Year: 2025
Type: article
Abstract: In this paper, composite nanostructures are constructed successfully by combining conductive carbon-based materials with MoS₂.The MoS₂/ reduced Graphene Oxide (rGO) composite was synthesized by hydrothermal method, and its morphology, elemental composition and microstructure were characterized in detail.Then, the MoS₂/rGO composite material was modified on the glass carbon electrode (GCE) to construct the methyl parathion (MP) electrochemical sensor.The experimental results show that compared with a single MoS₂/GCE modified electrode, the MoS₂/rGO modified electrode exhibits significantly improved electrochemical performance.This boost can be attributed to the rGO's high electrical conductivity and its good interface combination with MoS₂, which work together to facilitate electron transport and enhance catalytic activity.In the electrochemical detection of MP, the MoS₂/rGO modified electrode shows excellent sensitivity, and its detection limit of MP reaches 11.92 ng/mL, providing an effective solution for the detection of MP with high sensitivity. Key words:molybdenum disulfide；graphene oxide；methyl parathion；glassy carbon electrode 1.IntroductionMethyl parathion 1-2 (MP) is a widely used organophosphorus insecticide with high toxicity.It is often used in agricultural products for food preservation and pest control.Due to its harm to the environment, it is usually limited in use.Parathion methyl can enter water through farmland runoff, causing toxicity to aquatic organisms such as fish and amphibians, and threatening biodiversity [3][4][5] .The accumulation in soil may affect the activity and health of soil microorganisms, and thus affect soil fertility and plant growth [6][7][8][9] .In addition, methyl parathion may accumulate in ecosystems through the food chain, with chronic effects on top predators such as birds and mammals 10 .In view of its potential harm to humans and the environment, the monitoring of methyl parathion is particularly important [11][12] .At present, the monitoring technology includes chromatography, spectrum technology and sensor technology.Although the traditional detection method has excellent performance in precision and detail, it has obvious shortcomings in some aspects [13][14][15] .Traditional methods often take longer to test, are more expensive, and rely on expensive equipment and specialized technicians.In addition, they are complex to operate, require specialized training, and often require a fixed laboratory
Source: Electrochemistry
Authors: Chong TAN, Yuan QI, Yuhong YIN, Junsheng LI, Jinlong ZUO
Institution: Harbin University of Commerce
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,130
OpenAlex ID: W4409490922