Nitrogen-doped carbon quantum dots derived from periplaneta americana dregs as well as preparation method and application of nitrogen-doped carbon quantum dots

Nitrogen-doped carbon quantum dots were prepared from American cockroach residue using a one-step hydrothermal method, solving the problems of resource utilization of residue and the complexity of Ag+ detection. This method enables high-value utilization of residue and rapid, sensitive Ag+ detection, and is suitable for the detection of Ag+ in wastewater and solvents.

CN121718342APending Publication Date: 2026-03-24DALI UNIV
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Patent Information

Application Number
CN202511757830.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-11-27
Publication Date
2026-03-24

AI Technical Summary

Technical Problem

Existing technologies for the resource utilization of Central American cockroach residue are inefficient and costly. Traditional carbon dot synthesis methods suffer from high raw material costs, poor sustainability, and toxic byproducts. Furthermore, Ag+ detection methods are complex and not suitable for rapid detection.

Method used

Nitrogen-doped carbon quantum dots were prepared from American cockroach residue using a one-step hydrothermal method for the detection of Ag+. The results demonstrated a rapid and sensitive detection of Ag+ by utilizing the synergistic mechanism of internal filtration effect and photoinduced electron transfer.

Benefits of technology

The high-value utilization of American cockroach residue has been realized. The prepared nitrogen-doped carbon quantum dots have excellent optical properties and stability, and can be used for the selective, sensitive and anti-interference detection of Ag+ with a detection limit of 5.54 μM. They are suitable for the rapid detection of Ag+ in wastewater and solvents.

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Abstract

The invention discloses nitrogen-doped carbon quantum dots derived from American cockroach dregs as well as a preparation method and application of the nitrogen-doped carbon quantum dots, and belongs to the technical field of nitrogen-doped carbon quantum dots. The nitrogen-doped carbon quantum dots are prepared from the American cockroach dregs by a one-step hydrothermal method, optimal synthesis parameters are obtained through experimental optimization of synthesis conditions, and the prepared nitrogen-doped carbon quantum dots have excellent optical characteristics and stability; the invention also provides an application of the nitrogen-doped carbon quantum dot in Ag < + > detection, the nitrogen-doped carbon quantum dot has good selectivity, sensitivity and anti-interference performance on Ag < + >, a detection mechanism is an internal filtering effect and light-induced electron transfer, and the nitrogen-doped carbon quantum dot can be used as a preferred fluorescent material of an Ag < + > fluorescent sensor. The nitrogen-doped carbon quantum dots synthesized by the method not only have an Ag < + > sensing function, but also realize high-valued utilization of medicine residues, and also provide a new thought for self-doping of heteroatoms.
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