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Mesoporous Silica Hybrid Membranes for Precise Size-exclusive Separation of Silver Nanoparticles by Moataz M. Mekawy; Akira Yamaguchi; Sherif A. El-Safty; Tetsuji Itoh; Norio Teramae is a Chemistry article available to read on EtoBox.

What is Mesoporous Silica Hybrid Membranes for Precise Size-exclusive Separation of Silver Nanoparticles about?

One-dimensional (1D) nanomaterials have unique applications due to their inherent physical properties. In this study, hexagonally ordered mesoporous silica hybrid anodic alumina membranes (AAM) were synthesized using template-guided synthesis with a number of nonionic n-alkyl-oligo(ethylene oxide), Brij-type (C(x)EO(y)), which are surfactants that have different molecular sizes and characteristics. The hexagonal mesoporous silicas are vertically aligned in the AAM channels with a predominantly columnar orientation. The hollow mesostructured silicas had tunable pore diameters varying from 3.7 to 5.1 nm. In this synthesis protocol, the surfactant molecular natures (corona/core features) are important for the controlled generation of ordered structures throughout AAM channels. The development of ultrafiltration membranes composed of silica mesostructures could be used effectively in separating silver nanoparticles (Ag NPs) in both aqueous and organic solution phases. This would be relevant to the production of well-defined Ag NPs with unique properties. To create a size-exclusive separation system of Ag NPs, we grafted hydrophobic trimethylsilyl (TMS) groups onto the inner pores of th

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Author

Moataz M. Mekawy; Akira Yamaguchi; Sherif A. El-Safty; Tetsuji Itoh; Norio Teramae

Publisher

Elsevier Science; Elsevier ; Elsevier Inc.; Elsevier BV (ISSN 0021-9797)

Published

2011

Language

EN

Field

Chemistry (Physical Sciences)