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Investigation of electro-oxidation of methanol and benzyl alcohol at boron-doped diamond electrode: evidence for the mechanism for fouling film formation.
J Phys Chem B. 2006 Oct 05; 110(39):19426-32.JP

Abstract

Boron-doped diamond (BDD) and glassy carbon (GC) electrodes are compared for electrochemical oxidation of methanol and benzyl alcohol. Cyclic voltammograms reveal that BDD electrode produces good oxidation signals for both methanol and benzyl alcohol, while GC produces no significant oxidation signal for either methanol or benzyl alcohol. Amperometric measurement of oxidation of methanol and benzyl alcohol on BDD shows development of a fouling film for benzyl alcohol but not for methanol. Prolonged (24 h) polarization of the BDD electrode at +2.0 V in benzyl alcohol generated enough fouling film for investigation by AFM, SEM, Raman, and FTIR techniques. AFM and SEM microscopy images confirm a fouling film confined to the low-lying regions of the polycrystallite BDD surface, indicating that the active sites of benzyl alcohol oxidation are located within these low-lying regions. The fouling material generated in the process of benzyl alcohol oxidation was identified from Raman and FTIR spectroscopy as polyester. Experiments confirm the fouling film can be removed and the electrode surface reactivated by brief polarization at +3.0 V. Amperometric results of concentration dependence confirm the BDD electrode is well suited for quantitative analysis applications of methanol and benzyl alcohol, with recognizable oxidation currents at micromolar concentration levels.

Authors+Show Affiliations

Department of Environment and Energy and Department of Nature Science Education, National University of Tainan, Tainan, Taiwan 701. ccchang@mail.nutn.edu.twNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

17004801

Citation

Chang, Chia-Chin, et al. "Investigation of Electro-oxidation of Methanol and Benzyl Alcohol at Boron-doped Diamond Electrode: Evidence for the Mechanism for Fouling Film Formation." The Journal of Physical Chemistry. B, vol. 110, no. 39, 2006, pp. 19426-32.
Chang CC, Chen LC, Liu SJ, et al. Investigation of electro-oxidation of methanol and benzyl alcohol at boron-doped diamond electrode: evidence for the mechanism for fouling film formation. J Phys Chem B. 2006;110(39):19426-32.
Chang, C. C., Chen, L. C., Liu, S. J., & Chang, H. C. (2006). Investigation of electro-oxidation of methanol and benzyl alcohol at boron-doped diamond electrode: evidence for the mechanism for fouling film formation. The Journal of Physical Chemistry. B, 110(39), 19426-32.
Chang CC, et al. Investigation of Electro-oxidation of Methanol and Benzyl Alcohol at Boron-doped Diamond Electrode: Evidence for the Mechanism for Fouling Film Formation. J Phys Chem B. 2006 Oct 5;110(39):19426-32. PubMed PMID: 17004801.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Investigation of electro-oxidation of methanol and benzyl alcohol at boron-doped diamond electrode: evidence for the mechanism for fouling film formation. AU - Chang,Chia-Chin, AU - Chen,Li-Chia, AU - Liu,Shyh-Jiun, AU - Chang,Hsien-Chang, PY - 2006/9/29/pubmed PY - 2007/8/19/medline PY - 2006/9/29/entrez SP - 19426 EP - 32 JF - The journal of physical chemistry. B JO - J Phys Chem B VL - 110 IS - 39 N2 - Boron-doped diamond (BDD) and glassy carbon (GC) electrodes are compared for electrochemical oxidation of methanol and benzyl alcohol. Cyclic voltammograms reveal that BDD electrode produces good oxidation signals for both methanol and benzyl alcohol, while GC produces no significant oxidation signal for either methanol or benzyl alcohol. Amperometric measurement of oxidation of methanol and benzyl alcohol on BDD shows development of a fouling film for benzyl alcohol but not for methanol. Prolonged (24 h) polarization of the BDD electrode at +2.0 V in benzyl alcohol generated enough fouling film for investigation by AFM, SEM, Raman, and FTIR techniques. AFM and SEM microscopy images confirm a fouling film confined to the low-lying regions of the polycrystallite BDD surface, indicating that the active sites of benzyl alcohol oxidation are located within these low-lying regions. The fouling material generated in the process of benzyl alcohol oxidation was identified from Raman and FTIR spectroscopy as polyester. Experiments confirm the fouling film can be removed and the electrode surface reactivated by brief polarization at +3.0 V. Amperometric results of concentration dependence confirm the BDD electrode is well suited for quantitative analysis applications of methanol and benzyl alcohol, with recognizable oxidation currents at micromolar concentration levels. SN - 1520-6106 UR - https://www.unboundmedicine.com/medline/citation/17004801/Investigation_of_electro_oxidation_of_methanol_and_benzyl_alcohol_at_boron_doped_diamond_electrode:_evidence_for_the_mechanism_for_fouling_film_formation_ L2 - https://doi.org/10.1021/jp062209q DB - PRIME DP - Unbound Medicine ER -