研究目的
Developing a simple and low-cost analytic technique for humidity and ethanol detection using a novel visual and fluorometric-sensor paper.
研究成果
The developed dual-emitting visual-sensor paper shows promise for visual and fluorometric sensing of humidity and ethanol, with a linear relationship observed between fluorescence intensity ratio and humidity in the range of 40-80%. The sensor also responds excellently to ethanol, making it a versatile tool for environmental monitoring and industrial applications.
研究不足
The study focuses on the detection of humidity and ethanol but does not explore the sensor's response to other gases or volatile organic compounds. The sensor's performance in extreme conditions or over long periods is not discussed.
1：Experimental Design and Method Selection:
The study involves the preparation of a dual-emission visual-sensor paper by immobilizing copper nanoclusters (CuNCs) and carbon dots (CDs) on a filter paper. The detection mechanism is based on the fluorescence intensity variation of CuNCs in different environments.
2：Sample Selection and Data Sources:
CuNCs and CDs are synthesized and characterized for their properties. Different saturated salt solutions are used to provide a series of gradient humidity environments.
3：List of Experimental Equipment and Materials:
Includes copper nitrate trihydrate, isopropanol, lithium chloride, magnesium chloride, potassium carbonate, potassium iodide, reduced glutathione, potassium acetate, magnesium nitrate, sodium chloride, potassium chloride, potassium nitrate, urea, and citric acid.
4：Experimental Procedures and Operational Workflow:
The CuNCs and CDs are synthesized and then immobilized on filter paper to create the sensor. The sensor's response to humidity and ethanol is tested by placing it in different humidity environments and ethanol solutions, respectively.
5：Data Analysis Methods:
Fluorescence spectra are detected using a spectrophotometer, and the relationship between fluorescence intensity ratio and humidity is analyzed.
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