An Overview of Pesticide Monitoring at Environmental Samples Using Carbon Nanotubes-Based Electrochemical Sensors

Ademar Wong,Fábio Caetano,Tiago Silva,Márcio Bergamini,Luiz Marcolino-Junior,Bruno Janegitz,Orlando Fatibello-Filho

doi:10.3390/c3010008

Abstract

Carbon nanotubes have received enormous attention in the development of electrochemical sensors by promoting electron transfer reactions, decreasing the work overpotential within great surface areas. The growing concerns about environmental health emphasized the necessity of continuous monitoring of pollutants. Pesticides have been successfully used to control agricultural and public health pests; however, intense use can cause a number of damages for biodiversity and human health. In this sense, carbon nanotubes-based electrochemical sensors have been proposed for pesticide monitoring combining different electrode modification strategies and electroanalytical techniques. In this paper, we provide a review of the recent advances in the use of carbon nanotubes for the construction of electrochemical sensors dedicated to the environmental monitoring of pesticides. Future directions, perspectives, and challenges are also commented.

Highlights

The credit for the discovery of carbon nanotubes (CNTs) should be given to Radushkevich and Lukyanovich in 1952 [1]
In the course of this review, we will present an overview of the recent advances in the preparation of electrochemical sensors based on carbon nanotubes for the determination of pesticides in environmental samples
A peak current increase of fifteen times was obtained from the Glassy carbon electrode (GCE) modification with FMWCNTs

Summary

Introduction

The credit for the discovery of carbon nanotubes (CNTs) should be given to Radushkevich and Lukyanovich in 1952 [1]. The presence of structural defects and edge planes are responsible for improvements in sensitivity and the electrocatalytic effects of CNTs on sensing applications [33,34]. Tested the O2 -plasma oxidized multi-walled carbon nanotubes (poMWCNTs) for Cd(II) and Pb(II). Electrochemical detection and found that the current increased by four times in comparison with non-treated-MWCNTs. electrochemical detection and found that the current increased by four times in comparison with non-treated-MWCNTs The authors attribute such improvement to oxygen-containing groups and structural defects on the carbon meshwork produced by plasma MWCNTs functionalization. In the course of this review, we will present an overview of the recent advances in the preparation of electrochemical sensors based on carbon nanotubes for the determination of pesticides in environmental samples

Environmental Relevance of Pesticides Monitoring

Carbon Nanotubes Sensors

Molecularly

PMT on different

Findings

Fullerene