研究目的
Investigating the synthesis of metal-organic frameworks (MOFs) and their composites using pulsed laser ablation in flowing liquid, and studying their optical and adsorption properties.
研究成果
The study successfully synthesized [Zn2(bdc)2dabco] (ZBDh), [Zn2(bdc)2dabco] (ZBDt), and the composite Eu2O3@[Zn2(bdc)2dabco](ZBDh) using pulsed laser ablation in flowing liquid. The composite exhibits enhanced BET specific surface area and intense characteristic fluorescence at 613 nm, suitable for methanol detection in fluorescence sensing.
研究不足
The study is limited by the specific conditions required for the transformation between ZDBh and ZDBt phases, and the sensitivity of fluorescence intensity to methanol concentration may vary under different environmental conditions.
1：Experimental Design and Method Selection:
Pulsed laser ablation in flowing liquid was used to synthesize MOFs and their composites. The method involves laser irradiation of a solution or slurry of starting materials under high pure nitrogen atmosphere at room temperature.
2：Sample Selection and Data Sources:
Zn(NO3)2·6H2O, terephthalic acid (H2bdc), and 1,4-diazabicyclo[
3：2]octane (dabco) were used as reactants dissolved in DMF. List of Experimental Equipment and Materials:
A DCR-3G Nd:YAG laser operating at 532 nm was used for ablation. Other materials included Eu2O3, various solvents, and chemicals for characterization.
4：Experimental Procedures and Operational Workflow:
The slurry was stirred, irradiated by laser, then filtered and dried to obtain the product.
5：Data Analysis Methods:
Characterization was performed using X-ray powder diffraction, gas adsorption measurements, SEM, TEM, and fluorescence spectroscopy.
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