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Multi walled carbon nanotubes (MWcnts) were decorated by activated carbon nanoparticles of resorcinol-formaldehyde aerogels. carbon nanospheres and MWcnts were mixed by equal mass ratios for different durations. The products were characterized by Raman spectroscopy, thermal gravimetric analysis, nanoscanning electron microscopy, transmission electron microscopy and x-ray diffraction. The results indicated that a significant decoration with carbon nanoparticles occurred onto the MWcnts. Carbon nanotubes (CNTs) drew a remarkable attention from their first discovery. This is attributed to their unique features, such as mechanical properties, electric properties, thermal stability, high chemical resistance and large surface areas 1. As a result of these characteristics, they became strong candidates for numerous applications; including catalytic processes, water treatment, drug delivery, gene transfer, transparent conducting membranes and electrochemical analysis 2-7. The idea of CNT decoration was introduced to widen their applications in different fields. It was reported in various works of literature that it was possible to decorate CNTs with either organic compounds or metallic nanoparticles 8-10. The importance of carbon aerogels is assigned to their hierarchical porous properties, which makes them suitable for use in numerous applications 11-14. For example, carbon aerogels are utilized in catalyst support, separation tools, eclectic supercapacitor materials and battery construction 15,16. It is noteworthy to mention that, to the authors' knowledge, the carbon-carbon decoration of multiwall carbon nanotubes (MWCNTs) by carbon nanoparticles (CNp) was not tackled in literature. Therefore, in this work, we disclose our method of decorating MWCNTs with resorcinol-formaldehyde activated carbon aerogel (RFA) CNp. The hybrid carbon nanoproducts will be characterized by various devices for tracking the changes of outcome carbon nanoproducts.

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Various ZIFs (ZIF-8, Cu10%/ZIF-8, and Cu30%/ZIF-8) were exploited in the adsorption of N2, CH4, and CO2 gases over a temperature range from 25 to 55 °C. The dual site Langmuir model was used to describe the measured adsorption equilibria. Overall, N2 exhibited the lowest adsorption capacity onto all adsorbents, whereas CO2 gas exhibited the highest adsorbed amount. Among the three adsorbents, the highest adsorption capacities of all gases was onto Cu10%/ZIF-8. The adsorption isosteric heats of different systems were determined. Furthermore, the overall mass transfer coefficients for adsorbing N2, CH4 and CO2 gases on each adsorbent were studied at different temperatures.