6 results about "Carbon nanodots" patented technology

The present invention relates to the use of carbon nanodots to treat wastewater. Specifically, the invention relates to the use of carbon nanodots for improving the efficiency of microorganism-mediate

The application provides a carbon nanodot-based temperature sensor and a preparation method thereof. The carbon nanodot-based temperature sensor comprises, from bottom to top, a substrate layer, an interdigital electrode layer and a sensing layer. The sensing layer comprises hydrophilic carbon nanodot particles and an ionic salt. The sensing layer is formed by drop coating of a mixed aqueous solution of the hydrophilic carbon nanodot particles and the ionic salt. The preparation method is simple and easy to implement, and has low cost. The prepared temperature sensor has high sensitivity, high precision and high stability. The sensitivity of the temperature sensor reaches 345951.8%℃ ‑1 .

This invention discloses a type of N-doped carbon nanodots and their application in the detection of tinidazole, belonging to the field of analytical detection. The preparation method of the N-doped carbon nanodots in this invention is as follows: L-lysine, ethylenediamine, and water are mixed to form a mixture, which is then heated to react. After the reaction, the N-doped carbon nanodots are purified. This invention is the first to use L-lysine and ethylenediamine as precursors to prepare carbon nanodots and achieve quantitative detection of tinidazole. It is low-cost, highly sensitive, and suitable for rapid on-site detection, possessing high practical value and promising prospects for widespread application.

This invention discloses carbon nanodots, their preparation method, and their applications, relating to the field of carbon nanomaterials technology. The carbon nanodots are prepared by solvothermal treatment of nicotinamide, urea, and citric acid or its derivatives. The citric acid derivative is selected from citrate, citric acid hydrate, or citrate hydrate. This invention synthesizes carbon nanodots using nicotinamide as a precursor under solvothermal treatment, simultaneously integrating intrinsic bioactivity, efficient photothermal conversion capability, and red fluorescence imaging function. This multifunctional synergistic therapy overcomes the limitations of single-therapy approaches. Furthermore, the carbon nanodots provided by this invention exhibit extremely high biocompatibility.

This invention relates to copper single-atom carbon dot nanozymes with SOD enzyme activity, their preparation methods, and applications. The copper single-atom carbon dot nanozyme with SOD enzyme activity is obtained by loading copper single atoms onto the surface of nitrogen-doped carbon quantum dots, wherein the copper single atoms are in Cu... 2+ The nitrogen-doped carbon quantum dots are dispersed on the surface of nitrogen-doped carbon quantum dots. In this invention, the surface of the nitrogen-doped carbon quantum dots contains various asymmetric C and N sites, and the presence of N is beneficial for promoting Cu... 2+ Dispersion, reduction of Cu 2+ Reunion, through N and Cu 2+ Coordination to achieve stable Cu 2+ The atomic-level dispersion ensures the high activity, stability, and metal economy of the copper single-atom carbon nanodot nanozyme with SOD enzyme activity of the present invention.

This invention relates to the field of luminescent materials technology, specifically to a method for preparing room-temperature solid-state phosphorescent stable dual-matrix carbon nanodots and their applications. The method uses dextrin, 3-aminopropyltriethoxysilane, and boric acid as raw materials. By simultaneously introducing a silicon matrix and a boron matrix to form a dual-matrix system, the method combines the excellent stability of the silicon matrix with the unique electronic modulation capabilities of boron. Room-temperature solid-state phosphorescent stable dual-matrix carbon nanodots are synthesized via a hydrothermal method. After three cycles of water immersion-drying, the phosphorescence intensity of the obtained dual-matrix carbon nanodots decreases by only 6% to 7%. The carbon nanodots synthesized by this method have broad application prospects in the fields of anti-counterfeiting and information encryption.