Cobalt(II) phthalocyanine bonded to 3-n-propylimidazole immobilized on silica gel surface: preparation and electrochemical properties
Co-Phthalocyanine complex was immobilized on 3-n-propylimidazole groups grafted on a porous SiO2 surface (specific surface area S BET = 500 m² g-1) and efficiently electrocatalyzed the oxalic acid oxidation on a carbon paste electrode surface made of this material. Intermolecular interactions of the...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Química
1999-01-01
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| Series: | Journal of the Brazilian Chemical Society |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50531999000500009 |
| _version_ | 1818490555020083200 |
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| author | Fujiwara Sergio T. Gushikem Yoshitaka |
| author_facet | Fujiwara Sergio T. Gushikem Yoshitaka |
| author_sort | Fujiwara Sergio T. |
| collection | DOAJ |
| description | Co-Phthalocyanine complex was immobilized on 3-n-propylimidazole groups grafted on a porous SiO2 surface (specific surface area S BET = 500 m² g-1) and efficiently electrocatalyzed the oxalic acid oxidation on a carbon paste electrode surface made of this material. Intermolecular interactions of the complex species which can normally interfere in the redox process practically are not observed in the present case because of a low average surface density, delta = 4.7 x 10-13 mol cm-2 (delta = Nf/S BET, where Nf is the amount of adsorbed Co-phtalocyanine per gram of modified silica gel) of the complex species material prepared. The linear response of the electrode to oxalic acid concentration, between 6.5 x 10-4 and 3.2 x 10-3 mol L-1, associated with its high chemical stability makes the covalently immobilized Co-phtalocyanine complex material very attractive in preparing a new class of chemical sensors. |
| first_indexed | 2024-12-10T17:18:36Z |
| format | Article |
| id | doaj.art-16a4ea4e06344f4087b8c7337b698f85 |
| institution | Directory Open Access Journal |
| issn | 0103-5053 |
| language | English |
| last_indexed | 2024-12-10T17:18:36Z |
| publishDate | 1999-01-01 |
| publisher | Sociedade Brasileira de Química |
| record_format | Article |
| series | Journal of the Brazilian Chemical Society |
| spelling | doaj.art-16a4ea4e06344f4087b8c7337b698f852022-12-22T01:40:03ZengSociedade Brasileira de QuímicaJournal of the Brazilian Chemical Society0103-50531999-01-01105389393Cobalt(II) phthalocyanine bonded to 3-n-propylimidazole immobilized on silica gel surface: preparation and electrochemical propertiesFujiwara Sergio T.Gushikem YoshitakaCo-Phthalocyanine complex was immobilized on 3-n-propylimidazole groups grafted on a porous SiO2 surface (specific surface area S BET = 500 m² g-1) and efficiently electrocatalyzed the oxalic acid oxidation on a carbon paste electrode surface made of this material. Intermolecular interactions of the complex species which can normally interfere in the redox process practically are not observed in the present case because of a low average surface density, delta = 4.7 x 10-13 mol cm-2 (delta = Nf/S BET, where Nf is the amount of adsorbed Co-phtalocyanine per gram of modified silica gel) of the complex species material prepared. The linear response of the electrode to oxalic acid concentration, between 6.5 x 10-4 and 3.2 x 10-3 mol L-1, associated with its high chemical stability makes the covalently immobilized Co-phtalocyanine complex material very attractive in preparing a new class of chemical sensors.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50531999000500009cobalt phthalocyaninesilica gel3-n-propylimidazole silica geloxalic acid electroxidationimmobilized cobalt phthalocyanine complex |
| spellingShingle | Fujiwara Sergio T. Gushikem Yoshitaka Cobalt(II) phthalocyanine bonded to 3-n-propylimidazole immobilized on silica gel surface: preparation and electrochemical properties Journal of the Brazilian Chemical Society cobalt phthalocyanine silica gel 3-n-propylimidazole silica gel oxalic acid electroxidation immobilized cobalt phthalocyanine complex |
| title | Cobalt(II) phthalocyanine bonded to 3-n-propylimidazole immobilized on silica gel surface: preparation and electrochemical properties |
| title_full | Cobalt(II) phthalocyanine bonded to 3-n-propylimidazole immobilized on silica gel surface: preparation and electrochemical properties |
| title_fullStr | Cobalt(II) phthalocyanine bonded to 3-n-propylimidazole immobilized on silica gel surface: preparation and electrochemical properties |
| title_full_unstemmed | Cobalt(II) phthalocyanine bonded to 3-n-propylimidazole immobilized on silica gel surface: preparation and electrochemical properties |
| title_short | Cobalt(II) phthalocyanine bonded to 3-n-propylimidazole immobilized on silica gel surface: preparation and electrochemical properties |
| title_sort | cobalt ii phthalocyanine bonded to 3 n propylimidazole immobilized on silica gel surface preparation and electrochemical properties |
| topic | cobalt phthalocyanine silica gel 3-n-propylimidazole silica gel oxalic acid electroxidation immobilized cobalt phthalocyanine complex |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50531999000500009 |
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