Lu Zhenyu, Liu Xue, Zhu Xiaohui, Lu Hao, Ma Yanan, Zhang Binbin, Huang Shijun, Xiang Mingdeng, Hu Guocheng, Yu Yunjiang
School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, China.
School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, China; Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510655, China.
J Hazard Mater. 2025 Aug 15;494:138683. doi: 10.1016/j.jhazmat.2025.138683. Epub 2025 May 20.
Glyphosate residues have raised significant concerns owing to their detrimental effects on public health and ecosystems. The development of adsorbents capable of simultaneous visual detection and removal of glyphosate remains challenging. In this study, a fluorescent zirconium-based metal-organic framework (BDC/TCPP-MOF) with dual emission signals was synthesized through a mixed-ligand strategy. The BDC/TCPP-MOF demonstrated remarkable selectivity and sensitivity for ratiometric fluorescence detection of glyphosate, achieving a limit of detection as low as 70 nmol/L (11.8 μg/L). Notably, the BDC/TCPP-MOF-based fluorescence sensor exhibited a distinct color transition from pink to blue during glyphosate detection. Furthermore, a portable hydrogel-based detection platform integrated with smartphone was developed, enabling rapid, real-time quantitative detection of glyphosate across a wide concentration range. The BDC/TCPP-MOF also demonstrated excellent glyphosate adsorption capacity (up to 116.85 mg/g) from water. Extensive characterisations demonstrate that visual recognition and efficient adsorption are primarily attributed to glyphosate-Zr-OH interactions, hydrogen bonding, and electrostatic interactions. This study not only provides valuable insights for the design of multifunctional MOF materials but also establishes a novel dual-functional material for visual detection and adsorption of glyphosate in water, demonstrating substantial potential for environmental pollution monitoring applications.
草甘膦残留因其对公众健康和生态系统的有害影响而引发了重大关注。开发能够同时对草甘膦进行视觉检测和去除的吸附剂仍然具有挑战性。在本研究中，通过混合配体策略合成了一种具有双发射信号的荧光锆基金属有机框架（BDC/TCPP-MOF）。BDC/TCPP-MOF对草甘膦的比率荧光检测表现出显著的选择性和灵敏度，检测限低至70 nmol/L（11.8μg/L）。值得注意的是，基于BDC/TCPP-MOF的荧光传感器在草甘膦检测过程中呈现出从粉红色到蓝色的明显颜色转变。此外，还开发了一种与智能手机集成的便携式水凝胶检测平台，能够在很宽的浓度范围内对草甘膦进行快速、实时定量检测。BDC/TCPP-MOF对水中草甘膦也表现出优异的吸附能力（高达116.85 mg/g）。大量表征表明，视觉识别和高效吸附主要归因于草甘膦-Zr-OH相互作用、氢键和静电相互作用。本研究不仅为多功能MOF材料的设计提供了有价值的见解，还建立了一种用于水中草甘膦视觉检测和吸附的新型双功能材料，在环境污染监测应用中显示出巨大潜力。
