▎ 摘　　要

Significantly improving the dispersion of platinum nanoparticles (NPs) over the support is critical to boosting their performance in electrocatalysis. Herein, an effective method is reported to synthesise well-dispersed Pt NPs (similar to 3 nm) on defective graphene nanosheets (Pt/dGNs) through a self-regulation reduction method of sodium n-dodecyl sulphate (SDS). The dGNs (dGN(600), dGN(400), and dGN(200)) were rapidly exfoliated and prepared using a sonoelectrochemical method with sonication powers of 600, 400, and 200 W. Consequently, highly dispersed and dense Pt NPs formed on dGN(600) (Pt/dGN(600)) with point vacancy, 5-8-5 defect, and 5-9 vacancy defect were obtained. The Pt/dGN(600) exhibited a significant mass activity (5.80 x 10(20) molecules. g(Pt)(-1)) for the sequential catalysis of neutral D-glucose oxidation reaction (GOR), where the electron transfer number was 1.13, suggesting that the element step to form gluconolactone. Additionally, amperometric sensor studies for transient catalysis clearly showed the potential of Pt/dGN(600) for use as a non-enzymatic glucose sensor.