## 3 Results
### CO\({}_{2}\) Adsorption
Regarding the temperature, during the preparation of the composite, it was found that at 90 \({}^{\circ}\)C, more modified samples showed better adsorption (two for 25 \({}^{\circ}\)C and two for 60 \({}^{\circ}\)C), whereas, for samples prepared at 60 \({}^{\circ}\)C, only two modified samples at 25 \({}^{\circ}\)C were better. Moreover, comparing the changes for each temperature of adsorption (25 \({}^{\circ}\)C or 60 \({}^{\circ}\)C), it can be seen that two of the TMOS and two of the TMON samples have better behavior at 25 \({}^{\circ}\)C, and while one of the TMOS and one of the TMON samples showed an increase in adsorption at 60 \({}^{\circ}\)C. In total, six out of twenty-four experiments of adsorption of CO\({}_{2}\) showed higher adsorptions (25%). Moreover, a broader range of adsorptions can be seen at 25 \({}^{\circ}\)C: the lowest being 0.47 mmol/g and the highest 1.67 mmol/g (a gap of 1.2 mmol/g). At 60 \({}^{\circ}\)C, the range is less than half for the same samples, where 0.33 mmol/g is the lowest, and 0.85 mmol/g is the highest (a range of 0.52 mmol/g). It can be noted that the more successful modification is the one with TMOS and then TMON. Both components gave three and three modified samples with higher adsorptions compared to the blank one; however, samples with TMOS, when comparing the modified ones, showed higher adsorptions three times at 25 \({}^{\circ}\)C vs. 1 for the TMON and three times for 60 \({}^{\circ}\)C vs. none for the TMON. Samples with TMOS have an average of 1.03 mmol/g at 25 \({}^{\circ}\)C (higher from the blank ones -1.02 mmol/g) and close at 60 \({}^{\circ}\)C (0.57 mmol/g vs. 0.63 mmol/g). They also have higher adsorption compared with the other components of modification for both experimental temperatures. (25 \({}^{\circ}\)C: TMOS > TMON > TMOSN, 1.03 mmol/g-0.81 mmol/g-0.65 mmol/g and 60 \({}^{\circ}\)C: TMOS > TMON > TMOSN, 0.57 mmol/g-0.49 mmol/g-0.41 mmol/g). In general, the different doping of rGO materials can lead to differentiation of the CO\({}_{2}\) adsorption and towards enhanced ones [46, 47, 48, 49]. Analysis of CO\({}_{2}\) Adsorption in Correlation to the Porosity and the Elemental Functionalities  
In this section, an attempt to correlate the adsorption of CO\({}_{2}\) measured with other parameters of the samples is analyzed. The adsorption of the gas to these materials is a complex procedure that is governed by different parameters. As a result of the above mentioned, Table 5 and Figure 8 show the adsorption of CO\({}_{2}\) (at 25 \({}^{\circ}\)C) for all samples (categorized per system of temperature and AsA content) to find possible trends and correlations. The last column of Table 5 shows general trends labeled with colors; green color represents the obtained highest adsorptions (0.94 mmol/g-1.67 mmol/g), orange color represents medium adsorption (0.68 mmol/g-0.86 mmol/g), and the red color represents low adsorption (0.47 mmol/g-0.60 mmol/g). Here, we discuss the correlation of the obtained adsorption of CO\({}_{2}\) values with other obtained parameters of the samples, such as porosity and elemental functionalities. The adsorption of gas in these materials is a complex procedure that depends on several parameters. The critical factor for high adsorption is based on (a) the elemental composition of these materials and (b) the porosity. This study highlights the most relevant parameters; (i) high O percentage (meaning high O functionalities), (ii) low C/(S-Si-N-O) ratio (meaning high percentages of heteroatoms), (iii) high percentage of micropores (high adsorption), (iv) possible high percentage of macropores (easy traversal of the gas towards the mesopores and micropores), (v) high SV ratio, the surface area to volume (based on the Specific area BET and total pore volume), a high SV means a high driving force to speed up thermodynamics, and (vi) dependence of the average pore size.