Abstract：In this study, a new three-dimensional (3D) porous metal-organic Frameworks (MOFs) {[Me2NH2][Zn(btc)]·DMF (1)} was constructed with 1,4 terephthalic acid ligands. The structural characteristics of compound 1 were studied by infrared spectroscopy, single crystal X-ray diffraction (XRD), powder X-ray diffraction (PXRD) and thermogravimetric analysis (TGA). Firstly, the excitation spectrum and emission spectrum of compound 1 were tested, and the fluorescence response of compound 1 to different cations in aqueous solution was explored. The experimental results showed that compound 1 could effectively identify Fe3+ and NB ions from other ions. The detection limits of Fe3+ and NB were 5.52×10-7 and 6.94×10-7 mol·L-1, respectively. The adsorption effect of compound 1 on water-soluble dyes was further tested, and the adsorption capacity of CR dye was 302.33 mg·g-1. After 5 cycles of experiment, the removal rate of CR by compound 1 was still 88.2%. Therefore, compound 1 has significant potential advantages in the treatment of printing and dyeing wastewater.
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