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

Abstract

Template free route for hybrid silica nanoparticles with~500 m 2 .g −1 surface area.• Cocondensation of a nonsilane precursor to achieve phosphonic acid functionality. • Silica nanoparticles displayed highMethylene blue adsorption (380 mg. g −1 ). • This method broaden the precursor selection for mesoporous silica synthesis.

A Comprehensive Review of Synthesis, Applications and Future Prospects for Silica Nanoparticles (SNPs)

“…The developed particles consisted 3 types based on NaOH concentration used. The results indicated that the particles involving higher NaOH concentrations showed higher removal efficiencies (Figure 7) [141]. Similarly, in the second study, rice husk was used as a raw material to synthesize amine modified silica nanoparticles using sol-gel route.…”

“…SNPs based MIPs system resulted in improved binding, enhanced RhB detection and superior affinity for RhB. In terms of removing methylene blue, the recent studies by Parida et al [141] and Leshan et al [64] are worth mentioning. In the first study, researchers developed functionalized MSNs via one-pot synthesis scheme using phosphate based nonsilane precursor.…”

“…In this respect, the study [167] developed SNPs coupled with Ag particles as an antifouling adsorbent for effective dye removal and water disinfection. In this respect, few of the most recent works include hybrid SNPs with functionalized mesostructured for methylene blue removal [141] and polysulfone membrane with carbon dots grafted silica for dye removal [168] respectively.…”

“…Figure7N2 adsorption-desorption isotherm of (c) 0SiO2, (d) 1SiO2 and (e) 2SiO2. Open Access Ref [141]. …”

Understanding the mechanism and kinetics of the formation and breaking of ring structures during silica polymerization: a computational study

“…[31][32][33] The smaller ring structure imparts rigidity to the framework, which helps in retaining the overall morphology of the porous materials. While rings are prominent in crystalline materials such as zeolites, [9][10][11] they are also formed in amorphous glasses, [34][35][36] gels (aerogels, 7,8 alcogels, 37,38 and hydrogels [4][5][6] ), nanoparticles, [1][2][3] and mesoporous materials, [12][13][14] playing a vital role in their applications. Therefore, the formation and retention of appropriate ring sizes in porous materials are quintessential for their successful application.…”