A novel non-enzymatic glucose sensor based on Pt3Ru1 alloy nanoparticles with high density of surface defects

Biosensors & Bioelectronics
Jiangwei YangWeixing Liu

Abstract

A novel non-enzymatic glucose sensor based on a glassy carbon electrode modified with Pt3Ru1 alloy nanoparticles (Pt3Ru1/GCE) was fabricated. Pt3Ru1 alloy nanoparticles were prepared by a reverse microemulsion method at room temperature. The X-ray diffraction (XRD) and energy dispersive X-ray spectroscopy (EDS) demonstrate that Pt3Ru1 nanoparticles are disordered alloy with face central cubic (fcc) structure and the atom ratio of Pt and Ru is 3:1. The high-resolution transmission electron microscopy (HRTEM) images show that Pt3Ru1 alloy nanoparticles were aggregated with a high density of surface defects. Furthermore, the sensor properties of Pt3Ru1/GCE were investigated by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and chronoamperometry (CA) in 0.01 M PBS (pH 7.4). The results indicate that the proposed sensor exhibits a wide linear range of 5 × 10(-7)M to 10(-2)M (R(2)=0.9988) with a low detection limit of 0.3 μM for glucose. Moreover, the sensor demonstrates good sensitivity, stability, reproducibility, and better anti-interference performance toward ascorbic acid (AA), uric acid (UA), and fructose (Fru).

Citations

Jul 29, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Weiyue ZhaoXun Wang
Mar 14, 2017·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Yiwei LiuXuping Sun
Dec 21, 2016·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Xiaoqin CaoXuping Sun
Feb 7, 2018·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Wenxin ZhuJianlong Wang
Mar 8, 2021·Food and Chemical Toxicology : an International Journal Published for the British Industrial Biological Research Association·Delloula LakhdariNadjem Lakhdari
Aug 24, 2021·ACS Applied Materials & Interfaces·Mohamed Fathi SanadSreeprasad T Sreenivasan

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