Mesostructured SiO2-Based Nanocontainers Synthesized on a Functional Template: Capacity and Rate of Unloading
Mesostructured SiO2-Based Nanocontainers Synthesized on a Functional Template: Capacity and Rate of Unloading
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DOI：
10.1134/s1061933x16010051
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发表时间：
2016-01-01
期刊：
影响因子：
1.1
通讯作者：
Rudoy, V. M.
中科院分区：
文献类型：
--
作者：
Dement'eva, O. V.;Senchikhin, I. N.;Rudoy, V. M.
提出了一种模板合成介孔结构pH敏感型二氧化硅纳米容器的新方法。该方法结合了纳米容器的合成阶段及其与目标功能物质的负载。以介孔二氧化硅纳米颗粒为模型，研究了在静态和准动态条件下，不同pH值下纳米容器的结构、容量和卸荷速率。以十六烷基三甲基溴化铵胶束为模板合成了纳米粒子。在此基础上，提出了十六烷基三甲基铵阳离子从SiO_2纳米容器释放到水介质中的机理。
A new approach to template synthesis of mesostructured pH-sensitive SiO2 nanocontainers is developed. The approach combines the stages of synthesis of the nanocontainers and their loading with a targeted functional substance. The structure, capacity, and the rate of "unloading" of the nanocontainers at different pH values of an aqueous medium under static and quasi-dynamic conditions are studied using mesoporous SiO2 nanoparticles as a model. Nanoparticles are synthesized using the micelles of cetyltrimethylammonium bromide as templates. Based on the obtained information, a mechanism is proposed for release of cetyltrimethylammonium cations from SiO2 nanocontainers into the aqueous medium.