| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 183212 | Electrochimica Acta | 2016 | 6 Pages |
•GHB oxidation use platinum hydroxide species acting as catalysis intermediates.•GHB SERS spectroelectrochemistry has been performed for the first time.•Spectro-electrochemistry proves that succinic acid plays a role in GHB oxidation.•Electro-oxidation of 1-butanol produced butyric acid predominantly.•SERS Spectro-electrochemistry for derivatives of GHB presented for the first time.
The electrochemical behaviour of gamma-hydroxybutyric acid (GHB), the cyclic lactone derivative (GBL), 1-butanol, butyric acid and succinic acid on a platinum electrode in acidic medium has been studied by means of Raman spectro-electrochemistry using the SERS effect. Only GHB and 1-butanol were found to be electroactive substances that can form the acid product mainly and other species in minor proportion through the electro-catalytic oxidation reaction of alcohol group. The interaction of all these molecules with the platinum and platinum oxides, generated during the electrodic process has been investigated in a wide interval of potentials. Succinic acid was found to play the role of both intermediate (to produce the conjugate derivative) and product in GHB electrocatalytic oxidation. Likewise, the electro-oxidation of 1-butanol produced butyric acid predominantly. The carbon (CH2) and the ring skeletons presented a predominant interaction with the platinum oxide surface for 1-butanol and GBL, respectively.
