TY  - JOUR
AU  - Jin, Yan
AU  - Mao, Minmin
AU  - Ge, Yuqing
AU  - Huang, Shanluo
AU  - Ju, Jiaqi
AU  - Jin, Qinghui
AU  - Offenhäusser, Andreas
AU  - Zhao, Jianlong
TI  - Fabrication of surface renewable carbon microelectrode arrays and their application in heavy metal ion sensing
JO  - Analytical methods
VL  - 11
IS  - 9
SN  - 1759-9679
CY  - Cambridge
PB  - RSC Publ.
M1  - FZJ-2019-02449
SP  - 1284 - 1288
PY  - 2019
AB  - In this paper, surface renewable carbon microelectrode arrays (MEAs) were developed using microfabrication technology and were successfully applied in heavy metal ion sensing. The as-prepared carbon microelectrode was fabricated with a cylindrical shape 50 μm in diameter and 300 μm in height. Cyclic voltammetry (CV) analysis with scan rates ranging from 10 mV s−1 to 100 mV s−1 was utilized to characterize the MEAs, and it was found that the typical properties (flat redox peaks) of MEAs appeared at lower scan rates (<30 mV s−1). Heavy metal ions, including Cd2+, Pb2+ and Cu2+ were chosen to demonstrate the performance of the developed MEAs for electrochemical sensor applications, with the detection limit calculated to be 1 μg L−1. Renewability and repeatability experiments were also carried out to demonstrate the good characteristics of the MEAs. This work developed a novel microfabrication technique for low cost surface renewable MEAs that can be used as an electrochemical platform for a wide range of sensor applications.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000459906000016
DO  - DOI:10.1039/C9AY00043G
UR  - https://juser.fz-juelich.de/record/862093
ER  -