※MWMS: magnetic composite microspheres with a wrinkled surface; MHNTs: magnetic halloysite nanotubes; MPTS: γ-methacryloxypropyltrimethoxysilane
The adsorption isotherm data of MTCFs@SIP@CBMA and MTCFs@NIP@CBMA to BSA were further evaluated using Langmuir and Freundlich isotherm models. The fitted linear curve is shown in Figure S2, and relevant parameters are listed in Table 3. By comparing R2, it can be seen that the Langmuir model could better fit the adsorption isotherm data of MTCFs@SIP@CBMA and MTCFs@NIP@CBMA. This illustrated that the adsorption process was monolayer adsorption. The theoretical maximum adsorption capacities of MTCFs@SIP@CBMA and MTCFs@NIP@CBMA calculated by Langmuir model were 421.69 mg/g and 69.37 mg/g. These were basically consistent with the experimental data.
Table 3 Related parameters of Langmuir and Freundlich isotherm models obtained by fitting