Synthesis and characterization of micrometer-sized silica aerogel nanoporous beads
| dc.creator | Sarawade, Pradip B. | |
| dc.creator | Quang, Dang Viet | |
| dc.creator | Hilonga, Askwar | |
| dc.creator | Jeon, Sun Jeong | |
| dc.creator | Kim, Hee Taik | |
| dc.date | 2019-11-08T07:26:59Z | |
| dc.date | 2019-11-08T07:26:59Z | |
| dc.date | 2012-08-15 | |
| dc.date.accessioned | 2022-10-25T09:24:33Z | |
| dc.date.available | 2022-10-25T09:24:33Z | |
| dc.description | Research Article published by Elsevier Volume 81, 15 August 2012 | |
| dc.description | 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. | |
| dc.format | application/pdf | |
| dc.identifier | https://doi.org/10.1016/j.matlet.2012.04.110 | |
| dc.identifier | http://dspace.nm-aist.ac.tz/handle/123456789/515 | |
| dc.identifier.uri | http://hdl.handle.net/123456789/95554 | |
| dc.language | en | |
| dc.publisher | Elsevier | |
| dc.subject | Micro-silica aerogel bead | |
| dc.subject | Ambient pressure drying | |
| dc.title | Synthesis and characterization of micrometer-sized silica aerogel nanoporous beads | |
| dc.type | Article |