Indexed by:Journal Papers

Date of Publication:2019-07-01

Journal:ELECTROANALYSIS

Included Journals:SCIE

Volume:31

Issue:7,SI

Page Number:1334-1341

ISSN No.:1040-0397

Key Words:PI films; LIG; non-enzymatic; H2O2 sensor

Abstract:In this study, a laser-induced graphene (LIG) loaded platinum nanoparticles (PtNPs) was prepared for precise, rapid and non-enzymatic electrochemical detection of hydrogen peroxide (H2O2). The commercial PI films were used as the substrate of LIG. In order to improve the electrochemical performance of LIG, a layer of PtNPs catalyst was fabricated through a magnetron sputtering process on the surface of LIG (PtLIG). Under optimized conditions, a linear relationship between H2O2 reduction current and H2O2 concentration was recorded, the correlation coefficient R-2 is 0.9919 with the detection limit of 0.1 mu M (S/N=3) and the sensitivity of 248.4 mu A mM(-1)cm(-2). Moreover, the PtLIG exhibits excellent selectivity, reproducibility and repeatability. Because of these remarkable advantages, we believe that PtLIG will provide a wider range of applications in biosensors and bioelectronic devices.