Hydrogen storage materials protected by a polymer shell

被引：16

作者：

Borodina, Tatiana ^{[1
]}

Grigoriev, Dmitry ^{[1
]}

Moehwald, Helmuth ^{[1
]}

Shchukin, Dmitry ^{[1
]}

机构：

[1] Max Planck Inst Colloids & Interfaces, D-14424 Potsdam, Germany

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2010年 / 20卷 / 08期

关键词：

AMORPHOUS POLYSTYRENE; INFRARED-SPECTRA; MEMBRANES; ECONOMY;

D O I：

10.1039/b920470a

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A simple approach for the protection of hydrogen storage materials is based on interfacial polymer precipitation induced by solvent evaporation. Sodium borohydride is successfully protected with a polystyrene shell by co-precipitation. This shell provides a hydrophobic barrier for water diffusion into the container interior. Simultaneous nucleation of sodium borohydride inside the droplets of the disperse phase and formation of a surrounding polystyrene shell during gradual solvent evaporation led to the development of structures consisting of a sodium borohydride core and a polymer shell. Confocal fluorescence microscopy, scanning electron microscopy and transmission electron microscopy reveal the crystalline interior and polymer shell of the fabricated microcontainers. FTIR spectroscopy proves the presence of a sodium borohydride core and a polystyrene shell. The stability of sodium borohydride microcontainers is increased as compared to the unprotected material by 2.5 times during storage at 100% humidity.

引用

页码：1452 / 1456

页数：5

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