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Jujie Ren,Miao Zhai,Min Cui,Liujia Li,Congcong Yu,Xudong Yu,Xueping Ji 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2017 NANO Vol.12 No.1
A superoxide anion radical (O2 ˙-) nonenzymatic electrochemical sensor based on PtRuCu ternary alloy nanoparticles/electrochemically reduced graphene oxide (ERGO) composite modified glassy carbon electrode (PtRuCu/ERGO/GCE) was developed. ERGO and PtRuCu/ERGO composites were characterized by scanning electron microscopy. The prepared PtRuCu/ERGO/ GCE showed remarkable performance toward the electrocatalytic reduction of (O2 ˙-). The sensor possessed a high sensitivity of 1725µA · mM-1 · cm-2, a wide linear range of 7.5–330 µM (R2 = 0.993) and a low detection limit of 0.7 µM (S/N = 3), as well as excellent selectivity, reproducibility and stability, which can be attributed to the synergistic effect of ERGO and PtRuCu ternary alloy nanoparticles. Therefore, the prepared sensor is promising for electrochemical determination of O2˙-.