3D Prussian blue/Pt decorated carbon nanofibers based screen-printed microchips for the ultrasensitive hydroquinone biosensing  

作　　者：Tao Liu Ying Xie Lei Shi Yu Liu Zhenyu Chu Wanqin Jin 

机构地区：[1]State Key Laboratory of Materials-Oriented Chemical Engineering,College of Chemical Engineering,Nanjing Tech University,Nanjing 211816,China

出　　处：《Chinese Journal of Chemical Engineering》2021年第9期105-113,共9页中国化学工程学报（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(22078148 and 21727818);the Innovative Research Team Program by the Ministry of Education of China(IRT_17R54);the Top-notch Academic Programs Project of Jiangsu Higher Education Institutions(TAPP);the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD);the Key Project by Medical Science and Technology Development Foundation of Nanjing Department of Health(ZKX17014);the Postgraduate Research&Practice Innovation Program of Jiangsu Province(KYCX20_1021)。

摘　　要：Nowadays,water pollution has become more serious,greatly affecting human life and healthy.Electrochemical biosensor,a novel and rapid detection technique,plays an important role in the realtime and trace detection of water pollutants.However,the stability and sensitivity of electrochemical biosensors remain a great challenge for practical detections in real samples to the strong interferences derived from complex components and coagulation effects.In this work,we reported a novel threedimensional architecture of Prussian blue nanoparticles(PBNPs)/Pt nanoparticles(PtNPs)composite film,using 3 D interweaved carbon nanofibers as a supporting matrix,for the construction of screenprinted microchips-based biosensor.PtNPs with diameters of-2.5 nm was highly dispersed on the carbon nanofibers(CNFs)to build a 3 D skeleton nanostructure through a solvothermal reduction.Subsequently,uniform PBNPs were in-situ self-assembled on this skeleton to construct a 3 D architecture of PB/Pt-CNF composite film.Due to the synergistic effects derived from this special feature,the as-prepared hydroquinone(HQ)biosensor chips can synchronously promote both surface area and conductivity to greatly enhance the electrocatalysis from enzymatic reaction.This biosensor has exhibited a high sensitivity of 220.28μA·L·mmol^(-1)·cm^(-2) with an ultrawide linear range from 2.5μmol·L^(-1) to 1.45 mmol·L^(-1) at a low potential of 0.15 V,as well as the satisfactory reproducibility and usage stability.Besides,its accuracy was also verified in the assays of real water samples.It is highly expected that the 3 D PB/Pt-CNF based screen-printed microchips will have wide applications in dynamic monitoring and early warning of analytes in the various practical fields.

关 键 词：Prussian blue Carbon nanofiber Pt nanoparticle 3D architecture High sensitivity 

分 类 号：TQ342[化学工程—化纤工业] TP212.3[自动化与计算机技术—检测技术与自动化装置]