Functional Mesoporous Silica Nanoparticles for the Selective Sequestration of Free Fatty Acids from Microalgal Oil
详细信息 查看全文
- 作者：Justin S. Valenstein ; Kapil Kandel ; Forrest Melcher ; Igor I. Slowing ; Victor S.-Y. Lin ; Brian G. Trewyn
- 刊名：ACS Applied Materials & Interfaces
- 出版年：2012
- 出版时间：February 22, 2012
- 年：2012
- 卷：4
- 期：2
- 页码：1003-1009
- 全文大小：402K
- 年卷期：v.4,no.2(February 22, 2012)
- ISSN：1944-8252
文摘
A series of 2d-hexagonally packed mesoporous silica nanoparticle material with 10 nm pore diameter (MSN-10) covalently functionalized with organic surface modifiers have been synthesized via a post-synthesis grafting method. The material structure has been characterized by powder X-ray diffraction, electron microscopy, and nitrogen sorption analyses, and the free fatty acid (FFA) sequestration capacity and selectivity was investigated and quantified by thermogravimetric and GC/MS analysis. We discovered that aminopropyl functionalized 10 nm pore mesoporous silica nanoparticle material (AP-MSN-10) sequestered all available FFAs and left nearly all other molecules in solution from a simulated microalgal extract containing FFAs, sterols, terpenes, and triacylglycerides. We also demonstrated selective FFA sequestration from commercially available microalgal oil.