## 2 Results and Discussion
### Adsorption Studies
Additionally, based on the analysis of the data presented in Figure 7, Figure 8 and Figure S2, and in Table 4 it may be found that the highest adsorption kinetics for all tested adsorbates was recorded in the system with the DVB:TEVS = 1:1. Summing up the discussion on DVB-TEVS adsorption effectiveness one can find that the synthesized materials show remarkable selectivity towards various adsorbates. Depending on the synthesis procedure it is possible to obtain the materials which are characterized by divergent uptakes and kinetic characteristics. they show similar thermal behaviour with several stages of the thermal degradation. The data obtained from TG/DTG/DSC curves are summarized in Table 5. The thermal analysis proved that up to 170 \({}^{\circ}\)C the materials are highly thermally stable. The exothermic peaks visible on DSC curve starting at 170 \({}^{\circ}\)C may be associated with the additional crosslinking processes related to the presence of tetrafunctional DVB monomer. The main step related to thermal destruction of crosslinked microspheres follows at temperatures 330-550 \({}^{\circ}\)C with the maximum at about 450 \({}^{\circ}\)C. In this stage an 84-85% decrease in the weight of studied materials is observed. In the 550-950 \({}^{\circ}\)C temperature range the weight loss is below 3%. The total mass loss is similar for all DVB-TEVS materials and it is about 87%. These results confirm that the materials are thermally stable up to at least 330 \({}^{\circ}\)C and the main destruction process occurs at about 450 \({}^{\circ}\)C, therefore, the synthesized materials may be applied in relatively wide temperature ranges. These observations were confirmed with the data of identification of thermal destruction products by mass spectrometry (MS) analysis. The MS profiles for DVB:TEVS = 1:1 are shown in Figures 10 and 11. The MS analysis confirms that the initial decomposition of these materials happens below 200 \({}^{\circ}\)C, and the major material destruction process is above 330 \({}^{\circ}\)C. Moreover, the MS data indicate that the thermal behaviour of DVB-TEVS materials is strictly connected with the presence of the 1,4-divinylbenzene matrix. The course of TG, DTG and DSC curves as well as MS spectra for the DVB:TEVS materials (Figures 9 and 10) and pure DVB (presented in Figures S3-S5, (Supplementary Material)) are similar. Many signals from the defragmentation of the aromatic structure of divinylbenzene are visible: water (\(m/z=18\)), vinyl group (\(m/z=27\)), ethyl group (\(m/z=29\)), benzene (\(m/z=78\)), phenyl group (\(m/z=77\)), benzyl group (\(m/z=91\)). In addition, the gaseous MS profiles of thermal degradation of the studied materials confirm the presence of triethoxyvinylsilane coupling agent (Figure S6 for DVB:TEVS = 1:1, Supplementary Material) (\(m/z=189\)) and absence of TEVS in pure polymer. Taking into consideration the TG, DTG and DSC curves obtained for the materials loaded with organic solutes (Figure 12, Figure 13, Figure 14 and Table 6) one can find small differences for various adsorbates. In the range of 170-330 \({}^{\circ}\)C the weight losses for all materials with adsorbed organic solutes are higher than in the case of pure DVB-TEVS materials (0.4-1.4%) suggesting relatively weak adsorbent-adsorbate interactions of physical nature. However, for 4-NP and P the weight loss is higher (2.6-4%) in comparison to the NB (0.7-1.3%)-containing sample. Figure 11: MS spectra of DVB:TEVS = 1:1 decomposition at 450 \({}^{\circ}\)C.  
Figure 10: 3D MS profile registered during decomposition of pure DVB:TEVS = 1:1. The TG, DTG and DSC results were completed by mass spectrometry analysis. The 3D MS profiles and MS spectra for DVB:TEVS = 1:1 with adsorbed organic substances are presented in Figures 15 and 16.