## 3 Results and Discussion
### Characteristics of Anb/C and Anb/AgNP/C Composites  
N\({}_{2}\) adsorption-desorption analysis at 77 K was performed for activated carbon samples before and after the incorporation of nitrogenous bases and silver nanoparticles. The textural properties determined from the experimental isotherms are summarized in Table 2.  
The N\({}_{2}\) adsorption-desorption isotherms for investigated systems, as well as pore size distributions (PSD) from desorption data, are presented in Figure 3. Overall, the obtained isotherms are similar in shape for all investigated samples. A strong increase in the adsorbed gas quantity in the initial range of isotherms (relative pressure below 0.03) indicates the existence of a significant amount of micropores. In this instance, the quantities of adsorbed nitrogen at 0.03 p/p\({}_{0}\) are about 260 cm\({}^{3}\)/g (STP). The significant amount of micropores even for a sample containing both Anb molecules and AgNP (Anb/AgNP/C) may suggest that micropores are not blocked by adsorbates and allow to maintain good textural properties of the carbon support. Adoption-desorption isotherms show typical H4 hysteresis loops according to slit-shaped pores. The course of adsorption isotherms suggests a combination of two types of isotherms (I and II type) rather than a well-defined single type. The shape and existence of the hysteresis loop indicate two distinct types of porosity (micro and mesopores). Figure 3B-D shows micropore-size distributions of initial and modified carbon samples. The micropore size distribution curves suggest that small micropores (below 1 nm) cover a substantial contribution in the micropores range. In all cases, the PSD functions start at very similar pores, and the first maximum according to the HK method appears at 0.5 nm. Here, similar sequences of points on the PSD curve connected with HK and NLDFT theories are observed. When BJH theory is applied for pores distribution characterization, the PSD of mesopores can be generated. Obtained PSD curves suggest that all investigated samples contained mesopores with sizes of 4 nm. In greater detail, the specific surface area of the unmodified carbon adsorbent was determined as S\({}_{\text{total}}\)=1441 m\({}^{2}\)/g with total pore volume V\({}_{\text{total}}\)=0.80 cm\({}^{3}\)/g according to the nitrogen amount adsorbed at a relative pressure p/p\({}_{0}\) of 0.99. Activated carbon RIAA was found to be highly microporous, with more than half of the pores falling on micropores. The specific surface area of micropores was impressive and equals S\({}_{\text{mic}}\)=1071 m\({}^{2}\)/g with a micropore volume of about V\({}_{\text{mic}}\)=0.49 cm\({}^{3}\)/g. After the deposition of the silver nanoparticles and further adsorption of the nitrogenous base, significant changes in the porous structure of activated carbon were observed. It should be emphasized the significant reduction of specific surface area and availability of micropores due to their blocking by larger particles of silver nanoparticles and adsorbate molecules. After the deposition of Anb and AgNP, the specific BET surface area decreased by 207 m\({}^{2}\)/g and by 234 m\({}^{2}\)/g for Anb/C and Anb/AgNP/C samples respectively. The surface areas of