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

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31 Citations (Scopus)

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 languageEnglish
Pages (from-to)75-81
Number of pages7
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Volume414
DOIs
Publication statusPublished - 2012 Nov 20

Bibliographical note

Funding Information:
This work was supported by a National Research Foundation (NRF) grant funded by the Korean government (MEST) through the Korea CCS R&D Center, Core Research Program (2012R1A2A2A02011268) and the Basic Science Research Program (2012-008941).

All Science Journal Classification (ASJC) codes

  • Surfaces and Interfaces
  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry

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