A kind of silicon dioxide/polyfurfural modified electrode and its preparation method and application of detecting lead and cadmium ions

A technology of silica and modified electrodes, which is applied in the electrochemical field of composite modified electrodes and their preparation, electrochemical sensors, silica/polyfurfural composite modified electrodes and their preparation, and the detection of lead ions and cadmium ions. It can solve the problems that the detection limit needs to be improved, and achieve the effect of rapid detection of trace and ultra-trace heavy metals, stable performance, and simple construction method
CN109254065BActive Publication Date: 2020-09-29QILU UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
QILU UNIV OF TECH
Publication Date
2020-09-29

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Abstract

The invention discloses a silica / polyfurfural-modified electrode, a preparation method thereof and application of detecting lead and cadmium ions. The modified electrode is prepared by depositing polyfurfural and silica on a glassy carbon electrode surface through cyclic voltammetry. The electrode preparation method of the invention is convenient and highly efficient, the obtained modified electrode has excellent electrocatalytic activity and selectivity on the lead and cadmium ions, simultaneous quantitative detection of the two types of ions can be realized, sensitivity is high, performanceis stable, and the modified electrode has very broad promotion and application prospects.
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Description

technical field

[0001] The invention relates to a composite material modified electrode and a preparation method thereof, in particular to a silicon dioxide / polyfurfural composite material modified electrode and a preparation method thereof, and also to an electrochemical sensor using the modified electrode as a working electrode and using it to detect lead ions The invention relates to an electrochemical method for cadmium ions and belongs to the technical field of lead cadmium ion monitoring. Background technique

[0002] Heavy metal ions widely exist in various water bodies. They have the characteristics of trace toxicity, biomagnification, and difficulty in degradation in organisms. They are obviously harmful to human health. Therefore, research on heavy metal pollution control has become an important topic in environmental protection research. Lead and cadmium ions are one of the main sources of heavy metal pollution, which are extremely harmful to the environment and h...

Claims

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