School of Applied Science, REVA University, Bengaluru 560064, India.
Center for Nano and Material Sciences, Jain University, Jain Global Campus, Kanakapura, Ramanagaram, Bangalore 562112, India.
Sensors (Basel). 2022 Nov 17;22(22):8895. doi: 10.3390/s22228895.
The functionalization of materials for ultrasensitive detection of heavy metal ions (HMIs) in the environment is crucial. Herewith, we have functionalized inexpensive and environmentally friendly FeO nanoparticles with D-valine (FeO-D-Val) by a simple co-precipitation synthetic approach characterized by XRD, FE-SEM, and FTIR spectroscopy. The FeO-D-Val sensor was used for the ultrasensitive detection of Cd, Pb, and Cu in water samples. This sensor shows a very low detection limit of 11.29, 4.59, and 20.07 nM for Cd, Pb, and Cu, respectively. The detection limits are much lower than the values suggested by the world health Organization. The real water samples were also analyzed using the developed sensor.
为了实现对环境中重金属离子（HMIs）的超灵敏检测，对材料进行功能化至关重要。在此，我们通过简单的共沉淀合成方法，用 D-缬氨酸（FeO-D-Val）功能化了廉价且环保的 FeO 纳米粒子，该方法通过 XRD、FE-SEM 和 FTIR 光谱进行了表征。FeO-D-Val 传感器用于水样中 Cd、Pb 和 Cu 的超灵敏检测。该传感器对 Cd、Pb 和 Cu 的检测限分别低至 11.29、4.59 和 20.07 nM。这些检测限远低于世界卫生组织建议的值。还使用开发的传感器分析了实际水样。
