599)DOAJ0fe1f5787ac04f58b9f147aacb139160 DE-627 ger DE-627 rakwb eng QD1-999 Colle Vinicius D. verfasserin aut Spontaneous deposition of Ru on Pt (100): morphological and electrochemical studies. Preliminary results of ethanol oxidation at Pt(100)/Ru 2003 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier In the present work ruthenium was deposited in submonolayer amounts on Pt(100) by spontaneous deposition at several deposition times. The Pt (100)/Ru surfaces were analyzed using ex-situ STM to image the deposits characteristic of ruthenium on Pt (100). It was observed the formation of ruthenium islands with diameters between 1.0 and 4.5 nm with bi-atomic thickness in the center of the islands. A homogeneous distribution of the ruthenium islands on the platinum terraces was found, with no preferential deposition on steps or surface defect sites. The ruthenium coverage degree had been calculated by the decrease of charge of the hydrogen adsorption-desorption peaks in the cyclic voltammograms of the Pt(100)/Ru electrodes. The Pt(100)/Ru electrodes with a ruthenium coverage degree of ca. 0.3 showed a high activity for the ethanol electrooxidation. The electrochemical experimental results support strongly the bifunctional mechanism for the enhanced ethanol oxidation. STM cyclic voltammetry Pt(100)/Ru ethanol oxidation Chemistry Giz M. Janete verfasserin aut Tremiliosi-Filho Germano verfasserin aut In Journal of the Brazilian Chemical Society Sociedade Brasileira de Química, 2017 14(2003), 4, Seite 601-609 (DE-627)32461330X (DE-600)2028738-0 16784790 nnns volume:14 year:2003 number:4 pages:601-609 https://doaj.org/article/0fe1f5787ac04f58b9f147aacb139160 kostenfrei http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532003000400017 kostenfrei https://doaj.org/toc/0103-5053 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 14 2003 4 601-609
spelling	(DE-627)DOAJ05746443X (DE-599)DOAJ0fe1f5787ac04f58b9f147aacb139160 DE-627 ger DE-627 rakwb eng QD1-999 Colle Vinicius D. verfasserin aut Spontaneous deposition of Ru on Pt (100): morphological and electrochemical studies. Preliminary results of ethanol oxidation at Pt(100)/Ru 2003 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier In the present work ruthenium was deposited in submonolayer amounts on Pt(100) by spontaneous deposition at several deposition times. The Pt (100)/Ru surfaces were analyzed using ex-situ STM to image the deposits characteristic of ruthenium on Pt (100). It was observed the formation of ruthenium islands with diameters between 1.0 and 4.5 nm with bi-atomic thickness in the center of the islands. A homogeneous distribution of the ruthenium islands on the platinum terraces was found, with no preferential deposition on steps or surface defect sites. The ruthenium coverage degree had been calculated by the decrease of charge of the hydrogen adsorption-desorption peaks in the cyclic voltammograms of the Pt(100)/Ru electrodes. The Pt(100)/Ru electrodes with a ruthenium coverage degree of ca. 0.3 showed a high activity for the ethanol electrooxidation. The electrochemical experimental results support strongly the bifunctional mechanism for the enhanced ethanol oxidation. STM cyclic voltammetry Pt(100)/Ru ethanol oxidation Chemistry Giz M. Janete verfasserin aut Tremiliosi-Filho Germano verfasserin aut In Journal of the Brazilian Chemical Society Sociedade Brasileira de Química, 2017 14(2003), 4, Seite 601-609 (DE-627)32461330X (DE-600)2028738-0 16784790 nnns volume:14 year:2003 number:4 pages:601-609 https://doaj.org/article/0fe1f5787ac04f58b9f147aacb139160 kostenfrei http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532003000400017 kostenfrei https://doaj.org/toc/0103-5053 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 14 2003 4 601-609
allfields_unstemmed	(DE-627)DOAJ05746443X (DE-599)DOAJ0fe1f5787ac04f58b9f147aacb139160 DE-627 ger DE-627 rakwb eng QD1-999 Colle Vinicius D. verfasserin aut Spontaneous deposition of Ru on Pt (100): morphological and electrochemical studies. Preliminary results of ethanol oxidation at Pt(100)/Ru 2003 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier In the present work ruthenium was deposited in submonolayer amounts on Pt(100) by spontaneous deposition at several deposition times. The Pt (100)/Ru surfaces were analyzed using ex-situ STM to image the deposits characteristic of ruthenium on Pt (100). It was observed the formation of ruthenium islands with diameters between 1.0 and 4.5 nm with bi-atomic thickness in the center of the islands. A homogeneous distribution of the ruthenium islands on the platinum terraces was found, with no preferential deposition on steps or surface defect sites. The ruthenium coverage degree had been calculated by the decrease of charge of the hydrogen adsorption-desorption peaks in the cyclic voltammograms of the Pt(100)/Ru electrodes. The Pt(100)/Ru electrodes with a ruthenium