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Nanoparticles

Novel Nanoparticle-Based Probe Detects Iodide Ions with High Sensitivity

Strategic Insights

— 2 min read

Research published by the Wuhan University of Technology has demonstrated a novel approach to detecting iodide ions using a combination of nicotine-based carbon quantum dots (NIC-CQDs) and silver nanoparticles (AgNPs). The probe, which was constructed from discarded cigarette butts, exhibits stable and intense blue luminescence, allowing for the detection of iodide ions in aqueous solutions with high sensitivity and a low detection limit of 32 nM.

Key Takeaways:

  • The novel probe, composed of NIC-CQDs and AgNPs, was designed to detect iodide ions in aqueous solutions with a linear detection range from 0.1 to 90 μM and a detection limit as low as 32 nM.
  • The probe's performance was validated through the detection of iodide ions in real water samples, with recoveries ranging from 94.28% to 104.28%.
  • The use of discarded cigarette butts as a source material for the NIC-CQDs and AgNPs offers a sustainable and environmentally friendly approach to nanoparticle production.
  • The research team, led by Lesan Yan, employed a novel approach to produce NIC-CQDs through a "novel off-on" fluorescent probe, which demonstrated excellent stability and sensitivity.
  • The combination of NIC-CQDs and AgNPs enabled the development of a highly sensitive probe for the detection of iodide ions, with a detection limit comparable to existing methods.
  • The probe's performance was characterized through experimental results, including emission spectra, fluorescent quenching, and detection limit studies.
  • The research has implications for the development of novel sensors and probes for detecting iodide ions in various applications, including environmental monitoring and medical diagnostics.
  • Additional authors on the research include Pengyuan Yin, Yuyue Xiong, Yanzhi He, Xianyun Bi, Wei Tan, Shaoqing Li, and Wenrong Yang.

Statistics:

  • Detection limit: 32 nM
  • Linear detection range: 0.1 to 90 μM
  • Recovery rates: 94.28-104.28% (RSD)
  • Number of authors: 9
  • Funding sources: Basic and Applied Basic Research Foundation of Guangdong Province, Natural Science Foundation of Shandong Province, Science Fund of Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai, Shenzhen Science and Technology Program, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing (Wuhan University of Technology), Yunnan Provincial Department of Science and Technology
  • Publication date: October 21, 2025
  • Journal: Journal of Physics Research

Sources:

  • NewsRx. Reports from Wuhan University of Technology Provide New Insights into Nanoparticles (A Novel "off-on" Fluorescence Probe Based On the Discarded Cigarette Butts-based Carbon Quantum Dots and Silver Nanoparticles for Iodide Ions Detection). Journal of Physics Research. October 21, 2025; p 1468.
  • A Novel "off-on" Fluorescence Probe Based On the Discarded Cigarette Butts-based Carbon Quantum Dots and Silver Nanoparticles for Iodide Ions Detection. Materials Today Nano, 2025;31.

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