Comparative study of γ-hidroxybutiric acid (GHB) and other derivative compounds by spectroelectrochemistry raman (SERS) on platinum surface. (1st March 2016)

• Record Type: Journal Article
• Authors: Jiménez-Pérez, R.; Sevilla, J.M.; Pineda, T.; Blázquez, M.; Gonzalez-Rodriguez, J.
• Is Part Of: Electrochimica acta. Volume 193(2016)
• Page Start: 154
• Page End: 159
• Publication Date: 2016-03-01
• Subjects: spectro-electrochemistry -- GHB -- succinic acid -- 1-butanol -- electrocatalysis -- platinum electrode; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2016.02.041
• Languages: English
• ISSNs: 0013-4686

Abstract

Highlights: 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. Abstract: 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.