coverage degree of ca. 0.3 showed a high activity for the ethanol electrooxidation. The electrochemical experimental results support strongly the bifunctional mechanism for the enhanced ethanol oxidation. STM cyclic voltammetry Pt(100)/Ru ethanol oxidation Chemistry Giz M. Janete verfasserin aut Tremiliosi-Filho Germano verfasserin aut In Journal of the Brazilian Chemical Society Sociedade Brasileira de Química, 2017 14(2003), 4, Seite 601-609 (DE-627)32461330X (DE-600)2028738-0 16784790 nnns volume:14 year:2003 number:4 pages:601-609 https://doaj.org/article/0fe1f5787ac04f58b9f147aacb139160 kostenfrei http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532003000400017 kostenfrei https://doaj.org/toc/0103-5053 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 14 2003 4 601-609
allfieldsGer	(DE-627)DOAJ05746443X (DE-599)DOAJ0fe1f5787ac04f58b9f147aacb139160 DE-627 ger DE-627 rakwb eng QD1-999 Colle Vinicius D. verfasserin aut Spontaneous deposition of Ru on Pt (100): morphological and electrochemical studies. Preliminary results of ethanol oxidation at Pt(100)/Ru 2003 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier In the present work ruthenium was deposited in submonolayer amounts on Pt(100) by spontaneous deposition at several deposition times. The Pt (100)/Ru surfaces were analyzed using ex-situ STM to image the deposits characteristic of ruthenium on Pt (100). It was observed the formation of ruthenium islands with diameters between 1.0 and 4.5 nm with bi-atomic thickness in the center of the islands. A homogeneous distribution of the ruthenium islands on the platinum terraces was found, with no preferential deposition on steps or surface defect sites. The ruthenium coverage degree had been calculated by the decrease of charge of the hydrogen adsorption-desorption peaks in the cyclic voltammograms of the Pt(100)/Ru electrodes. The Pt(100)/Ru electrodes with a ruthenium coverage degree of ca. 0.3 showed a high activity for the ethanol electrooxidation. The electrochemical experimental results support strongly the bifunctional mechanism for the enhanced ethanol oxidation. STM cyclic voltammetry Pt(100)/Ru ethanol oxidation Chemistry Giz M. Janete verfasserin aut Tremiliosi-Filho Germano verfasserin aut In Journal of the Brazilian Chemical Society Sociedade Brasileira de Química, 2017 14(2003), 4, Seite 601-609 (DE-627)32461330X (DE-600)2028738-0 16784790 nnns volume:14 year:2003 number:4 pages:601-609 https://doaj.org/article/0fe1f5787ac04f58b9f147aacb139160 kostenfrei http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532003000400017 kostenfrei https://doaj.org/toc/0103-5053 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 14 2003 4 601-609
allfieldsSound	(DE-627)DOAJ05746443X (DE-599)DOAJ0fe1f5787ac04f58b9f147aacb139160 DE-627 ger DE-627 rakwb eng QD1-999 Colle Vinicius D. verfasserin aut Spontaneous deposition of Ru on Pt (100): morphological and electrochemical studies. Preliminary results of ethanol oxidation at Pt(100)/Ru 2003 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier In the present work ruthenium was deposited in submonolayer amounts on Pt(100) by spontaneous deposition at several deposition times. The Pt (100)/Ru surfaces were analyzed using ex-situ STM to image the deposits characteristic of ruthenium on Pt (100). It was observed the formation of ruthenium islands with diameters between 1.0 and 4.5 nm with bi-atomic thickness in the center of the islands. A homogeneous distribution of the ruthenium islands on the platinum terraces was found, with no preferential deposition on steps or surface defect sites. The ruthenium coverage degree had been calculated by the decrease of charge of the hydrogen adsorption-desorption peaks in the cyclic voltammograms of the Pt(100)/Ru electrodes. The Pt(100)/Ru electrodes with a ruthenium coverage degree of ca. 0.3 showed a high activity for the ethanol electrooxidation. The electrochemical experimental results support strongly the bifunctional mechanism for the enhanced ethanol oxidation. STM cyclic voltammetry Pt(100)/Ru ethanol oxidation Chemistry Giz M. Janete verfasserin aut Tremiliosi-Filho Germano verfasserin aut In Journal of the Brazilian Chemical Society Sociedade Brasileira de Química, 2017 14(2003), 4, Seite 601-609 (DE-627)32461330X (DE-600)2028738-0 16784790 nnns volume:14 year:2003 number:4 pages:601-609 https://doaj.org/article/0fe1f5787ac04f58b9f147aacb139160 kostenfrei http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532003000400017 kostenfrei https://doaj.org/toc/0103-5053 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 14 2003 4 601-609
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source	In Journal of the Brazilian Chemical Society 14(2003), 4, Seite 601-609 volume:14 year:2003 number:4 pages:601-609
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callnumber-first	Q - Science
author	Colle Vinicius D.
