Biosensors Incorporating Bimetallic Nanoparticles.
This article presents a review of electrochemical bio-sensing for target analytes based on the use of electrocatalytic bimetallic nanoparticles (NPs), which can improve both the sensitivity and selectivity of biosensors. The review moves quickly from an introduction to the field of bio-sensing, to the importance of biosensors in today's society, the nature of the electrochemical methods employed and the attendant problems encountered. The role of electrocatalysts is introduced with reference to the three generations of biosensors. The contributions made by previous workers using bimetallic constructs, grouped by target analyte, are then examined in detail; following which, the synthesis and characterization of the catalytic particles is examined prior to a summary of the current state of endeavor. Finally, some perspectives for the future of bimetallic NPs in biosensors are given.
NanoElectrochemistry Laboratory, Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan. nouveauvous@yahoo.com.
John
J
Rick
NanoElectrochemistry Laboratory, Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan. snowild0326@gmail.com.
Meng-Che
MC
Tsai
NanoElectrochemistry Laboratory, Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan. bjh@mail.ntust.edu.tw.|National Synchrotron Radiation Research Center, Hsinchu 300, Taiwan. bjh@mail.ntust.edu.tw.
Bing Joe
BJ
Hwang
bimetallic; biosensor; catalytic; electrocatalytic; nanoparticle