Laser Raman Spectroscopy in studies of corrosion and electrocatalysis

Conference · Fri Jan 01 00:00:00 EST 1988

OSTI ID:5485796

Melendres, C A

Laser Raman Spectroscopy (LRS) has become an important tool for the in-situ structural study of electrochemical systems and processes in recent years. Following a brief introduction of the experimental techniques involved in applying LRS to electrochemical systems, we survey the literature for examples of studies in the inhibition of electrode reactions by surface films (e.g., corrosion and passivation phenomena) as well as the acceleration of reactions by electro-sorbates (electrocatalysis). We deal mostly with both normal and resonance Raman effects on fairly thick surface films in contrast to surface-enhanced Raman investigations of monolayer adsorbates, which is covered in another lecture. Laser Raman spectroelectrochemical studies of corrosion and film formation on such metals as Pb, Ag, Fe, Ni, Co, Cr, Au, stainless steel, etc. in various solution conditions are discussed. Further extension of the technique to studies in high-temperature and high-pressure aqueous environments is demonstrated. Results of studies of the structure of corrosion inhibitors are also presented. As applications of the LRS technique in the area of electrocatalysis, we cite studies of the structure of transition metal macrocyclic compounds, i.e., phthalocyanines and porphyrins, used for catalysis of the oxygen reduction reaction. 104 refs., 20 figs.

• Research Organization: Argonne National Lab., IL (USA)
• Sponsoring Organization: DOE/ER
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5485796
• Report Number(s): CONF-880732-3; ON: DE90001414; TRN: 89-026681
• Resource Relation: Conference: Spectroscopic and diffraction techniques in interfacial electrochemistry, Puerto de la Cruz (Spain), 3-15 Jul 1988
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CORROSION PRODUCTS
RAMAN SPECTROSCOPY
METALS
CORROSION
CHROMIUM
COPPER
ELECTROCATALYSTS
GOLD
IRON
LEAD
MERCURY
MOLECULAR STRUCTURE
NICKEL
PASSIVITY
SILVER
STAINLESS STEELS
THIN FILMS
TITANIUM
ALLOYS
CATALYSTS
CHEMICAL REACTIONS
ELEMENTS
FILMS
HIGH ALLOY STEELS
IRON ALLOYS
IRON BASE ALLOYS
LASER SPECTROSCOPY
SPECTROSCOPY
STEELS
TRANSITION ELEMENTS
360105* - Metals & Alloys- Corrosion & Erosion