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<p>Leveraging size-tunable luminescence and surface-engineered functionalities, quantum dots (QDs) enable ultrasensitive environmental monitoring while minimizing ecological footprints. This comprehensive review highlights the diverse classes of fluorescent QDs, including carbon, silicon, copper, and doped variants, as well as their transformative applications in agricultural production and food safety. Possessing their tunable fluorescence, exceptional stability, and biocompatibility, QDs drive innovations across both domains. In sustainable agriculture, CQDs serve as nano-priming agents that enhance pigeon pea germination and root vitality, while silicon QDs function as foliar light fertilizers that boost lettuce biomass by matching chloroplast absorption spectra. Crucially, QDs antiviral platforms reduce the overuse of pesticides by suppressing viruses through RNA targeting, thereby curbing soil contamination. For food safety, copper QDs on graphdiyne nanosheets detect organophosphorus pesticides at ultralow concentrations (1 ng/mL), overcoming interference challenges. Integration of QDs with immunomagnetic separation enables visual quantification of E. coli O157:H7 (500 CFU/mL detection limit), and doped CQDs achieve rapid aflatoxin screening in dairy products (0.07 ng/mL) via fluorescence quenching. Future priorities include AI-optimized design-for-degradation of perovskite QDs, the development of heavy metal free QDs for soil remediation, and the integration of solar-powered QDs sensors for real-time tracking across supply chains. To translate these laboratory advances into field applications, establishing standardized validation protocols is crucial for positioning QDs as reliable keystones in planetary boundary-compliant food systems.</p>

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A comprehensive review of quantum dot nanotechnology for eco-intelligent sensing in sustainable agriculture and food safety

  • 期刊论文

  • 发表日期：

    2026年3月9日

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  • Xiaohui Yu,
  • Qinqin Liu

摘要

Leveraging size-tunable luminescence and surface-engineered functionalities, quantum dots (QDs) enable ultrasensitive environmental monitoring while minimizing ecological footprints. This comprehensive review highlights the diverse classes of fluorescent QDs, including carbon, silicon, copper, and doped variants, as well as their transformative applications in agricultural production and food safety. Possessing their tunable fluorescence, exceptional stability, and biocompatibility, QDs drive innovations across both domains. In sustainable agriculture, CQDs serve as nano-priming agents that enhance pigeon pea germination and root vitality, while silicon QDs function as foliar light fertilizers that boost lettuce biomass by matching chloroplast absorption spectra. Crucially, QDs antiviral platforms reduce the overuse of pesticides by suppressing viruses through RNA targeting, thereby curbing soil contamination. For food safety, copper QDs on graphdiyne nanosheets detect organophosphorus pesticides at ultralow concentrations (1 ng/mL), overcoming interference challenges. Integration of QDs with immunomagnetic separation enables visual quantification of E. coli O157:H7 (500 CFU/mL detection limit), and doped CQDs achieve rapid aflatoxin screening in dairy products (0.07 ng/mL) via fluorescence quenching. Future priorities include AI-optimized design-for-degradation of perovskite QDs, the development of heavy metal free QDs for soil remediation, and the integration of solar-powered QDs sensors for real-time tracking across supply chains. To translate these laboratory advances into field applications, establishing standardized validation protocols is crucial for positioning QDs as reliable keystones in planetary boundary-compliant food systems.