Highly Sensitive Hydrazine Chemical Sensor Based on CNT-PdPt Nanocomposites

Figure 8

(a) Amperometric response of the CNT-PdPt electrode after successive addition of 12.5 μM hydrazine and 8-fold concentration of different interfering species. Supporting electrolyte: 0.1 M PBS (pH 7.4). Applied potential: 0.2 V. (b) Changes in current (%) of the CNT-PdPt monitored in 0.1 M PBS (pH 7.4) containing 25 μM hydrazine for 15 repetitive measurements during 20 days. The initial response was set as 100%. Error bars are the standard error of the mean ( electrodes).

(a)

(b)