spellingShingle	Colle Vinicius D. misc QD1-999 misc STM misc cyclic voltammetry misc Pt(100)/Ru misc ethanol oxidation misc Chemistry Spontaneous deposition of Ru on Pt (100): morphological and electrochemical studies. Preliminary results of ethanol oxidation at Pt(100)/Ru
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topic_title	QD1-999 Spontaneous deposition of Ru on Pt (100): morphological and electrochemical studies. Preliminary results of ethanol oxidation at Pt(100)/Ru STM cyclic voltammetry Pt(100)/Ru ethanol oxidation
topic	misc QD1-999 misc STM misc cyclic voltammetry misc Pt(100)/Ru misc ethanol oxidation misc Chemistry
topic_unstemmed	misc QD1-999 misc STM misc cyclic voltammetry misc Pt(100)/Ru misc ethanol oxidation misc Chemistry
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title	Spontaneous deposition of Ru on Pt (100): morphological and electrochemical studies. Preliminary results of ethanol oxidation at Pt(100)/Ru
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title_full	Spontaneous deposition of Ru on Pt (100): morphological and electrochemical studies. Preliminary results of ethanol oxidation at Pt(100)/Ru
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author_browse	Colle Vinicius D. Giz M. Janete Tremiliosi-Filho Germano
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author-letter	Colle Vinicius D.
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title_sort	spontaneous deposition of ru on pt (100): morphological and electrochemical studies. preliminary results of ethanol oxidation at pt(100)/ru
callnumber	QD1-999
title_auth	Spontaneous deposition of Ru on Pt (100): morphological and electrochemical studies. Preliminary results of ethanol oxidation at Pt(100)/Ru
abstract	In the present work ruthenium was deposited in submonolayer amounts on Pt(100) by spontaneous deposition at several deposition times. The Pt (100)/Ru surfaces were analyzed using ex-situ STM to image the deposits characteristic of ruthenium on Pt (100). It was observed the formation of ruthenium islands with diameters between 1.0 and 4.5 nm with bi-atomic thickness in the center of the islands. A homogeneous distribution of the ruthenium islands on the platinum terraces was found, with no preferential deposition on steps or surface defect sites. The ruthenium coverage degree had been calculated by the decrease of charge of the hydrogen adsorption-desorption peaks in the cyclic voltammograms of the Pt(100)/Ru electrodes. The Pt(100)/Ru electrodes with a ruthenium coverage degree of ca. 0.3 showed a high activity for the ethanol electrooxidation. The electrochemical experimental results support strongly the bifunctional mechanism for the enhanced ethanol oxidation.
abstractGer	In the present work ruthenium was deposited in submonolayer amounts on Pt(100) by spontaneous deposition at several deposition times. The Pt (100)/Ru surfaces were analyzed using ex-situ STM to image the deposits characteristic of ruthenium on Pt (100). It was observed the formation of ruthenium islands with diameters between 1.0 and 4.5 nm with bi-atomic thickness in the center of the islands. A homogeneous distribution of the ruthenium islands on the platinum terraces was found, with no preferential deposition on steps or surface defect sites. The ruthenium coverage degree had been calculated by the decrease of charge of the hydrogen adsorption-desorption peaks in the cyclic voltammograms of the Pt(100)/Ru electrodes. The Pt(100)/Ru electrodes with a ruthenium coverage degree of ca. 0.3 showed a high activity for the ethanol electrooxidation. The electrochemical experimental results support strongly the bifunctional mechanism for the enhanced ethanol oxidation.
abstract_unstemmed	In the present work ruthenium was deposited in submonolayer amounts on Pt(100) by spontaneous deposition at several deposition times. The Pt (100)/Ru surfaces were analyzed using ex-situ STM to image the deposits characteristic of ruthenium on Pt (100). It was observed the formation of ruthenium islands with diameters between 1.0 and 4.5 nm with bi-atomic thickness in the center of the islands. A homogeneous distribution of the ruthenium islands on the platinum terraces was found, with no preferential deposition on steps or surface defect sites. The ruthenium coverage degree had been calculated by the decrease of charge of the hydrogen adsorption-desorption peaks in the cyclic voltammograms of the Pt(100)/Ru electrodes. The Pt(100)/Ru electrodes with a ruthenium coverage degree of ca. 0.3 showed a high activity for the ethanol electrooxidation. The electrochemical experimental results support strongly the bifunctional mechanism for the enhanced ethanol oxidation.
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title_short	Spontaneous deposition of Ru on Pt (100): morphological and electrochemical studies. Preliminary results of ethanol oxidation at Pt(100)/Ru
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