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Electrochemical oxidation of oxalic acid at highly boron-doped diamond electrodes.
Anal Chem. 2006 May 15; 78(10):3467-71.AC

Abstract

Electrochemical oxidation of oxalic acid has been investigated at bare, highly boron-doped diamond electrodes. Cyclic voltammetry and flow injection analysis with amperometric detection were used to study the electrochemical reaction. Hydrogen-terminated diamonds exhibited well-defined peaks of oxalic acid oxidation in a wide pH range. A good linear response was observed for a concentration range from 50 nM to 10 microM, with an estimated detection limit of approximately 0.5 nM (S/N = 3). In contrast, oxygen-terminated diamonds showed no response for oxalic acid oxidation inside the potential window, indicating that surface termination contributed highly to the control of the oxidation reaction. An investigation with glassy carbon electrodes was conducted to confirm the surface termination effect on oxalic acid oxidation. Although a hydrogen-terminated glassy carbon electrode showed an enhancement of signal-to-background ratio in comparison with untreated glassy carbon, less stability of the current responses was observed than that at hydrogen-terminated diamond.

Authors+Show Affiliations

Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Yokohama 223-8522, Japan.No 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

16689551

Citation

Ivandini, Tribidasari A., et al. "Electrochemical Oxidation of Oxalic Acid at Highly Boron-doped Diamond Electrodes." Analytical Chemistry, vol. 78, no. 10, 2006, pp. 3467-71.
Ivandini TA, Rao TN, Fujishima A, et al. Electrochemical oxidation of oxalic acid at highly boron-doped diamond electrodes. Anal Chem. 2006;78(10):3467-71.
Ivandini, T. A., Rao, T. N., Fujishima, A., & Einaga, Y. (2006). Electrochemical oxidation of oxalic acid at highly boron-doped diamond electrodes. Analytical Chemistry, 78(10), 3467-71.
Ivandini TA, et al. Electrochemical Oxidation of Oxalic Acid at Highly Boron-doped Diamond Electrodes. Anal Chem. 2006 May 15;78(10):3467-71. PubMed PMID: 16689551.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Electrochemical oxidation of oxalic acid at highly boron-doped diamond electrodes. AU - Ivandini,Tribidasari A, AU - Rao,Tata N, AU - Fujishima,Akira, AU - Einaga,Yasuaki, PY - 2006/5/13/pubmed PY - 2007/5/11/medline PY - 2006/5/13/entrez SP - 3467 EP - 71 JF - Analytical chemistry JO - Anal Chem VL - 78 IS - 10 N2 - Electrochemical oxidation of oxalic acid has been investigated at bare, highly boron-doped diamond electrodes. Cyclic voltammetry and flow injection analysis with amperometric detection were used to study the electrochemical reaction. Hydrogen-terminated diamonds exhibited well-defined peaks of oxalic acid oxidation in a wide pH range. A good linear response was observed for a concentration range from 50 nM to 10 microM, with an estimated detection limit of approximately 0.5 nM (S/N = 3). In contrast, oxygen-terminated diamonds showed no response for oxalic acid oxidation inside the potential window, indicating that surface termination contributed highly to the control of the oxidation reaction. An investigation with glassy carbon electrodes was conducted to confirm the surface termination effect on oxalic acid oxidation. Although a hydrogen-terminated glassy carbon electrode showed an enhancement of signal-to-background ratio in comparison with untreated glassy carbon, less stability of the current responses was observed than that at hydrogen-terminated diamond. SN - 0003-2700 UR - https://www.unboundmedicine.com/medline/citation/16689551/Electrochemical_oxidation_of_oxalic_acid_at_highly_boron_doped_diamond_electrodes_ L2 - https://doi.org/10.1021/ac052029x DB - PRIME DP - Unbound Medicine ER -