Preparation and Characterization of Metal-Organic Frameworks and its Composites Eu <sub/>2</sub> O <sub/>3</sub> @[Zn <sub/>2</sub> (bdc) <sub/>2</sub> dabco] (ZBDh) via Pulsed Laser Ablation in Flow Liquid

摘要： This work reports the compounds of [Zn2(bdc)2dabco] (ZBDh) and [Zn2(bdc)2dabco] (ZBDt) and the composite Eu2O3@[Zn2(bdc)2dabco](ZBDh) synthesized by pulsed laser ablation in flowing liquid. At an appropriate reactants concentration of reactants, the phase ZDBh transforms into phase ZDBt by an increase of the irradiation time from 4 to 40 mins. The results show that the Eu2O3 nanoparticles with an average size of 3.17 nm are uniformly distributed among the crystal and the BET specific surface area of the composite Eu2O3@[Zn2(bdc)2dabco] (ZBDh) is 1621 m2/g, which is larger than that of compound [Zn2(bdc)2dabco] (ZBDh). Moreover, the composite Eu2O3@[Zn2(bdc)2dabco](ZBDh) can emit very intense characteristic fluorescence at 613 nm of Eu3+ ion under ultraviolet radiation and can be used for detecting of methanol molecules in fluorescence sensing because of its fluorescence intensity at 613 nm is sensitive to the content of methanol in solvent.