Abstract
Mesoporous mixed oxide nanoparticles consisting of MgO and TiO2 were synthesized via a sol-gel process by templating poly(vinyl chloride)-g-poly(oxyethylene methacrylate) (PVC-g-POEM) graft copolymer. The mesoporous structures and morphologies of the MgO/TiO2 mixed oxides were characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM) and nitrogen adsorption/desorption analysis. Interestingly, MgO/TiO2 mixed oxide exhibited much higher CO2 adsorption capacity (0.477mol CO2/kg sorbent for 40:60 MgO/TiO2) than pure MgO (0.074) or TiO2 (0.063). This result arises from the increase in surface area and pore volume of the mixed oxide due to the formation of bimodal pores.
Original language | English |
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Pages (from-to) | 75-81 |
Number of pages | 7 |
Journal | Colloids and Surfaces A: Physicochemical and Engineering Aspects |
Volume | 414 |
DOIs | |
Publication status | Published - 2012 Nov 20 |
Keywords
- Graft copolymer
- Magnesium oxide
- Porous material
- Sol-gel process
- Titanium oxide
ASJC Scopus subject areas
- Surfaces and Interfaces
- Physical and Theoretical Chemistry
- Colloid and Surface Chemistry