The DOI matches its Crossref record; 14 of the 14 references it cites were found in a registry or an index.
Permeable Silica Shell through Surface-Protected Etching
Abstract
We describe a "surface-protected etching" strategy that allows convenient conversion of sol-gel derived silica into porous structures. Poly(vinyl pyrrolidone) is used to protect the near surface layer, and NaOH is used to selectively etch the interior of the silica spheres. Etching initially yields porous structures and eventually removes the core to leave behind hollow silica spheres with porous shells. This strategy is useful for constructing core-shell systems where active nanomaterials are embedded in silica shell for enhanced stability against aggregation. We experimentally demonstrate use of the surface-protected etching approach to create openings on silica shells; these openings allow dissolved chemical species to reach embedded catalytic particles to be chemically transformed while the porous shells continue to act as effective barriers against aggregation and loss of activity of the core particles. We also show that, by controlling the extent of etching, it is possible to control the permeation rate of the chemical species through the shells.
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Cites
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Synthesis of Nanosized Gold−Silica Core−Shell Particles
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Self-citationA Nanoreactor Framework of a Au@SiO2 Yolk/Shell Structure for Catalytic Reduction of p‐Nitrophenol
Lee, J., Park, J. C., & Song, H. (2008) · Advanced Materials · doi:10.1002/adma.200702338 · Cited by 895
The Catalytic Activity of “Naked” Gold Particles
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High‐Temperature‐Stable Catalysts by Hollow Sphere Encapsulation
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High‐Temperature‐Stable Catalysts by Hollow Sphere Encapsulation
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Preparation and properties of uniform coated colloidal particles. VII. Silica on hematite
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Cited by
Synthesis, Properties, and Applications of Hollow Micro-/Nanostructures
Wang, X., Feng, J., Bai, Y., Zhang, Q., & Yin, Y. (2016) · Chemical Reviews · doi:10.1021/acs.chemrev.5b00731 · Cited by 1,456
Self-citationEncapsulated Metal Nanoparticles for Catalysis
Gao, C., Lyu, F., & Yin, Y. (2021) · Chemical Reviews · doi:10.1021/acs.chemrev.0c00237 · Cited by 855
Self-citationRecent Progress on Silica Coating of Nanoparticles and Related Nanomaterials
Guerrero‐Martínez, A., Pérez‐Juste, J., & Liz‐Marzán, L. M. (2010) · Advanced Materials · doi:10.1002/adma.200901263 · Cited by 771
Li, X., Zhang, F., & Zhao, D. (2015) · Chemical Society Reviews · doi:10.1039/c4cs00163j · Cited by 615
Core–Shell Nanostructured Catalysts
Zhang, Q., Lee, I., Joo, J. B., Zaera, F., & Yin, Y. (2013) · Accounts of Chemical Research · doi:10.1021/ar300230s · Cited by 586
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Metadata
- Authors
- Zhang, Q., Zhang, T., Ge, J., & Yin, Y.
- Venue
- Nano Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2008-08-12
- Volume
- 8
- Issue
- 9
- Pages
- 2867-2871
- ISSN
- 1530-6984 (ISSN-L)
- 1530-6992
- OpenAlex
- W2077891697
- Cited by
- 607
- References
- 14
- FWCI
- 14.65
- Type
- journal article
- Language
- en
- Open access
- closed
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- Zhang, Q., Zhang, T., Ge, J., & Yin, Y. (2008). Permeable Silica Shell through Surface-Protected Etching. Nano Letters. https://doi.org/10.1021/nl8016187
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
