| dc.creator |
Elma, Muthia |
|
| dc.date.accessioned |
2020-06-15T04:02:13Z |
|
| dc.date.available |
2020-06-15T04:02:13Z |
|
| dc.identifier |
http://eprints.ulm.ac.id/6032/1/2019_ME_fabrication___.pdf |
|
| dc.identifier |
Elma, Muthia Fabrication of interlayer-free silica-based membranes – effect of low calcination temperature using an organo-catalyst. Membrane Technology . |
|
| dc.identifier.uri |
https://repo-dosen.ulm.ac.id//handle/123456789/12575 |
|
| dc.description |
Communities in some wetland areas in South Kalimantan, Indonesia, find it
difficult to access clean water because surface water is contaminated by saltwater
intrusion, especially during the rainy season. Membrane technology provides a
solution to this problem by removing the salt contained in the raw water. The
membranes used are generally composed of a porous material – thin-film – medium
that functions to separate particles with a specific molecular size from the solution.
The purpose of this study is to synthesise and fabricate silica-based membranes
using an organo-catalyst calcined at a low calcination temperature (200°C and
250°C) through rapid thermal processing. In order to fabricate these membranes,
the sol–gel method was applied, using tetraethyl orthosilicate as the silica precursor and citric acid as an organo-catalyst (refluxed at 0°C and 50°C). The results
show that all membranes prepared with the organo-catalyst produce mesoporous
structures. The highest surface area and pore size achieved were 354 m²/g and
0.215 cm³/g, respectively, refluxed at 0°C. Furthermore, silica-based membranes
calcined at 250°C showed lower silanol concentration compared with those calcined at 200°C. In addition, the organo-catalyst (citric acid) acts as a carbon source
in the silica matrices and may increase the hydrostability of the silica networks. |
|
| dc.format |
text |
|
| dc.relation |
https://www.sciencedirect.com/science/article/pii/S0958211819300370 |
|
| dc.relation |
http://eprints.ulm.ac.id/6032/ |
|
| dc.subject |
QD Chemistry |
|
| dc.title |
Fabrication of interlayer-free silica-based membranes – effect
of low calcination temperature using an organo-catalyst |
|
| dc.type |
Article |
|
| dc.type |
PeerReviewed |
|