Wherein, since the aromatic ring structure COF-TE contained less, π-π stacking effect is weak, greater interlayer spacing, Pb2 + higher diffusion rate in its interior, so COF-TE adsorption better.
Among them, because the structure of COF-TE contains fewer rings, the accumulation of slugs is weak, the layer spacing is larger, and the diffusion rate of Pb2 is higher inside, so the adsorption effect of COF-TE is better.
Among them, the adsorption effect of cof-te is better because it contains fewer aromatic rings, weak π - π stacking, larger layer spacing and higher diffusion rate of Pb2 + in its interior.