Open AccessSynthesis of Fe3O4/Graphene oxide/Pristine graphene Composite and Its Application in Electrochemical Sensor
Author(s) -
Linlin Cai,
Yangyang Shang,
Xiaoqing Jiang
Publication year - 2020
Publication title -
journal of physics: conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
ISSN - 1742-6588
DOI - 10.1088/1742-6596/1622/1/012096
Subject(s) - graphene , materials science , graphite oxide , x ray photoelectron spectroscopy , composite number , ternary operation , oxide , electrochemistry , scanning electron microscope , graphite , graphene oxide paper , chemical engineering , electrochemical gas sensor , nanotechnology , analytical chemistry (journal) , composite material , electrode , chemistry , metallurgy , organic chemistry , computer science , engineering , programming language
In this work, a Fe 3 O 4 /graphene oxide (GO)/pristine graphene (PG) ternary composite was synthesized successfully by a two-step method: first graphite was added into GO dispersion to get the GO/PG composite, followed by loading Fe 3 O 4 nanoparticles via a co-precipitation method. The structure of Fe 3 O 4 /GO/PG was characterized by scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). Compared with the Fe 3 O 4 /GO binary composite, Fe 3 O 4 /GO/PG composite shows more excellent properties. An electrochemical sensor fabricated with Fe 3 O 4 /GO/PG was used to detect dopamine (DA). The linear detection ranges of DA is 5-50 μM with detection limits of 3.37 μM.