Graphene / gold nano- "quenching / enhanced fluorescence" mechanism for detection of mercury heavy metals

China Education Equipment Purchasing Network News: With the support of the National Major Research Program “Research on the Application of Nanotechnology to Remove Micro Pollutants in Drinking Water” established by the Ministry of Science and Technology, the Institute of Intelligent Research, Institute of Material Science, Chinese Academy of Sciences has developed and developed a fluorescence-based The new mechanism of the detection method, the corresponding detection system is designed, and the highly sensitive optical detection of mercury ion in drinking water is realized.

The issue of drinking water safety is increasingly receiving worldwide attention. Exploring new methods and mechanisms for the detection of micro-pollutants in water by nanotechnology and evaluating the safety of drinking water is a challenging and important research task. Research Institute of Research Institute of Bionic Functional Materials and Sensors, Institute of Intelligent Research Institute of Jinhuai Liu, Associate Researcher Wang Jin, Postdoctor Kong Lingtao, etc. jointly developed a new type of hybridization using the fluorescence quenching of carbon nanomaterial graphene and the fluorescence enhancement of nanogold The "quenching / enhanced fluorescence" mechanism realizes the high-sensitivity optical detection of mercury ion in drinking water. The related achievements have been officially published in the Royal Society of Chemistry (RSC) internationally renowned academic journal "Chemical Communications" (Chemical Communications), review peer experts agreed that this is a highly comprehensive research on existing nanotechnology The fluorescence detection mechanism proposed by the personnel for the detection of heavy metal pollutants in water is universal.

In addition to paying attention to the detection of inorganic micro-pollutants in water, the researchers of the research group have also made new achievements in the detection of trace amounts of organic micro-pollutants in water. Using cup-shaped macrocyclics to selectively capture organic pollutants and modify them on the surface of carbon nanomaterials or nanogolds, through the analysis of photoelectric signals, the low concentration of aromatic organic pollutants can be effectively detected. The related achievements were selected as highlight work and back cover articles by the Journal of Materials Chemistry of the Royal Society of Chemistry.

Based on the above fruitful series of research work, the researchers of the Institute of Intelligence will further explore and develop new optical detection mechanisms and methods on the basis of nanomaterials with special optical properties, with a view to achieving ultra-sensitive detection of micro-pollutants in drinking water .

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