Citation: Chun Cui Huang, Qian Wang, De Bo Xiang, Hui Bo Shao. Surface interrogation mode of scanning electrochemical microscopy for oxidation study of adsorbed CO generated from serine on platinum[J]. Chinese Chemical Letters, ;2011, 22(12): 1481-1484. doi: 10.1016/j.cclet.2011.07.017 shu

Surface interrogation mode of scanning electrochemical microscopy for oxidation study of adsorbed CO generated from serine on platinum

Key Laboratory of Cluster Science, Ministry of Education of China, School of Chemistry, Beijing Institute of Technology, Beijing 100081, China

Received Date: 11 May 2011

Fund Project: This work was supported by the Project of Base for Introducing Talents of Discipline to Universities (111 project), Ministry of Education of China and China State Administration of Foreign Experts Affairs (No.B07012).We greatly appreciate the support of the National Natural Science Foundation of China (No.21173023).

We report a new method for detection and oxidation of adsorbed carbon monoxide (CO_(ads)) generated from serine on a polycrystalline platinum ultramicroelectrode (UME) by bromine (Br₂) using in situ surface interrogation (SI) mode of scanning electrochemical microscopy (SECM). In the SI mode, tip and substrate are both Pt UMEs, and CO_(ads) on Pt substrate, generated from serine, can be oxidized by the tip-generated Br₂ giving a positive response. Dosing CO_(ads) from serine instead of purging CO gas expands the newly introduced reaction of Br₂ with CO_(ads) and further enhances the hope to get rid of CO_(ads) on Pt for fuel cells.
- SECM,
- Surface interrogation mode,
- Adsorbed carbon monoxide,
- Serine,
- Pt ultramicroelectrode
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