Electrochemical Oxidation of Phenol Using Boron-Doped Diamond Electrodes
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2015-02-18 |
| Journal | ECS Transactions |
| Authors | Carlos M. Hangarter, William E. OāGrady, Brian R. Stoner, Paul M. Natishan |
| Institutions | United States Naval Research Laboratory, RTI International |
| Citations | 4 |
Abstract
Section titled āAbstractāThe oxidation of phenol is compared for two different boron doped diamond (BDD) electrodes; a niobium supported BDD planar electrode and a BDD coated Ti mesh. Raman spectroscopy and cyclic voltammetry were used to compare the two electrodes. Continuous oxidation of phenol utilized a flow cell configuration that circulated a fixed volume of solution, scaled to the electrode area, with an initial concentration of 10 mM phenol in 0.1M H2SO4. The conversion of phenol to CO 2 was monitored by scheduled collection of aliquots and subsequent total organic carbon (TOC) analysis. The two electrodes were found to have similar conversion rates, with the total carbon decreasing from ~1% to <0.1%. Treatment of a more concentrated solution, 87 mM phenol in 0.1M H 2 SO 4 , was examined for the planar electrode and resulted in greater efficiency, which was attributed to greater localization between reactants and hydroxyl radicals in the kinetic limited regime.