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Architecture yolk-shell structured mesoporous silica nanospheres for catalytic applications

Abstract

We report the design and realization of yolk-shell structured nanospheres with periodic mesoporous organosilica (PMO) nanospheres or noble metal nanoparticles encapsulated in mesoporous silica shells via a selected etching method. These architectures are well controlled in structure, size and morphology. The yolk-shell structured PMO@SiO2 nanoparticles can be precisely functionalized with different catalytic functionalities even incompatible acidic and basic groups: PMO core with amino (-NH2) groups and mesoporous silica shell with sulfonic acid (-SO3H) groups. As a nanoreactor, the as-synthesized Au@SiO2 nanospheres show faster reduction of 4-nitrophenol than nitrobenzene. Furthermore, the prepared PMO-NH2@SiO2-SO3H nanoparticles can be used as bifunctional catalysts with highly efficient catalytic performance for catalyzing the deacetalization-Henry cascade reaction.

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Publication details

The article was accepted on 10 Jun 2018 and first published on 12 Jun 2018


Article type: Paper
DOI: 10.1039/C8DT02254B
Citation: Dalton Trans., 2018, Accepted Manuscript
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    Architecture yolk-shell structured mesoporous silica nanospheres for catalytic applications

    X. Wang, Y. He, Y. Ma, J. Liu, Y. Liu, Z. Qiao and Q. Huo, Dalton Trans., 2018, Accepted Manuscript , DOI: 10.1039/C8DT02254B

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