Simple and facile synthesis of amino functionalized hollow core–mesoporous shell silica spheres using anionic surfactant for Pb(II), Cd(II), and Zn(II) adsorption and recovery

Applications of hollow nanomaterials in environmental remediation and monitoring: A review

“…In addition, organic or inorganic functionalization can improve adsorptivity and adsorption capacity [21,23,24,27]. Wang et al [30] synthesized sym-diphenylcarbazide-functionalized silica nanotubes (SD-SNTs) through the surface modification of the SNTs by symdiphenylcarbazide and SD-SNTs showed high Pb(II) adsorption capacity as compared to SNTs, because electrostatic interactions existed in the SD-SNTs adsorption process in addition to chelating interactions.…”

“…Overall, the adsorption capacity toward certain HMIs is affected not only by the nanomaterial properties, but also by the initial HMI concentration [23] as shown in Table 1. At a low initial HMI concentration, the equilibrium adsorption uptake of the adsorbents improved significantly with increasing initial HMI concentration, because the adsorption was a diffusion based process.…”

Preparation of silica mesoporous nanoparticles functionalized with β-cyclodextrin and its application for methylene blue removal

“…After that it was placed in an oven in 120°C. Then to remove unreacted APTS the obtained precipitate was mixed with 50 mL water and stirred for 30 min and dried at 100°C [32].…”

Core–nanoshell magnetic composite material for adsorption of Pb(II) in wastewater

“…There has been extensive research due to the combined functionalities of core and shell in various fields [16]. Compared to activated carbon and other traditional adsorbents, core-nanoshell magnetic composite material is cost-effective and can be recycled.…”