Phenol degradation using glassy carbon electrodes modified with particles of Co-Mo alloy
This paper reports on a study aimed to modify the surface of glassy carbon (VC) with Co-Mo nanoparticles and to determine their morphology and composition in order to evaluate their electrocatalytic activity for degrading phenol. The electrochemical deposition of Co-Mo from CoSO4 and Na2MoO4 in two...
| Autores principales: | , , |
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| Formato: | Artículo |
| Lenguaje: | inglés |
| Publicado: |
2013
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| Materias: | |
| Acceso en línea: | http://eprints.uanl.mx/25381/1/25381.pdf |
| _version_ | 1824420193069170688 |
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| author | Orozco, S.I. Blanco Jerez, Leonor María Garza Elizondo, Mario Alberto |
| author_facet | Orozco, S.I. Blanco Jerez, Leonor María Garza Elizondo, Mario Alberto |
| author_sort | Orozco, S.I. |
| collection | Repositorio Institucional |
| description | This paper reports on a study aimed to modify the surface of glassy carbon (VC) with Co-Mo nanoparticles and to determine their morphology and composition in order to evaluate their electrocatalytic activity for degrading phenol. The electrochemical deposition of Co-Mo from CoSO4 and Na2MoO4 in two molar relations (Co:Mo 2.3:1 and 20:1) was analyzed. Experiments were conducted in a conventional three-electrode cell using glassy carbon as the working electrode (WE), Ag/AgCl(s) as the reference electrode (RE) and Pt as the auxiliary electrode (CE). A citrate bath at pH 6 was used as supporting electrolyte. The electrode modification was carried out potentiostatically at –1.1 V vs. Ag/AgCl(s) and galvanostatically at –0.003 A/cm2. The modified electrodes were characterized by XRD, TEM and XPS. Analyses showed that the obtained deposits were a mixture of Co2Mo3 alloy and CoMoO3 oxide. The ability of the electrode modified with Co-Mo particles to degrade phenol was studied. Degradation rate was 95% in 3 hours on a synthetic solution of phenol 30 ppm. UV-Vis spectra of the solutions obtained during electrochemical phenol reduction allowed identifying benzene and cyclohexane as the reaction products. |
| format | Article |
| id | eprints-25381 |
| institution | UANL |
| language | English |
| publishDate | 2013 |
| record_format | eprints |
| spelling | eprints-253812023-05-06T03:48:43Z http://eprints.uanl.mx/25381/ Phenol degradation using glassy carbon electrodes modified with particles of Co-Mo alloy Orozco, S.I. Blanco Jerez, Leonor María Garza Elizondo, Mario Alberto QD Química This paper reports on a study aimed to modify the surface of glassy carbon (VC) with Co-Mo nanoparticles and to determine their morphology and composition in order to evaluate their electrocatalytic activity for degrading phenol. The electrochemical deposition of Co-Mo from CoSO4 and Na2MoO4 in two molar relations (Co:Mo 2.3:1 and 20:1) was analyzed. Experiments were conducted in a conventional three-electrode cell using glassy carbon as the working electrode (WE), Ag/AgCl(s) as the reference electrode (RE) and Pt as the auxiliary electrode (CE). A citrate bath at pH 6 was used as supporting electrolyte. The electrode modification was carried out potentiostatically at –1.1 V vs. Ag/AgCl(s) and galvanostatically at –0.003 A/cm2. The modified electrodes were characterized by XRD, TEM and XPS. Analyses showed that the obtained deposits were a mixture of Co2Mo3 alloy and CoMoO3 oxide. The ability of the electrode modified with Co-Mo particles to degrade phenol was studied. Degradation rate was 95% in 3 hours on a synthetic solution of phenol 30 ppm. UV-Vis spectra of the solutions obtained during electrochemical phenol reduction allowed identifying benzene and cyclohexane as the reaction products. 2013 Article NonPeerReviewed text en cc_by_nc_nd http://eprints.uanl.mx/25381/1/25381.pdf http://eprints.uanl.mx/25381/1.haspreviewThumbnailVersion/25381.pdf Orozco, S.I. y Blanco Jerez, Leonor María y Garza Elizondo, Mario Alberto (2013) Phenol degradation using glassy carbon electrodes modified with particles of Co-Mo alloy. International Journal of Electrochemical Science, 8. pp. 5698-5709. ISSN 14523981 |
| spellingShingle | QD Química Orozco, S.I. Blanco Jerez, Leonor María Garza Elizondo, Mario Alberto Phenol degradation using glassy carbon electrodes modified with particles of Co-Mo alloy |
| thumbnail | https://rediab.uanl.mx/themes/sandal5/images/online.png |
| title | Phenol degradation using glassy carbon electrodes modified with particles of Co-Mo alloy |
| title_full | Phenol degradation using glassy carbon electrodes modified with particles of Co-Mo alloy |
| title_fullStr | Phenol degradation using glassy carbon electrodes modified with particles of Co-Mo alloy |
| title_full_unstemmed | Phenol degradation using glassy carbon electrodes modified with particles of Co-Mo alloy |
| title_short | Phenol degradation using glassy carbon electrodes modified with particles of Co-Mo alloy |
| title_sort | phenol degradation using glassy carbon electrodes modified with particles of co mo alloy |
| topic | QD Química |
| url | http://eprints.uanl.mx/25381/1/25381.pdf |
| work_keys_str_mv | AT orozcosi phenoldegradationusingglassycarbonelectrodesmodifiedwithparticlesofcomoalloy AT blancojerezleonormaria phenoldegradationusingglassycarbonelectrodesmodifiedwithparticlesofcomoalloy AT garzaelizondomarioalberto phenoldegradationusingglassycarbonelectrodesmodifiedwithparticlesofcomoalloy |