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A new colorimetric sensor for Pb2+ based on bimetallic (Eu-Tb) lanthanide (Ln) metal-organic frameworks (MOFs) was developed for field screen analysis of lead-polluted environmental water. The Ln-MOFs were prepared by using a simple and fast synthetic method, with Tb3+/Eu3+ and 1,4-benzenedicarboxylate (BDC) as precursors. The color of the luminescent Ln-MOFs could be fine-tuned from green to red...
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