A glassy carbon electrode based on Cu-MOF@MnCO3 modification and its preparation method, and an electrochemical sensor.
By using a glassy carbon electrode modified with Cu-MOF@MnCO3 and combining a dual-signal mechanism of mercury ions and Cu2+, the false positive problem in mercury ion detection by electrochemical sensors is solved, and high-sensitivity and interference-resistant mercury ion detection is achieved.
CN119715727BActive Publication Date: 2026-01-13JIANGSU UNIV +1
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Patent Information
- Application Number
- CN202411903142.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2044-12-23
AI Technical Summary
Technical Problem
Electrochemical sensors are prone to false positives when detecting mercury ions, mainly due to their sensitivity to certain interfering substances, leading to erroneous detection results.
Method used
The glassy carbon electrode modified with Cu-MOF@MnCO3 combines the signal generated by mercury ions themselves with the internal reference signal generated when Cu2+ is reduced to Cu+ in Cu-MOF, thus avoiding false positives and improving the anti-interference and reliability of detection.
Benefits of technology
It effectively avoids false positives, improves detection accuracy, and achieves ultrasensitive detection of mercury ions. It has good anti-interference, reliability, and repeatability, and is suitable for the detection of trace amounts of mercury ions.
✦ Generated by Eureka AI based on patent content.
Abstract
The application provides a Cu-MOF@MnCO3 modified glassy carbon electrode and a preparation method thereof and an electrochemical sensor, and the preparation method comprises the following steps: S1, preparing Cu-MOF@MnCO3 powder; S2, polishing, cleaning and drying the surface of a glassy carbon electrode for standby; S3, dissolving the Cu-MOF@MnCO3 powder in DMF, dropwise coating the surface of the glassy carbon electrode treated in the step S2, and heating and drying under an infrared lamp to obtain a Cu-MOF@MnCO3 modified glassy carbon electrode. On the one hand, by combining the signal generated by mercury ions itself and the internal reference signal generated when Cu 2+ and Cu + in the Cu-MOF occur a reduction reaction, the false positive phenomenon is effectively avoided, and the anti-interference, stability and reliability of the electrochemical sensor for detecting mercury ions are improved. On the other hand, the application can further widen the detection range of the electrochemical sensor and reduce the detection limit by amplifying the double signals of MnCO3, and is particularly suitable for detecting trace mercury ions.
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