Che Huachao, Yan Shulin, Nie Yulun, Tian Xike, Li Yong
Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, PR China.
Wuxi Little Swan Electric Co., Ltd., No. 18 South Changjiang RD, National High-tech Development Zone, Wuxi, PR China.
J Hazard Mater. 2022 Aug 5;435:129016. doi: 10.1016/j.jhazmat.2022.129016. Epub 2022 Apr 27.
Aniline has attracted much concern for its long degradation half-life and huge toxicity to the environment and human beings. Therefore, the development of a multi-functional device for visual detection and efficient removal of aniline was highly anticipated. In our work, the small-size Eu@UiO-66(COOH) was obtained by post-synthesis modification (PSM), and then the film-based fluorescent sensor was prepared by crosslinking reaction. The films not only showed incredible mechanical stability and potential for large-scale preparation, but also have excellent fluorescence response to aniline in solutions and gas phase. As the concentration of aniline increased, the fluorescence of films gradually increased at 350 nm, while the fluorescence gradually quenching at 620 nm, and the detection limits (LOD) of aniline in water and air were 0.27 ppb and 0.086 ppb, respectively. In addition, the adsorption performance of the film for aniline has also been confirmed and the maximum adsorption capacity was 32.6 mg/g, which is a strong guarantee for the realization of ultra-trace detection and toxicity reduction of aniline. In summary, the multi-functional film sensor has been designed for ultra-trace detection and efficient removal of aniline in solutions and gas phase, and have significant value for pollutant treatment, ecological restoration and early prevention.
苯胺因其降解半衰期长且对环境和人类具有巨大毒性而备受关注。因此，人们高度期待开发一种用于可视化检测和高效去除苯胺的多功能装置。在我们的工作中，通过后合成修饰（PSM）获得了小尺寸的Eu@UiO-66(COOH)，然后通过交联反应制备了基于薄膜的荧光传感器。这些薄膜不仅表现出令人难以置信的机械稳定性和大规模制备的潜力，而且对溶液和气相中的苯胺具有优异的荧光响应。随着苯胺浓度的增加，薄膜在350 nm处的荧光逐渐增强，而在620 nm处的荧光逐渐猝灭，水中和空气中苯胺的检测限（LOD）分别为0.27 ppb和0.086 ppb。此外，该薄膜对苯胺的吸附性能也得到了证实，最大吸附容量为32.6 mg/g，这为实现苯胺的超痕量检测和毒性降低提供了有力保障。综上所述，已设计出用于超痕量检测和高效去除溶液和气相中苯胺的多功能薄膜传感器，对污染物处理、生态修复和早期预防具有重要价值。
