Open AccessIon Selective Electrode Mediated by Transfer Layer of Graphene Oxide for Detection of Ca2+ with Highly Sensitivity and Selectivity
Author(s) -
Yuandong Liu,
Liming Zhang,
Jingwen Mo,
Yi Zhou,
Yang Tian
Publication year - 2022
Publication title -
journal of the electrochemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.258
H-Index - 271
eISSN - 1945-7111
pISSN - 0013-4651
DOI - 10.1149/1945-7111/ac4b24
Subject(s) - graphene , electrode , selectivity , microelectrode , electron transfer , ion , oxide , detection limit , chemistry , substrate (aquarium) , layer (electronics) , analytical chemistry (journal) , inorganic chemistry , linear range , materials science , nanotechnology , photochemistry , chromatography , organic chemistry , oceanography , geology , catalysis
A Ca 2+ selective microelectrode was proposed through electrodepositing graphene oxide (GO) on carbon fiber as an efficient ion-electron transfer layer. The gold leaves were further synthesized at GO surface to increase the specific surface area, and provide a substrate for assembly of the specific ligands for Ca 2+ . GO with negatively charges greatly facilitated the electron transfer process from the recognition center to electrode surface, resulting in the apparently enhanced sensitivity towards Ca 2+ . Moreover, the developed ion-selective microelectrode exhibited good selectivity to Ca 2+ , and a good linear range from 10 μ M to 10 mM with a detection limit of 5.91 ± 0.46 μ M.