A boron-nitrogen co-doped fluorescent carbon quantum dot, a preparation method thereof and use thereof for preparing a chromium / copper ion sensor
By using a boron-nitrogen co-doped fluorescent carbon quantum dot preparation method, the problems of limited selectivity and complex detection of existing fluorescent probes have been solved, achieving highly sensitive and simple detection of chromium and copper ions, which is suitable for on-site detection of heavy metal pollution.
CN121136704BActive Publication Date: 2026-05-01INST OF AGRI PROD QUALITY SAFETY & STANDARD JIANGXI ACAD OF AGRI SCI
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Patent Information
- Application Number
- CN202511332988.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-18
- Publication Date
- 2026-05-01
- Estimated Expiration
- 2045-09-18
AI Technical Summary
Technical Problem
Existing fluorescent probes have limited selectivity, complex processes, and cannot achieve simultaneous detection of multiple ions when detecting heavy metal ions. Traditional detection methods require complex pretreatment and cannot be adapted to field applications.
Method used
A chromium/copper ion sensor was fabricated by preparing boron-nitrogen co-doped fluorescent carbon quantum dots through a one-step synthesis process and utilizing pH response regulation to achieve highly sensitive detection of chromium and copper ions.
Benefits of technology
It achieves highly selective detection of chromium and copper ions under both acidic and non-acidic conditions, simplifies the detection process, is suitable for rapid on-site detection, and reduces detection costs and time.
✦ Generated by Eureka AI based on patent content.
Abstract
This invention relates to boron-nitrogen co-doped fluorescent carbon quantum dots, their preparation method, and their application in the fabrication of chromium / copper ion sensors. It belongs to the field of carbon quantum dot technology and includes the following steps: mixing o-phenylenediamine hydrochloride and boric acid to obtain a mixed solution; adding water to the mixed solution and ultrasonically dissolving it to obtain a mixed solution; treating the mixed solution at high temperature to obtain a boron-nitrogen co-doped carbon material solution; filtering the carbon material solution through a 0.22 μm microporous membrane to obtain a boron-nitrogen co-doped carbon quantum dot aqueous solution, and then dialyzing it using a dialysis bag for 36-48 h; freeze-drying the carbon quantum dot aqueous solution to obtain boron-nitrogen co-doped fluorescent carbon quantum dots. This invention achieves pH-controlled chromium / copper ion sensors using a single quantum dot material and a one-step synthesis process. 6+ / Cu 2+ The dual-channel high-sensitivity detection overcomes the technical barriers of limited probe selectivity, complex processes, and limited functionality in existing probes.
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