Platinum nanoparticles decorating a biomass porous carbon nanocomposite-modified electrode for the electrocatalytic sensing of luteolin and application

Juan Liu; Hui Cheng; Hui Xie; Guiling Luo; Yanyan Niu; Shuyao Zhang; Guangjiu Li; Wei Sun

doi:10.1039/c9ra06265c

Platinum nanoparticles decorating a biomass porous carbon nanocomposite-modified electrode for the electrocatalytic sensing of luteolin and application

RSC Adv. 2019 Oct 18;9(58):33607-33616. doi: 10.1039/c9ra06265c.

Authors

Juan Liu¹, Hui Cheng¹, Hui Xie², Guiling Luo², Yanyan Niu², Shuyao Zhang², Guangjiu Li¹, Wei Sun²

Affiliations

¹ Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science of Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology Qingdao 266042 PR China lgjqust@126.com.
² Key Laboratory of Laser Technology and Optoelectronic Functional Materials of Hainan Province, Key Laboratory of Functional Materials and Photoelectrochemistry of Haikou, College of Chemistry and Chemical Engineering, Hainan Normal University Haikou 571158 PR China.

Abstract

A sensitive electrochemical method was proposed for the determination of luteolin based on platinum (Pt) nanoparticles decorating a biomass porous carbon (BPC) composite-modified carbon ionic liquid electrode (CILE). For Pt-BPC/CILE, a pair of well-defined redox peaks of luteolin appeared with enhanced peak currents and the positive movement of peak potentials, proving the electrocatalytic activity of the Pt-BPC nanocomposite for redox reaction. The results can be ascribed to the porous structure of BPC, the catalytic activity of Pt nanoparticles and their synergistic effects. Electrochemical parameters were calculated via cyclic voltammetry and differential pulse voltammetry. The results showed that the oxidation peak currents increased linearly with the concentration of luteolin in the range from 0.008 to 100.0 μmol L^-1, with a detection limit of 2.6 ± 0.054 nmol L^-1. The analytical performance of this sensor was checked by the detection of luteolin contents in a real Duyiwei capsule sample with satisfactory results.