am1c16742_si_002.cif (6.08 MB)
Ultrasensitive and Selective Detection of Uranium by a Luminescent Terbium–Organic Framework
dataset
posted on 2021-10-25, 20:04 authored by Min Lei, Yuyu Jia, Wei Zhang, Jian Xie, Zhijun Xu, Yanlong Wang, Wei Du, Wei LiuDetection
and remediation of radioactive components have become
the focus of worldwide research interest due to the ever-increasing
generation of nuclear waste and the concerns on nuclear accidents.
Among the numerous radionuclides, uranium and its isotopes receive
the most attention because of their high proportion in nuclear waste
and long half-life. Herein, a highly luminescent terbium–organic
framework, formulated as [Tb4(C29O8H17)2(NO3)4(DMF)4(H2O)4]·4H2O·8.5DMF
(YTU-100), with exceptional sensitivity and selectivity
toward uranium was successfully prepared. The material exhibits fast
adsorption kinetics and moderate sorption capacity. Interestingly,
the luminescence intensity variation highly correlates to the amount
of adsorbed uranium, which results in a quantitative, accurate, and
selective uranium detection manner. The detection limits in deionized
water and tap water were determined to be 1.07 and 0.75 ppb, respectively,
which are lower than the US Environmental Protection Agency standard
of the maximum contamination of uranium in drinking water. YTU-100 offers an alternative approach for building multifunctional MOFs
used for simultaneous detection and removal of uranium from aqueous
solutions.
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moderate sorption capacity29 sub2 sub5dmf (< b100 bselectivity toward uranium8 sub· 8)< subtap watersuccessfully preparedsimultaneous detectionselective detectionradioactive componentsnumerous radionuclidesnuclear wastenuclear accidentsmaximum contaminationlong halfisotopes receiveincreasing generationhigh proportionexceptional sensitivitydrinking waterdetection limitsdeionized wateraqueous solutionsalternative approachadsorbed uranium75 ppb