Application of an Electrochemical Quartz Crystal Microbalance to the study of electrocatalytic films
- Iowa State Univ., Ames, IA (United States)
The EQCM was used to study the deposition and composition of electrodeposited pure PbO2 and Bi-doped PbO2 active toward anodic oxygen-transfer reactions. Within the doped films, Bi is incorporated as Bi+5 in the form of BiO2A, where A is ClO4- or NO3-. For deposition of these 2 materials, changes in hydration between the Au oxide and the depositing film resulted in higher mass-to-charge ratios. XRD and XPS were used to study the films; the rutile structure of PbO2 is retained even with the Bi doping. The EQCM was also used to study the formation and dissolution of Au oxide and preoxide structures formed on the Au substrate electrodes in acidic media. The preoxide structures were AuOH and increased the surface mass. For the formation of stable Au films on quartz wafers, Ti interlayers between Au and quartz was found to be very effective.
- Research Organization:
- Ames Lab., Ames, IA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-7405-ENG-82
- OSTI ID:
- 10185061
- Report Number(s):
- IS-T-1670; ON: DE93041124
- Resource Relation:
- Other Information: TH: Thesis (Ph.D.); PBD: 1 Sep 1993
- Country of Publication:
- United States
- Language:
- English
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