Graft copolymer templated synthesis of mesoporous MgO/TiO2 mixed oxide nanoparticles and their CO2 adsorption capacities

Harim Jeon, Yoon Jae Min, Sung Hoon Ahn, Seok Min Hong, Jong Shik Shin, Jong Hak Kim, Ki Bong Lee

Research output: Contribution to journalArticlepeer-review

36 Citations (Scopus)


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 languageEnglish
Pages (from-to)75-81
Number of pages7
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Publication statusPublished - 2012 Nov 20


  • 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


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