Figure 2.

(A) Current-time curves of 2 GOx-modified np-Au samples with pore size of 30 nm for successive addition of 1 mM glucose in 0.1 M PBS at −0.2 V. (B) Chronoamperometry curves and (C) calibration curves of np-Au with different pore sizes in 0.1 M PBS and KCl solution with successive addition of 1 mM glucose at potential of −0.2 V. (D) Chronoamperometry curve of np-Au with pore size of 30 nm in 0.1 M PBS and KCl solution with successive addition of 0.02 mM UA, 0.1 mM AA, and 1 mM glucose. AA indicates ascorbic acid; GOx, glucose oxidase; NPG, nanoporous gold; PBS, phosphate-buffered saline; UA, uric acid.

Reproduced with permission from Chen et al,⁹ copyright Elsevier.