Investigating the Thermodynamic Causes Behind the Anomalously Large Shifts in pK(a) Values of Benzoic Acid-Modified Graphite and Glassy Carbon Surfaces
The difference between the values of 4-carboxyphenyl groups, covalently attached to either graphite (BAcarbon) or glassy carbon (BA-GC) surfaces, and benzoic acid in solution is explored using potentiometric titration and cyclic voltammetry. In solution, benzoic acid has a pKa of 4.20 at 25 °C. Howe...
| Main Authors: | , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
American Chemical Society
2009
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