Low Temperature Synthesized H2 Ti3 O7 Nanotubes with a High CO2 Adsorption Property by Amine Modification

Langmuir : the ACS Journal of Surfaces and Colloids
Misaki OtaNorikazu Nishiyama

Abstract

Carbon dioxide (CO2) capture and storage (CCS) technologies have been attracting attention in terms of tackling with global warming. To date, various CO2 capture technologies including solvents, membranes, cryogenics, and solid adsorbents have been proposed. Currently, a liquid adsorption method for CO2 using amine solution (monoethanolamine) has been practically used. However, this liquid phase CO2 adsorption process requires heat regeneration, and it can cause many problems such as corrosion of equipment and degradation of the solution. Meanwhile, solid adsorption methods using porous materials are more advantageous over the liquid method at these points. In this context, we here evaluated if hydrogen titanate (H2Ti3O7) nanotubes and the surface modification effectively capture CO2. For this aim, we first developed a facile synthesis method of H2Ti3O7 nanotubes different from any conventional methods. Briefly, they were converted from the precursors-amorphous TiO2 nanoparticles at room temperature (25 °C). We then determined the outer and the inner diameters of the H2Ti3O7 nanotubes as 3.0 and 0.7 nm, respectively. It revealed that both values were much smaller than the reported ones; thus the specific surface area showed the...Continue Reading

References

Aug 1, 2002·Acta Crystallographica. Section B, Structural Science·Q ChenL -M Peng
May 4, 2005·Nature Materials·Antonino Salvatore AricòWalter van Schalkwijk
Aug 11, 2007·Journal of Hazardous Materials·Chung-Kung LeeShui-Hung Hung
Aug 23, 2012·Journal of Colloid and Interface Science·Jie LiuXiaole Weng
Apr 26, 2014·Chemical Communications : Chem Comm·Jie YangMingdeng Wei

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