A photoelectrochemical sensor for ultrasensitive dopamine detection based on single-layer NanoMoS2 modified gold electrode

A sensitive and simple photoelectrochemical platform with nanoMoS2 modified gold electrode was fabricated. Comparing three kinds of nanoMoS2, single-layer nanoMoS2, multiple-layers nanoMoS2 and small-sized nanoMoS2, it was found that single-layer nanoMoS2 performs best PEC response for dopamine detection. The detection limit was 2.3 × 10−12 M.