Table 2.

parameters used for the linear fit of the calibration curves reported in Figure 7.

Sample	$\mathbf{y}=\mathbf{a}+\mathbf{b}\mathbf{x}$		Adj R2
	a (μAcm−2)	b (μAcm−2mM−1)
Nano-porous	95.49 ± 4.25	55.69 ± 0.89	0.9992
8 nm 300 °C	9.48 ± 1.65	32.74 ± 0.36	0.9996
17 nm 400 °C	17.54 ± 2.58	27.29 ± 0.58	0.9986
Laser	30.60 ± 6.45	15.38 ± 1.24	0.9807