Cortés-Súarez Jonathan, Celis-Arias Vanessa, Beltrán Hiram I, Tejeda-Cruz Adriana, Ibarra Ilich A, Romero-Ibarra Josué E, Sánchez-González Elí, Loera-Serna Sandra
Departamento de Ciencias Básicas, Universidad Autónoma Metropolitana-Azcapotzalco, Av. San Pablo 180, Azcapotzalco, 02200 Ciudad de México, Mexico.
Instituto de Investigaciones en Materiales and Laboratorio de Fisicoquímica y Reactividad de Superficies (LaFReS), Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito Exterior s/n, CU, Coyoacán, 04510 Ciudad de México, Mexico.
ACS Omega. 2019 Mar 13;4(3):5275-5282. doi: 10.1021/acsomega.9b00330. eCollection 2019 Mar 31.
Synthesis of a new HKUST-1 composite based on single-walled carbon nanotubes (SWCNTs) was successfully achieved (SWCNT@HKUST-1). SWCNTs were used as templates to grow rod-like HKUST-1 crystals over the surface of the nanotubes. N adsorption properties showed an increment on the surface area and pore volume for the SWCNT@HKUST-1 composite. Furthermore, the CO capture increased, from 7.92 to 8.75 mmol g at 196 K up to 100 kPa, for the SWCNT@HKUST-1 composite. This enhancement was directly associated with the increase of the surface area of the composite. Additionally, an increase in the CO heat of adsorption was estimated, from 30 to 39.1 kJ mol for the SWCNT@HKUST-1 composite. In situ Raman experiments corroborated the favored CO adsorption for the composite and provided an insight into the augmented hydrophobicity of the SWCNT@HKUST-1. Ethanol adsorption isotherms corroborated an increase in the hydrophobicity of the material upon the incorporation of carbon nanotubes.
成功合成了一种基于单壁碳纳米管（SWCNTs）的新型HKUST-1复合材料（SWCNT@HKUST-1）。SWCNTs被用作模板，在纳米管表面生长棒状HKUST-1晶体。N吸附特性表明，SWCNT@HKUST-1复合材料的表面积和孔体积有所增加。此外，在196K至100kPa条件下，SWCNT@HKUST-1复合材料的CO捕获量从7.92mmol/g增加到8.75mmol/g。这种增强直接与复合材料表面积的增加有关。此外，据估计，SWCNT@HKUST-1复合材料的CO吸附热从30kJ/mol增加到39.1kJ/mol。原位拉曼实验证实了该复合材料对CO的优先吸附，并深入了解了SWCNT@HKUST-1增强的疏水性。乙醇吸附等温线证实，加入碳纳米管后材料的疏水性增加。
