Nanointerfaces of expanded graphite and Fe2O3 nanomaterials for electrochemical monitoring of multiple organic pollutants

Organic pollutants are highly biological toxicity to public health and environments. Their sensitive detection is highly required. Herein, a new electrochemical interface for sensitive and selective minoring of tetrabromobisphenol A (TBBPA), sunset yellow (SY), and tartrazine (Tr) is then developed...

Full description

Saved in:
Bibliographic Details
Published in:Electrochimica acta 2020-01, Vol.329, p.135118, Article 135118
Main Authors: Chen, Xinyue, Zhang, Yuanyuan, Li, Chunya, Li, Chi, Zeng, Ting, Wan, Qijin, Li, Yawei, Ke, Qiang, Yang, Nianjun
Format: Article
Language:English
Subjects:
Coated electrodes
Electrochemical sensors
Electron transfer
Environmental monitoring
Fe2O3 nanomaterials
Graphite
Morphology
Morphology dependent
Nanocomposites
Nanomaterials
Nanorods
Organic pollutants
Pollutants
Pollution monitoring
Public health
Structural hierarchy
Sunset
Synthesis
Tetrabromobisphenol A
Three dimensional flow
Toxicity
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Organic pollutants are highly biological toxicity to public health and environments. Their sensitive detection is highly required. Herein, a new electrochemical interface for sensitive and selective minoring of tetrabromobisphenol A (TBBPA), sunset yellow (SY), and tartrazine (Tr) is then developed with the composite of Fe2O3 nanomaterials and expanded graphite (EG) as the sensing materials. Three Fe2O3 nanomaterials, synthesized via a hydrothermal method, feature the morphologies of nanoplate, nanorod, and a three-dimensional flower-like (f-Fe2O3) structure. Electrochemical activity of these nanocomposites is found to be dependent on the morphology of synthesized Fe2O3 nanomaterials. The composite of f-Fe2O3/EG displays the biggest electrochemical active area and the lowest electron transfer resistance towards redox probes, due to a 3D porous hierarchical structure of f-Fe2O3 and a high conductivity of EG. The best sensing performance of three pollutants was thus achieved on this composite coated electrode with a limit of detection of 1.23, 0.89 and 2.17 nM for TBBPA, SY, and Tr, respectively. [Display omitted] •Facile synthesis of nanoplate, nanorod, and three-dimensional flower-like Fe2O3 structures.•Morphology-dependent electrochemistry of Fe2O3 nano-structures.•Sensitive and selective monitoring of different environmental pollutants.
ISSN:0013-4686
1873-3859
DOI:10.1016/j.electacta.2019.135118