Noble metal nanoparticles smaller than 2 nm were immobilized inside the channels of mesoporous silica via a self-assembly method using cetyltrimethylammonium chloride as a structural directing agent. This general approach can be used for integration of various precious metals into mesoporous silica matrixes of ∼30 nm to achieve better matter utilisation and higher catalytic activity.

中文翻译：

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通过自组装方法可控地将超小型贵金属纳米颗粒整合到介孔二氧化硅基质中†

通过使用十六烷基三甲基氯化铵作为结构导向剂的自组装方法，将小于2 nm的贵金属纳米颗粒固定在介孔二氧化硅的通道内。这种通用方法可用于将各种贵金属整合到约30 nm的介孔二氧化硅基质中，以实现更好的物质利用率和更高的催化活性。