The Synthesis and Characterization of Low-cost Mesoporous Silica SiO2 from Local Pumice Rock
Pumice is a porous volcanic rock containing a significant proportion of silica and alumina, and which has a low iron content. This natural, silica-rich material attracts wide attention because of its applications in adsorption process‐ es, heterogeneous catalysis and nanotechnology. In this contribu...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2015-12-01
|
| Series: | Nanomaterials and Nanotechnology |
| Subjects: | |
| Online Access: | http://www.intechopen.com/journals/nanomaterials_and_nanotechnology/the-synthesis-and-characterization-of-low-cost-mesoporous-silica-sio2-from-local-pumice-rock |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849470951674085376 |
|---|---|
| author | Asmaa Mourhly Mariam Khachani Adnane El Hamidi Mohammed Kacimi Mohammed Halim Said Arsalane |
| author_facet | Asmaa Mourhly Mariam Khachani Adnane El Hamidi Mohammed Kacimi Mohammed Halim Said Arsalane |
| author_sort | Asmaa Mourhly |
| collection | DOAJ |
| description | Pumice is a porous volcanic rock containing a significant proportion of silica and alumina, and which has a low iron content. This natural, silica-rich material attracts wide attention because of its applications in adsorption process‐ es, heterogeneous catalysis and nanotechnology. In this contribution, the white amorphous silica nanoparticles were extracted using an optimized alkaline treatment and an acid-precipitation process using grey pumice powder. The isolated amorphous silica SiO2 was characterized via X-Ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), Transmission Electronic Microscopy (TEM-EDS), N2 adsorption/desorption measurements and simultaneous Thermal Gravimetry/Differential Thermal Analysis (TG/DTA). The obtained results indicated that the nanosilica powder was successfully prepared via the acid- base route with a predominantly amorphous mesoporous structure having a high surface area (422m2/g). The TEM images exhibited relatively homogeneous dispersed nanosilica particles with small sizes about 5–15 nm, in accordance with XRD data. Thermal analysis of the silica powder under air atmosphere showed total mass losses of 6.5%, with endothermic effects corresponding to the
removal of water molecules and the OH of silanol groups contained in the material. The investigations performed in this work have indicated that there is great scope for pumice exploitation as a raw material in the production of amorphous silica nanopowder on large scale. |
| format | Article |
| id | doaj-art-da652ec6d7324393b636b240939167e5 |
| institution | Kabale University |
| issn | 1847-9804 |
| language | English |
| publishDate | 2015-12-01 |
| publisher | Wiley |
| record_format | Article |
| series | Nanomaterials and Nanotechnology |
| spelling | doaj-art-da652ec6d7324393b636b240939167e52025-08-20T03:24:59ZengWileyNanomaterials and Nanotechnology1847-98042015-12-01535http://dx.doi.org/10.5772/6203349682The Synthesis and Characterization of Low-cost Mesoporous Silica SiO2 from Local Pumice RockAsmaa MourhlyMariam KhachaniAdnane El HamidiMohammed KacimiMohammed HalimSaid ArsalanePumice is a porous volcanic rock containing a significant proportion of silica and alumina, and which has a low iron content. This natural, silica-rich material attracts wide attention because of its applications in adsorption process‐ es, heterogeneous catalysis and nanotechnology. In this contribution, the white amorphous silica nanoparticles were extracted using an optimized alkaline treatment and an acid-precipitation process using grey pumice powder. The isolated amorphous silica SiO2 was characterized via X-Ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), Transmission Electronic Microscopy (TEM-EDS), N2 adsorption/desorption measurements and simultaneous Thermal Gravimetry/Differential Thermal Analysis (TG/DTA). The obtained results indicated that the nanosilica powder was successfully prepared via the acid- base route with a predominantly amorphous mesoporous structure having a high surface area (422m2/g). The TEM images exhibited relatively homogeneous dispersed nanosilica particles with small sizes about 5–15 nm, in accordance with XRD data. Thermal analysis of the silica powder under air atmosphere showed total mass losses of 6.5%, with endothermic effects corresponding to the removal of water molecules and the OH of silanol groups contained in the material. The investigations performed in this work have indicated that there is great scope for pumice exploitation as a raw material in the production of amorphous silica nanopowder on large scale.http://www.intechopen.com/journals/nanomaterials_and_nanotechnology/the-synthesis-and-characterization-of-low-cost-mesoporous-silica-sio2-from-local-pumice-rockPumice rockAmorphous silicaNanoparticlesSurface area |
| spellingShingle | Asmaa Mourhly Mariam Khachani Adnane El Hamidi Mohammed Kacimi Mohammed Halim Said Arsalane The Synthesis and Characterization of Low-cost Mesoporous Silica SiO2 from Local Pumice Rock Nanomaterials and Nanotechnology Pumice rock Amorphous silica Nanoparticles Surface area |
| title | The Synthesis and Characterization of Low-cost Mesoporous Silica SiO2 from Local Pumice Rock |
| title_full | The Synthesis and Characterization of Low-cost Mesoporous Silica SiO2 from Local Pumice Rock |
| title_fullStr | The Synthesis and Characterization of Low-cost Mesoporous Silica SiO2 from Local Pumice Rock |
| title_full_unstemmed | The Synthesis and Characterization of Low-cost Mesoporous Silica SiO2 from Local Pumice Rock |
| title_short | The Synthesis and Characterization of Low-cost Mesoporous Silica SiO2 from Local Pumice Rock |
| title_sort | synthesis and characterization of low cost mesoporous silica sio2 from local pumice rock |
| topic | Pumice rock Amorphous silica Nanoparticles Surface area |
| url | http://www.intechopen.com/journals/nanomaterials_and_nanotechnology/the-synthesis-and-characterization-of-low-cost-mesoporous-silica-sio2-from-local-pumice-rock |
| work_keys_str_mv | AT asmaamourhly thesynthesisandcharacterizationoflowcostmesoporoussilicasio2fromlocalpumicerock AT mariamkhachani thesynthesisandcharacterizationoflowcostmesoporoussilicasio2fromlocalpumicerock AT adnaneelhamidi thesynthesisandcharacterizationoflowcostmesoporoussilicasio2fromlocalpumicerock AT mohammedkacimi thesynthesisandcharacterizationoflowcostmesoporoussilicasio2fromlocalpumicerock AT mohammedhalim thesynthesisandcharacterizationoflowcostmesoporoussilicasio2fromlocalpumicerock AT saidarsalane thesynthesisandcharacterizationoflowcostmesoporoussilicasio2fromlocalpumicerock AT asmaamourhly synthesisandcharacterizationoflowcostmesoporoussilicasio2fromlocalpumicerock AT mariamkhachani synthesisandcharacterizationoflowcostmesoporoussilicasio2fromlocalpumicerock AT adnaneelhamidi synthesisandcharacterizationoflowcostmesoporoussilicasio2fromlocalpumicerock AT mohammedkacimi synthesisandcharacterizationoflowcostmesoporoussilicasio2fromlocalpumicerock AT mohammedhalim synthesisandcharacterizationoflowcostmesoporoussilicasio2fromlocalpumicerock AT saidarsalane synthesisandcharacterizationoflowcostmesoporoussilicasio2fromlocalpumicerock |