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

被引：44

作者：

Jeon, Harim ^{[1
]}

Min, Yoon Jae ^{[2
]}

Ahn, Sung Hoon ^{[1
]}

Hong, Seok-Min ^{[2
]}

Shin, Jong-Shik ^{[3
]}

Kim, Jong Hak ^{[1
]}

Lee, Ki Bong ^{[2
]}

机构：

[1] Yonsei Univ, Dept Chem & Biomol Engn, Seoul 120749, South Korea

[2] Korea Univ, Dept Chem & Biol Engn, Seoul 136713, South Korea

[3] Yonsei Univ, Dept Biotechnol, Seoul 120749, South Korea

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2012年 / 414卷

基金：

新加坡国家研究基金会;

关键词：

CO2; adsorption; Porous material; Sol-gel process; Graft copolymer; Magnesium oxide; Titanium oxide; CARBON-DIOXIDE CAPTURE; ACTIVATED CARBON; PRESSURE; WATER; ACID;

D O I：

10.1016/j.colsurfa.2012.08.009

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Mesoporous mixed oxide nanoparticles consisting of MgO and TiO2 were synthesized via a sot-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 (0.477 mol 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. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：75 / 81

页数：7

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