Table 1.

Sensitivities and limits of detection (LoDs) of SPCE, Ag_X@SPCEs, Pt_X@SPCE, and AgPt_X@SPCEs. Sensitivities were normalised considering the calculated $A_e$ in Table S2 (Supplementary Material). LoDs were calculated as 3 x intercept error/slope of the corresponding linear fit.

Electrode	Sensitivity (nA µM−1 cm−2)	LoD (µM)
SPCE (@ −0.3 V)	0.015 ± 0.001	1279
AgS@SPCE	0.215 ± 0.006	600
AgL@SPCE	0.125 ± 0.004	807
SPCE (@ 0.7 V)	11.9 ± 0.5	4.14
PtS@SPCE	397 ± 2	0.42
PtL@SPCE	329 ± 1	0.38
AgPtS@SPCE (1 h)	137 ± 1	0.55
AgPtL@SPCE (1 h)	100.0 ± 0.4	0.42
AgPtS@SPCE (2.5 h)	122.9 ± 0.4	0.34
AgPtL@SPCE (2.5 h)	121.1 ± 0.6	0.49