Detection of Cu²⁺ in Water Based on Histidine-Gold Labeled Multiwalled Carbon Nanotube Electrochemical Sensor

Figure 3

Electrochemical characterization of the modifying process by CV (a) and EIS (b) [resp., (A) bare GCE; (B) after deposited AuNPs; (C) after assembled SH; (D) after modified MWCNT/AuNPs; (E) after modified histidine].

(a)

(b)