Template-free synthesis of hybrid silica nanoparticle with functionalized mesostructure for efficient methylene blue removal

A simple one-pot synthesis process for functionalized mesostructured silica nanoparticles (MSNP) is reported. The novel demonstrated the possibility to achieve MSNP with a surface area up 501 m2.g−1 using phosphonate based nonsilane precursor such as N, N´-bis[4,6-bis(diethylphosphono)-1,3,5-triazin-yl]-1,2-diaminoethane (ED). obtained by 20 mol% of ED achieved 80 and increasing content 30 resulted in m2.g−1. Zeta potential MSNPs (−65.5 70.0 mV) were much higher than nanoparticle (NP) prepared from only TEOS (−49 mV), indicating presence large number –SiOH phosphonic acid functional groups, confirmed Fourier-transform infrared spectroscopy (FT-IR) Nuclear magnetic resonance (NMR) analysis. used an adsorbent removal cationic pollutants like methylene blue (MB). highest porosity displayed favorable MB adsorption behavior ~380 mg.g−1 capacity. Facile regeneration acidic medium (~pH 4.5) easy recyclability (10 cycles) practical applicability this MSNPs.