Hybrid metal-organic framework nanomaterials with enhanced carbon dioxide and methane adsorption enthalpy by incorporation of carbon nanotubes

• A composite material by incorporating MWCNTs into MOF nanoparticles (JUC-32) were synthesized successfully in situ.
• The presence of carboxyl decorated on the MWCNTs promoted the nuclearity and growth of JUC-32 nanocrystals on their surfaces.
• The adsorption enthalpies of CO2 and CH4 for hybrid materials had significantly increased compared with the original JUC-32.

Two hybrid materials composed of metal-organic framework (JUC-32) nanoparticles and carboxyl-modified multi-wall carbon nanotubes (MWCNTs) were synthesised successfully in situ and characterized by TEM, PXRD, and TGA. The gas adsorption properties of these two hybrid materials were compared with the original JUC-32 material and a physical mixture of JUC-32 and MWCNTs. The results indicated that the composite materials absorbed larger amounts of CO2 and CH4 per specific surface area than the original materials, and that the adsorption enthalpies of CO2 and CH4 had significantly increased.

Two hybrid materials composed of metal-organic framework (named JUC-32, JUC = Jilin University, China) nanoparticles and carboxyl-modified multi-wall carbon nanotubes (MWCNTs) were synthesised successfully in situ. And the CO2 adsorption enthalpy of MWCNTs/JUC32-2 was enhanced to 33.8 kJ·mol− 1, compared to 23.4 kJ·mol− 1 for the original JUC-32.Figure optionsDownload as PowerPoint slide