Highly efficient cataluminescence gas sensor for acetone vapor based on UIO-66 metal-organic frameworks as preconcentrator

被引:50
|
作者
Huang, Xiaoying [1 ]
Huang, Zili [2 ]
Zhang, Lichun [2 ]
Liu, Rui [2 ]
Lv, Yi [1 ]
机构
[1] Sichuan Univ, Analyt & Testing Ctr, Chengdu 610064, Peoples R China
[2] Sichuan Univ, Coll Chem, Key Lab Green Chem & Technol, Minist Educ, Chengdu 610064, Peoples R China
基金
中国国家自然科学基金;
关键词
Cataluminescence; Gas sensor; Preconcentration; ZrO2; UIO-66; Acetone; ASSISTED CATALUMINESCENCE; SYSTEM; CHEMILUMINESCENCE; MICROEXTRACTION; ADSORBENTS; STRATEGY; MOF-5;
D O I
10.1016/j.snb.2020.127952
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
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.
引用
收藏
页数:8
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