Photoluminescent Tb^(3+)-based metal-organic framework as a sensor for detection of methanol in ethanol fuel

作     者：Ramon R.F.Fonseca Rafael D.L.Gaspar Ivo M.Raimundo Jr. Priscilla P.Luz 

作者机构：Department of Chemistry Federal University of Espírito Santo Institute of Chemistry University of Campinas 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2019年第37卷第3期

页      面：225-231页

核心收录：

学科分类：081702[工学-化学工艺] 0709[理学-地质学] 0819[工学-矿业工程] 081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0708[理学-地球物理学] 070302[理学-分析化学] 0703[理学-化学] 

基　　金：the Brazilian agencies FAPES (Fundacao de Amparo a Pesquisa do Estado do Espirito Santo) FAPESP (Fundacao de Amparo a Pesquisa do Estado de Sao Paulo) for financial scholarship 

主　　题：Lanthanide Metal-organic frameworks Luminescence Ethanol fuel Sensor Adulteration 

摘      要：The sensing capability of a Tb^(3+)-metal-organic framework, based on its photoluminescence, was used for detection of methanol in ethanol fuel. It was synthesized using terbium and trimesic acid as a metal ion center and ligand, respectively. Powder X-ray diffraction, infrared spectroscopy, thermogravimetric analysis and scanning electron microscopy were employed to characterize the synthesized MOF-76 structural features. According to the results, MOF-76 was successfully obtained with minor synthetic modification and its activated form(named TbTMA) was tested as a sensor for methanol. Tb^(3+) luminescence intensity increases as the methanol concentration in ethanol fuel also increases and the water content does not affect this response. Our findings indicate TbTMA as an appropriate sensor for evaluating ethanol fuel adulteration by methanol addition above the allowed limit.