Acta Phys. -Chim. Sin. ›› 1996, Vol. 12 ›› Issue (06): 527-531.doi: 10.3866/PKU.WHXB19960610

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Cyclic Voltammetry and in-situ FTIR Spectroscopic Studies on Electro-oxidation of Formaldehyde at a Gold Electrode

Yang Hui,Lu Tian-Hong,Xue Kuan-Hong,Zhou Yi-Ming,Sun Shi-Gang,Chen Sheng-Pei   

  1. Changchun Institute of Applied Chemistry,Changchun 130022|Department of Chemistry,Nanjing Normal University,Nanjing 210097|Department of Chemistry,Xiamen University,Xiamen 361005
  • Received:1995-08-29 Revised:1996-03-05 Published:1996-06-15
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Abstract:

 The electro-oxidation of formaldehyde on a gold electrode in a gold electrode in a solution containing 0.1mol •L -1 Na2CO3＋0. 1mol•L - 1NaHCO3＋0. 1 mol•L - 1 HCHO was investigated by cyclic voltammetry and in -situ FTIR spetroscopy . The experimental results demonstrated that the oxidation of formaldehyde at different potential range connected with different surface species of gold. At lower potentials, the main product of formaldehyde oxidation was HCOO-, and at higher potentials, the products HCOO- and CO2 were detected simultaneously. From the results, a possible reaction mechanism was proposed.

Key words: Formaldehyde, Gold electrode, Electrocatalytic oxidation, Cyclic voltammetry, In-situ FTIR spectroscopy