abstract

• Ag pillared interlayered clays (Ag-PILCs) were synthesized through a novel method, in which Ag nanoparticles were formed in montmorillonite interlayers. In this method, silver ions were first exchanged into montmorillonite interlayers, and then reduced into Ag nanoparticles by trisodium citrate at 100°C in aqueous solutions. The synthesized Ag%40montmorillonite nanocomposite was characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM), and its surface area was evaluated by using Brunauer-Emmet-Teller (BET) method. Compared to traditional PILCs synthesized through ion exchange method, the formed Ag-PILCs had better thermal stability and stronger structure because their pillars are nanoparticles. Furthermore, this method introduces a possibility to control the size of the pillars and thus the pore size of the PILCs, due to that the nanoparticle pillars can be modified on their forms and diameters in the synthesizing process. Also, it was found that the intercalating Ag nanoparticle pillars were formed at restricted pH values and silver ion concentrations. © 2015 World Scientific Publishing Company.
• Ag pillared interlayered clays (Ag-PILCs) were synthesized through a novel method, in which Ag nanoparticles were formed in montmorillonite interlayers. In this method, silver ions were first exchanged into montmorillonite interlayers, and then reduced into Ag nanoparticles by trisodium citrate at 100°C in aqueous solutions. The synthesized Ag@montmorillonite nanocomposite was characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM), and its surface area was evaluated by using Brunauer-Emmet-Teller (BET) method. Compared to traditional PILCs synthesized through ion exchange method, the formed Ag-PILCs had better thermal stability and stronger structure because their pillars are nanoparticles. Furthermore, this method introduces a possibility to control the size of the pillars and thus the pore size of the PILCs, due to that the nanoparticle pillars can be modified on their forms and diameters in the synthesizing process. Also, it was found that the intercalating Ag nanoparticle pillars were formed at restricted pH values and silver ion concentrations. © 2015 World Scientific Publishing Company.

authors

• López Valdivieso Alejandro
• Rao F.
• Song S.

publication date

• 2015-01-01

funding provided via

• Fondo Nacional de Ciencia y Tecnología, FONACYT: 155148  Grant
• National Natural Science Foundation of China, NSFC: 51474167  Grant

published in

• Nano  Journal

keywords

• Ag nanoparticles; Ag@montmorillonite; PILC; porous structure Clay minerals; Ion exchange; Ions; Metal ions; Nanocomposites; Nanoparticles; Pore size; Synthesis (chemical); Transmission electron microscopy; X ray diffraction; Ag nanoparticle; Brunauer-emmet-teller methods; Montmorillonite interlayer; Montmorillonite nanocomposites; PILC; Pillared inter-layered clays; Porous structures; Synthesis and characterizations; Silver

Digital Object Identifier (DOI)

• 10.1142/S1793292015500319

start page

end page

volume

• 10

issue

• 2