Photoluminescent Tb3+-based metal-organic framework as a sensor for detection of methanol in ethanol fuel
来源期刊：Journal of Rare Earths2019年第3期
论文作者：Ramon R.F.Fonseca Rafael D.L.Gaspar Ivo M.Raimundo Jr. Priscilla P.Luz
文章页码：225 - 231
摘 要：The sensing capability of a Tb3+-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. Tb3+ 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.
Ramon R.F.Fonseca1，Rafael D.L.Gaspar2，Ivo M.Raimundo Jr.2，Priscilla P.Luz1
1. Department of Chemistry, Federal University of Espírito Santo2. Institute of Chemistry, University of Campinas
摘 要：The sensing capability of a Tb3+-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. Tb3+ 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.
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