In this research, Zeolitic imidazolate frameworks-67 (ZIF-67) with various morphologies were prepared in a simple way under different reaction conditions. By changing the reaction conditions, including the cobalt source, solvent, time, temperature, and the molar ratio of the linker agent to the cobalt ions, the morphology changes of ZIF-67 were investigated. The Prepared samples were identified with various techniques such as X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), adsorption-desorption (BET), thermogravimetric analysis (TGA), and Ultraviolet-visible UV-Vis. The ZIF-67 was applied as an adsorbent fiber in the solid-phase microextraction (SPME) technique for extracting a herbicide molinate, in aqueous samples. For recognizing the molinate molecules, ion mobility spectrometry (IMS) was employed as a sensitive, rapid, and simple detection technique. Two essential parameters, namely extraction temperature and extraction time, influenced the extraction efficiency, and these parameters were also analyzed and optimized. In this method, the linear dynamic range (LDR) and the limit of quantification (LOQ) were achieved to be 0.5–20.0 ?g L ?1 and 0.5 ?g L ?1 , respectively. Also, the limit of detection (LOD) and the determination coefficient were calculated to be and 0.15 ?g L ?1 and 0.9990, respectively. Finally, the effect of the adsorbent with different morphologies on the extraction efficiency was compared.