Efficient Fabrication of Nanoporous Si and Si/Ge Enabled by a Heat Scavenger in Magnesiothermic Reactions
Scientific Reports2013Vol. 3(1), pp. 2222–2222
Citations Over TimeTop 10% of 2013 papers
Wei Luo, Xingfeng Wang, Colin Meyers, Nick Wannenmacher, Weekit Sirisaksoontorn, Michael M. Lerner, Xiulei Ji
Abstract
Magnesiothermic reduction can directly convert SiO2 into Si nanostructures. Despite intense efforts, efficient fabrication of highly nanoporous silicon by Mg still remains a significant challenge due to the exothermic reaction nature. By employing table salt (NaCl) as a heat scavenger for the magnesiothermic reduction, we demonstrate an effective route to convert diatom (SiO2) and SiO2/GeO2 into nanoporous Si and Si/Ge composite, respectively. Fusion of NaCl during the reaction consumes a large amount of heat that otherwise collapses the nano-porosity of products and agglomerates silicon domains into large crystals. Our methodology is potentially competitive for a practical production of nanoporous Si-based materials.
Related Papers
- → Numerical simulations of diametrical compression tests on agglomerates(2004)94 cited
- → Architectural and mechanical performances of carbon nanotube agglomerates characterized by compaction response(2011)9 cited
- → Formation of Nanoporous Structure on Pt Plate Surface by Alloying/Dealloying Technique(2011)4 cited
- → The Dynamic Shape Factors of Close Packed Agglomerates and Hollow Agglomerates.(1995)2 cited
- → Nanoporous Metal Template Methods(2022)