A carbon dot composite material for detecting phosphorus content in water.

CN117568015BActive Publication Date: 2026-05-26CHENGDU UNIVERSITY OF TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHENGDU UNIVERSITY OF TECHNOLOGY
Filing Date
2023-11-17
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing technologies for detecting phosphate ions (PO43-) in water suffer from problems such as complex methods, high costs, environmental hazards, or the need for precious metal materials, making it difficult to achieve efficient, low-cost, and environmentally friendly specific detection.

Method used

A CDs@MIL-101(Fe) fluorescent probe was formed by combining biomass carbon dots (CDs) with MIL-101(Fe). This composite material was prepared by hydrothermal method and used for the specific detection of PO43-.

Benefits of technology

This invention provides a low-cost, environmentally friendly fluorescent probe with good water solubility and biocompatibility. It can specifically detect PO43- in complex environments, with a detection limit of 5.1–15.4 μmol/L and a high linear correlation coefficient.

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Abstract

This invention relates to a method for detecting PO4 in water. 3‑ The CDs@MIL-101(Fe) fluorescent probe belongs to the field of fluorescent material detection and analysis. This invention mainly includes (1) the preparation of CDs@MIL-101(Fe), in which CDs and MIL-101(Fe) were prepared by hydrothermal method, and CDs@MIL-101(Fe) was formed by stirring and coordination; (2) CDs@MIL-101(Fe) is a fluorescent probe, and the fluorescence recovery value in the CDs@MIL-101(Fe) solution system is detected after adding different anion solutions; (3) CDs@MIL-101(Fe) is a fluorescent probe, and the fluorescence recovery value in the CDs@MIL-101(Fe) solution system is detected by changing PO4. 3‑ The concentration of CDs@MIL-101(Fe) can be used to detect the fluorescence intensity of PO4. 3‑ The relationship with ionic solutions. The entire preparation process is simple and allows for the detection of PO4. 3‑ With its advantages of requiring no sample processing, high detection sensitivity, and simple and rapid operation, it has broad application prospects in the field of water environment monitoring.
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