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Liang You, Tianyi Wang and Prof. Jianping Ge When Mesoporous Silica Meets the Alkaline Polyelectrolyte: A Controllable Synthesis of Functional and Hollow Nanostructures with a Porous Shell Chemistry - A European Journal 19

Version of Record online: 3 DEC 2012 | DOI: 10.1002/chem.201203308

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Meeting of minds: An improved surface-protected etching method by using mesoporous silica as the template and an alkaline polyelectrolyte as both the protecting and etching agent was developed to prepare a SiO2 nanotube with a porous shell (see scheme). The polyelectrolytes attached to the template not only create a localized alkaline environment, but also effectively protect the silica surface, whereas the mesopore channels accelerate the diffusion of etchant throughout the template. These actions facilitate the formation of hollow structures in a fully controllable manner.

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