Figure 4. Closer view of uptake curves of 113, 266, 1130 and 10400 ppbv CH3I adsorptions on Ag0-Aerogel for up to 288 hours.

Model Fitting Result

The 1st order SCM was used to fit the kinetic data to determine Dp and ks in Eq. 3 and 4. To average the weights of different sections in the adsorption curves and increase the accuracy of data fitting, t ’s were rescaled by log10 before applying the least square regressions. More specifically, was used instead of , which f is Eq. 1-4, subscript i is the number of experimental data andexp is the indication of experimental data.
The model-fitting results and parameters are shown in Table 1.kf , calculated theoretically to be 5.99 cm/s by applying Eq. 6-9, kept constant at 4 different concentrations;Dp and ks were determined in model fitting and AARD is calculated using , wheremodel indicates model fitting result and N is the number of data points.