Adsorptive interaction of bisphenol A with mesoporous titanosilicate/reduced graphene oxide nanocomposite materials: FT-IR and Raman analyses

Table 1 Adsorption amount at equilibrium ( q _e ) and coefficient of the pseudo-second-order model for BPA adsorption

Sample	Experimental q_e,exp(mg/g_ads)^a	Adsorption efficiency (%)^b	k(g_ads/mg · min)^c	q_e(mg/g_ads)^c	R²value^c	Surface area (m²/g)^d
MTSG-1	6.6488	36.6	0.0203	7.386	0.9934	891.3
MTSG-5	4.8821	24.6	0.1263	4.912	0.9996	804.5
MTSG-10	3.9987	22.9	0.0254	4.539	0.9863	737.8
MTSG-20	3.4748	17.4	0.0262	3.579	0.987	652.2

^aEquilibrium adsorption capacity obtained from the kinetics experiment; ^badsorption efficiency at the equilibrium state; ^cadsorption rate constant, equilibrium uptake, and correlation coefficient determined from the pseudo-second-order adsorption model (t/q_t) vs. f(t); ^dmeasured from N₂ adsorption/desorption.