Progress in Heteroatom Doping of Carbon Quantum Dots and Their Applications in Food Packaging

LI Kaiqi; MA Xiaojun; LI Dongna; YU Lili

doi:10.19554/j.cnki.1001-3563.2025.23.008

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Packaging Engineering ›› 2025, Vol. 46 ›› Issue (23) : 80-87. DOI: 10.19554/j.cnki.1001-3563.2025.23.008

Special Topic on Open Packaging Innovation Driving the Industrialization of Healthy and Nutritional Food

Progress in Heteroatom Doping of Carbon Quantum Dots and Their Applications in Food Packaging

LI Kaiqi, MA Xiaojun^*, LI Dongna, YU Lili

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Abstract

The work aims to systematically review the regulatory effect of the key modification strategy of heteroatom doping on the properties of carbon quantum dots, and summarize the latest application progress of functionalized carbon quantum dots in the field of food packaging, so as to provide a theoretical basis for the development of next-generation intelligent, safe, and efficient food packaging materials. Based on relevant Chinese and international literature, the preparation methods of CQDs were summarized, with a focus on analyzing strategies for heteroatom doping with nitrogen (N), sulfur (S), phosphorus (P), etc., to regulate the electronic structure, optical properties, and surface functionalities of CQDs. Then, the applications of functionalized CQDs in food packaging were also summarized. In the future, further precise regulation of the structure and properties of CQDs is required to enhance consumer perception and acceptance of CQDs in food packaging, explore the interaction mechanisms between CQDs and food components, and provide a scientific basis for the application of CQDs in intelligent food indicators, antibacterial preservation, safety detection, and anti-counterfeiting packaging.

Key words

carbon quantum dot / heteroatom doping / food packaging / fluorescence

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LI Kaiqi, MA Xiaojun, LI Dongna, YU Lili. Progress in Heteroatom Doping of Carbon Quantum Dots and Their Applications in Food Packaging[J]. Packaging Engineering. 2025, 46(23): 80-87 https://doi.org/10.19554/j.cnki.1001-3563.2025.23.008

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