N-CQDs lithium-ion imprinting sensor and preparation method and application thereof

An ion imprinting and sensor technology, applied in the direction of instruments, scientific instruments, analytical materials, etc., can solve problems such as complexity and environmental pollution of finished products, and achieve the effects of high conversion rate, simple and feasible operation, and excellent selectivity
CN109679013AInactive Publication Date: 2019-04-26JIANGSU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGSU UNIV
Publication Date
2019-04-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to an ion imprinting sensor, in particular to an N-CQDs lithium-ion imprinting sensor and a preparation method and application thereof, and belongs to the technical field of environmental material preparation. The preparation method includes the steps that cheap green citric acid (CA) is first taken as a carbon source, and ethylenediamine (EDA) is used for nitrogen doping toobtain nitrogen doped carbon quantum dots (N-CQDs) with good fluorescence performance; and then the N-CQDs are used for being combined with an ion imprinting technology (IIT), organic complexes of benzo 15 crown 5 (B15C5) and Li<+> are used as template ions, methanearsonic acid (MAA) is used as a functional monomer, EGDMA is used as a crosslinking agent, azobisisobutylntrile (ABIN) is used as an initiator, and a precipitation polymerization method is used, and the N-CQDs lithium-ion imprinting sensor (N-CQDs / IIP) is prepared and used for detection. The prepared N-CQDs lithium-ion imprinting sensor has good stability and optical performance, and has the ability to selectively identify lithium ions.
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Description

technical field

[0001] The invention relates to an ion imprinting sensor, in particular to an N-CQDs lithium ion imprinting sensor, a preparation method and an application, and belongs to the technical field of environmental material preparation. Background technique

[0002] Lithium is a trace element that is beneficial to the human body, but excessive lithium causes serious harm to human health. Excessive intake of lithium will cause certain harm to the local and systemic health of the human body. The local effect is mainly manifested as strong stimulation and damage to the skin and mucous membranes, while the systemic effect may affect various systems of the body. In terms of the central nervous system, lithium poisoning often manifests in neuromuscular aspects, ranging from laziness, sluggish thinking, inability to concentrate, mental retardation, muscle tremors, to further causing convulsions, loss of consciousness, and even coma and death. May cause muscle weakness, m...

Claims

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