A method for preparing fluorescent carbon dots using chloroplast as carbon source

Abstract

The invention belongs to the technical field of chemical application, and in particular relates to a fluorescent carbon dot solution synthesized by a hydrothermal method using chloroplast as a carbon source and used for pH detection. The method for detecting the pH value of the solution includes the following steps: using chloroplast as the carbon source, water as the dispersion liquid, and synthesizing the fluorescent carbon dot solution under the heating condition of the hydrothermal reaction kettle. Obtain the carbon dot solution with fluorescence characteristics; After the fluorescent carbon dot solution reacts with the solution of different pH, there is a good linear relationship between the fluorescence intensity value and the pH value of the fluorescent carbon dot solution F = 395.44‑10.36x, where I F is the fluorescence intensity value, x is the pH value, and the detectable pH range of the solution is 1.83-10.38. The invention has a simple process, can quickly prepare fluorescent carbon dots, and can accurately measure the pH of the solution.

Description

technical field [0001] The invention belongs to the technical field of chemical application, and specifically relates to a fluorescent carbon dot solution synthesized by a hydrothermal method using chloroplast as a carbon source; the pH of the solution can be detected by utilizing the different fluorescent intensity values ​​of the fluorescent carbon dot solution reacting with solutions of different pH . Background technique [0002] Fluorescent carbon dots are a new type of nanomaterial with a diameter of less than 10nm, which has become a research hotspot in the carbon nano family because of its low toxicity, stable chemical properties, excellent water solubility, photobleaching resistance, and easy functionalization. These excellent properties of fluorescent carbon dots make it have broad application prospects in the fields of biomarkers, environmental analysis, photoelectric sensing and so on. At present, it is still difficult to achieve uniform synthesis of carbon dots...

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Problems solved by technology

[0003] In the early days, people used the electrochemical method to measure the pH value. However, due to the high impedance of the traditional glass electrode, it is easily damaged, and it is not suitable for the measurement of pH in fluorine-containing solutions, and there is a "sodium error" in a highly alkaline environment. Many problems encountered in pH measurement

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