dc.contributor.author | Sarawade, Pradip B. | |
dc.contributor.author | Quang, Dang Viet | |
dc.contributor.author | Hilonga, Askwar | |
dc.contributor.author | Jeon, Sun Jeong | |
dc.contributor.author | Kim, Hee Taik | |
dc.date.accessioned | 2019-11-08T07:26:59Z | |
dc.date.available | 2019-11-08T07:26:59Z | |
dc.date.issued | 2012-08-15 | |
dc.identifier.uri | https://doi.org/10.1016/j.matlet.2012.04.110 | |
dc.identifier.uri | http://dspace.nm-aist.ac.tz/handle/123456789/515 | |
dc.description | Research Article published by Elsevier Volume 81, 15 August 2012 | en_US |
dc.description.abstract | Here we report the preparation of micrometer-sized highly nanoporous, relatively trasperant silica aerogel beads with high surface area as well as large pore volume with sizes ranging from 165 to 395 μm. The wet micrometer-sized silica hydrogel beads were prepared through hydrolysis and polycondensation of sodium silicate as a silica precursor. A hydrophobic micro-silica aerogel nanoporous bead was synthesized by simultaneous solvent exchange surface modification process of as synthesized micron sized silica hydrogel bead at an ambient pressure. Hydrophilic micron-sized silica aerogel beads with relatively more textural properties (surface area, pore volume and pore size) with its counterpart were obtained by heating the synthesized hydrophobic micro-silica aerogel beads at 395 °C for an hour. This study demonstrates a robust approach to high porous hydrophobic and hydrophilic micro-silica aerogel beads with a myriad of potential applications in various fileds such as catalysis, biomolecule immobilization, chromatographic separation, and CO2 absorption. This proposed synthesis, which exploits a low-cost silica source (water-glass), is suitable for large-scale industrial production of highly porous hydrophobic and hydrophilic micro-silica aerogel beads at an ambient pressure. | en_US |
dc.language.iso | en | en_US |
dc.publisher | Elsevier | en_US |
dc.subject | Micro-silica aerogel bead | en_US |
dc.subject | Ambient pressure drying | en_US |
dc.title | Synthesis and characterization of micrometer-sized silica aerogel nanoporous beads | en_US |
dc.type | Article | en_US |