High-throughput screening of small-molecule adsorption in MOF

被引:94
作者
Canepa, Pieremanuele [1 ]
Arter, Calvin A. [1 ]
Conwill, Eliot M. [1 ]
Johnson, Daniel H. [1 ]
Shoemaker, Brian A. [1 ]
Soliman, Karim Z. [1 ]
Thonhauser, Timo [1 ]
机构
[1] Wake Forest Univ, Dept Phys, Winston Salem, NC 27109 USA
关键词
METAL-ORGANIC FRAMEWORKS; TOTAL-ENERGY CALCULATIONS; CARBON-DIOXIDE; HIGH-CAPACITY; VIBRATIONAL PROPERTIES; HYDROGEN; DENSITY; SEPARATION; STORAGE; CO2;
D O I
10.1039/c3ta12395b
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
Using high-throughput screening coupled with state-of-the-art van der Waals density functional theory, we investigate the adsorption properties of four important molecules, H-2, CO2, CH4, and H2O in MOF-74-M with M = Be, Mg, Al, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Sr, Zr, Nb, Ru, Rh, Pd, La, W, Os, Ir, and Pt. We show that high-throughput techniques can aid in speeding up the development and refinement of effective materials for hydrogen storage, carbon capture, and gas separation. The exploration of the configurational adsorption space allows us to extract crucial information concerning, for example, the competition of water with CO2 for the adsorption binding sites. We find that only a few noble metals-Rh, Pd, Os, Ir, and Pt-favor the adsorption of CO2 and hence are potential candidates for effective carbon-capture materials. Our findings further reveal significant differences in the binding characteristics of H-2, CO2, CH4, and H2O within the MOF structure, indicating that molecular blends can be successfully separated by these nano-porous materials.
引用
收藏
页码:13597 / 13604
页数:8
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