Synthesis and characterization of large pore cubic mesoporous silicas functionalized with high contents of carboxylic acid groups and their use as adsorbents

- Synthesis of COOH functionalized cubic mesoporous silica (FTC-x) with large pore.
- Feasibility of the FTC-x for MB adsorption and as antidote for intoxication of paraquat.
- The adsorption kinetics follows pseudo-second-order model.
- The COOH functionalized FTC is more active than pure FTC.
- Adsorption onto FTC is controlled jointly by external and intraparticle diffusion.