Abstract
Under the hydrothermal condition, two novel two-dimensional coordination polymers ([Cd(D-Cam)(bpb)]n, CP-1 and [Zn(D-Cam)(bpb)]n, CP-2) have been constructed, and they have similar structures. It is composed of D-(+)-camphor (D-Cam) and metal center (Cd(II) and Zn(II)) to construct one-dimensional chains, which are connected by the “V” shaped flexible 1,2-Bis((pyridin-4-ylthio)methyl)benzene (bpb) bridging ligand to form two-dimensional layer structure. CP-1 and CP-2 not only have good stability, but also can remove Hg(II) ions in water, and maximum adsorption capacity is 240 mg/g and 329 mg/g, respectively. Both the adsorption of Hg(II) ions on CP-1 and CP-2 can be well fitted by the Langmuir model and pseudo-second-order kinetics model. Moreover, CP-1 and CP-2 can still maintain a high adsorption capacity, even in a complex environment where a large number of other ions exist.
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