Journal
ANALYTICAL LETTERS
Volume 56, Issue 4, Pages 643-655Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/00032719.2022.2096626
Keywords
Chemiluminescence; glucose; peroxidase mimetic; platinum; silver nanoparticles (Pt; Ag NPs)
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Bimetallic Pt/Ag nanoparticles were synthesized and demonstrated to possess excellent catalytic performance and stability for use in chemiluminescence sensors.
Bimetallic Pt/Ag nanoparticles (Pt/Ag NPs) were synthesized using 3-hydroxyphenyl-boronic acid as the reducing and stabilizing agent by a simple, one-step hydrothermal method. The bimetallic Pt/Ag NPs were demonstrated to possess intrinsic peroxidase mimetic catalytic activity for the luminol/H2O2 reaction to generate chemiluminescence (CL). The catalytic properties of the bimetallic Pt/Ag NPs were thoroughly investigated. The results showed that the combination of Pt and Ag greatly enhanced the chemiluminescence which is attributed to their synergy. Moreover, the prepared bimetallic Pt/Ag NPs exhibited superior peroxidase mimetic activity to horseradish peroxidase and were stable under a wide range of pH values and temperatures. Using the bimetallic Pt/Ag NPs as the catalyst, a novel chemiluminescence sensor was developed for the determination of glucose with a linear range from 1 to 500 mu M and a detection limit of 0.35 mu M. The developed method was successfully employed to determine glucose in human serum with satisfactory results. Bimetallic Pt/Ag NPs with peroxidase mimetic catalytic activity have promising applications for determination of glucose in clinical samples.
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