Electrochemical growth of hydrous iridium (III) and (IV) oxide on platinum susbtrate
It is proposed a novel procedure for the electrochemical growth of iridium (III) and (IV) oxides on platinum substrate from iridium chloride saturated solution at pH 1. Iridium oxides (green and colorless) were obtained with this new technique by cyclic voltammetry in the saturated solution of iridi...
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| Format: | Article |
| Language: | English |
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Universidad del Zulia
2010-10-01
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| Series: | Revista Técnica de la Facultad de Ingeniería |
| Subjects: | |
| Online Access: | https://www.produccioncientificaluz.org/index.php/tecnica/article/view/6255 |
| _version_ | 1811178677050802176 |
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| author | María Eliana Méndez Jairo Márquez Richard Briceño |
| author_facet | María Eliana Méndez Jairo Márquez Richard Briceño |
| author_sort | María Eliana Méndez |
| collection | DOAJ |
| description | It is proposed a novel procedure for the electrochemical growth of iridium (III) and (IV) oxides on platinum substrate from iridium chloride saturated solution at pH 1. Iridium oxides (green and colorless) were obtained with this new technique by cyclic voltammetry in the saturated solution of iridium previously electrodeposited on platinum at constant potential. Unlike other techniques here, the coating fraction (μm2 oxide/ μm2 surface) is measure using a metallic microscope coupled with an image analyzer. The evolution of experimental coating fraction values with time suggested the existence of a progressive nucleation mechanism. Iridium oxides are slowly deposited in a layer by layer mode. The time and coating fraction were correlated to estimate the optimal time for metallic iridium deposition as well as the optimal time for iridium oxidation. This values were 5000 s and 50 cycles (40 mV/s between ”“250 mV and 1450 mV), respectively. The electrocatalytic activity on the oxygen reduction was observed during the iridium oxidation process. Future studies must be focused on proving this property.
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| first_indexed | 2024-04-11T06:22:20Z |
| format | Article |
| id | doaj.art-e59e84d7171644648ec0383bfb2a8090 |
| institution | Directory Open Access Journal |
| issn | 0254-0770 2477-9377 |
| language | English |
| last_indexed | 2024-04-11T06:22:20Z |
| publishDate | 2010-10-01 |
| publisher | Universidad del Zulia |
| record_format | Article |
| series | Revista Técnica de la Facultad de Ingeniería |
| spelling | doaj.art-e59e84d7171644648ec0383bfb2a80902022-12-22T04:40:31ZengUniversidad del ZuliaRevista Técnica de la Facultad de Ingeniería0254-07702477-93772010-10-01311Electrochemical growth of hydrous iridium (III) and (IV) oxide on platinum susbtrateMaría Eliana Méndez0Jairo Márquez1Richard Briceño2Universidad de los Andes-VenezuelaUniversidad de los Andes-VenezuelaUniversidad de los Andes-VenezuelaIt is proposed a novel procedure for the electrochemical growth of iridium (III) and (IV) oxides on platinum substrate from iridium chloride saturated solution at pH 1. Iridium oxides (green and colorless) were obtained with this new technique by cyclic voltammetry in the saturated solution of iridium previously electrodeposited on platinum at constant potential. Unlike other techniques here, the coating fraction (μm2 oxide/ μm2 surface) is measure using a metallic microscope coupled with an image analyzer. The evolution of experimental coating fraction values with time suggested the existence of a progressive nucleation mechanism. Iridium oxides are slowly deposited in a layer by layer mode. The time and coating fraction were correlated to estimate the optimal time for metallic iridium deposition as well as the optimal time for iridium oxidation. This values were 5000 s and 50 cycles (40 mV/s between ”“250 mV and 1450 mV), respectively. The electrocatalytic activity on the oxygen reduction was observed during the iridium oxidation process. Future studies must be focused on proving this property. https://www.produccioncientificaluz.org/index.php/tecnica/article/view/6255iridium electrodeposits on platinumhydrated iridium oxideselectrochemical growth of iridium |
| spellingShingle | María Eliana Méndez Jairo Márquez Richard Briceño Electrochemical growth of hydrous iridium (III) and (IV) oxide on platinum susbtrate Revista Técnica de la Facultad de Ingeniería iridium electrodeposits on platinum hydrated iridium oxides electrochemical growth of iridium |
| title | Electrochemical growth of hydrous iridium (III) and (IV) oxide on platinum susbtrate |
| title_full | Electrochemical growth of hydrous iridium (III) and (IV) oxide on platinum susbtrate |
| title_fullStr | Electrochemical growth of hydrous iridium (III) and (IV) oxide on platinum susbtrate |
| title_full_unstemmed | Electrochemical growth of hydrous iridium (III) and (IV) oxide on platinum susbtrate |
| title_short | Electrochemical growth of hydrous iridium (III) and (IV) oxide on platinum susbtrate |
| title_sort | electrochemical growth of hydrous iridium iii and iv oxide on platinum susbtrate |
| topic | iridium electrodeposits on platinum hydrated iridium oxides electrochemical growth of iridium |
| url | https://www.produccioncientificaluz.org/index.php/tecnica/article/view/6255 |
| work_keys_str_mv | AT mariaelianamendez electrochemicalgrowthofhydrousiridiumiiiandivoxideonplatinumsusbtrate AT jairomarquez electrochemicalgrowthofhydrousiridiumiiiandivoxideonplatinumsusbtrate AT richardbriceno electrochemicalgrowthofhydrousiridiumiiiandivoxideonplatinumsusbtrate |