科研之友
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摘要
The magnetic gamma-Fe2O3 material was prepared in a new way and characterized by transmission electron microscopy and X-ray diffraction. It was modified on a glass carbon electrode (GCE) coated with gold film to form nano gamma-Fe2O3/Au/GCE. The electrooxidation of hydrazine has been deeply explored with the resulting electrode in 0.1 M phosphate-buffered saline (pH 7.0). The affecting factors containing pH of supporting electrolyte, scan rate, deposition time, amount of gamma-Fe2O3, and possible interferences were investigated, and the oxidation mechanisms of hydrazine on the gamma-Fe2O3/Au/GCE were also explored. The amperometric response to hydrazine is linear in the range of 0.02 to 11 mu M, and the detection limit is 6 nM at a SNR of 3. The prepared sensor exhibited good sensitivity, stability, and lower detection limit for the determination of hydrazine injection.
- 出版日期2013-3
- 单位安徽师范大学
