Graft copolymer templated synthesis of mesoporous MgO/TiO 2 mixed oxide nanoparticles and their CO 2 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 journalArticle

29 Citations (Scopus)

Abstract

Mesoporous mixed oxide nanoparticles consisting of MgO and TiO 2 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/TiO 2 mixed oxides were characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM) and nitrogen adsorption/desorption analysis. Interestingly, MgO/TiO 2 mixed oxide exhibited much higher CO 2 adsorption capacity (0.477mol CO 2/kg sorbent for 40:60 MgO/TiO 2) than pure MgO (0.074) or TiO 2 (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
Volume414
DOIs
Publication statusPublished - 2012 Nov 20

Fingerprint

Graft copolymers
Carbon Monoxide
Oxides
Nanoparticles
Adsorption
Sorbents
Sol-gel process
Desorption
Nitrogen
Transmission electron microscopy
X ray diffraction
Scanning electron microscopy

Keywords

  • CO adsorption
  • Graft copolymer
  • Magnesium oxide
  • Porous material
  • Sol-gel process
  • Titanium oxide

ASJC Scopus subject areas

  • Colloid and Surface Chemistry

Cite this

Graft copolymer templated synthesis of mesoporous MgO/TiO 2 mixed oxide nanoparticles and their CO 2 adsorption capacities. / Jeon, Harim; Min, Yoon Jae; Ahn, Sung Hoon; Hong, Seok Min; Shin, Jong Shik; Kim, Jong Hak; Lee, Ki Bong.

In: Colloids and Surfaces A: Physicochemical and Engineering Aspects, Vol. 414, 20.11.2012, p. 75-81.

Research output: Contribution to journalArticle

Jeon, Harim ; Min, Yoon Jae ; Ahn, Sung Hoon ; Hong, Seok Min ; Shin, Jong Shik ; Kim, Jong Hak ; Lee, Ki Bong. / Graft copolymer templated synthesis of mesoporous MgO/TiO 2 mixed oxide nanoparticles and their CO 2 adsorption capacities. In: Colloids and Surfaces A: Physicochemical and Engineering Aspects. 2012 ; Vol. 414. pp. 75-81.
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AU - Hong, Seok Min

AU - Shin, Jong Shik

AU - Kim, Jong Hak

AU - Lee, Ki Bong

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AB - Mesoporous mixed oxide nanoparticles consisting of MgO and TiO 2 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/TiO 2 mixed oxides were characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM) and nitrogen adsorption/desorption analysis. Interestingly, MgO/TiO 2 mixed oxide exhibited much higher CO 2 adsorption capacity (0.477mol CO 2/kg sorbent for 40:60 MgO/TiO 2) than pure MgO (0.074) or TiO 2 (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.

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