Highly efficient cataluminescence gas sensor for acetone vapor based on UIO-66 metal-organic frameworks as preconcentrator
Highly efficient cataluminescence gas sensor for acetone vapor based on UIO-66 metal-organic frameworks as preconcentrator
复制标题
基于UIO-66金属有机框架作为预浓缩器的高效丙酮蒸气催化发光气体传感器
DOI：
10.1016/j.snb.2020.127952
复制
发表时间：
2020-06-01
影响因子：
8.4
通讯作者：
Lv, Yi
中科院分区：
文献类型：
--
作者：
Huang, Xiaoying;Huang, Zili;Lv, Yi
金属-有机骨架材料由于其超高的孔隙率，近年来在气体捕集富集方面显示出了巨大的吸附潜力。在此，我们制作了一个简单的和廉价的国产吸附装置的基础上UIO-66作为预浓缩器，这是第一次耦合到快速催化发光（CTL）传感器来测定丙酮蒸气。UIO-66预富集后CTL发射增强了25倍，表明UIO-66预富集器可以有效地改善灵敏度。至于UIO-66对丙酮分子的吸附机制，我们推测丙酮分子优先位于亲水性高的锆簇上。所提出的联合收割机与UIO-66吸附相结合的CTL传感器对丙酮的检测限可达2.79 ppm，并表现出良好的选择性、简单性、快速性和可回收性。本研究为UIO-66作为预浓缩器提高分析性能提供了有吸引力的前景，并为小型化便携式丙酮传感器的研制提供了前景。
Metal-organic frameworks (MOFs) showed a significant sorption potential in the gas capture and preconcentration during recent years because of its super porosity. Herein, we fabricated a simple and inexpensive home-made adsorption apparatus based on UIO-66 as the preconcentrator, which was firstly coupled with a rapid cataluminescence (CTL) sensor to determine acetone vapor. The CTL emission was enhanced by 25 times after the preconcentration of UIO-66, indicating the UIO-66 preconcentrator could efficiently ameliorate sensitivity. As for the adsorption mechanism of UIO-66 for acetone molecules, we deduced that acetone molecules were preferentially located on the Zr clusters with high hydrophilicity. The proposed CTL sensor in combine with UIO-66 adsorption granted a detection limit of acetone down to 2.79 ppm, and demonstrated good selectivity, simplicity, rapidity, and recyclability. This study provides appealing perspectives of UIO-66 as the preconcentrator for the improvement of analytical performance, and the prospect of a miniaturized portable acetone sensor.