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Nanomaterials 2018, 8(4), 186; https://doi.org/10.3390/nano8040186

Porous Aluminum Oxide and Magnesium Oxide Films Using Organic Hydrogels as Structure Matrices

1
Department of Chemistry—Organic and Macromolecular Chemistry, Paderborn University, 33098 Paderborn, Germany
2
Department of Chemistry—Inorganic Functional Materials, Paderborn University, 33098 Paderborn, Germany
*
Authors to whom correspondence should be addressed.
Received: 25 February 2018 / Revised: 17 March 2018 / Accepted: 21 March 2018 / Published: 22 March 2018
(This article belongs to the Special Issue Design and Development of Nanostructured Thin Films)
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Abstract

We describe the synthesis of mesoporous Al2O3 and MgO layers on silicon wafer substrates by using poly(dimethylacrylamide) hydrogels as porogenic matrices. Hydrogel films are prepared by spreading the polymer through spin-coating, followed by photo-cross-linking and anchoring to the substrate surface. The metal oxides are obtained by swelling the hydrogels in the respective metal nitrate solutions and subsequent thermal conversion. Combustion of the hydrogel results in mesoporous metal oxide layers with thicknesses in the μm range and high specific surface areas up to 558 m2∙g−1. Materials are characterized by SEM, FIB ablation, EDX, and Kr physisorption porosimetry. View Full-Text
Keywords: mesoporous; Al2O3; MgO; poly(dimethylacrylamide); hydrogel; thin film; spin coating; SEM; FIB; Kr physisorption mesoporous; Al2O3; MgO; poly(dimethylacrylamide); hydrogel; thin film; spin coating; SEM; FIB; Kr physisorption
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Chen, Z.; Kuckling, D.; Tiemann, M. Porous Aluminum Oxide and Magnesium Oxide Films Using Organic Hydrogels as Structure Matrices. Nanomaterials 2018, 8, 186.

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