Title : Gas adsorption on carbon nano-onions
Abstract:
One of the highest priority issues for the scientific community is the mitigation of the greenhouse effect and the development of renewable and non-polluting energy sources1. In both cases, the development of materials for gas storage is one of the critical aspects. For this reason, new materials for the adsorption of greenhouse gases (carbon dioxide and methane)2 and gaseous energy carriers3 are being studied. Carbon nanocomposites (CNOs) are one of the most recently discovered carbon allotropes. CNOs can be synthesized by several methods including submerged arc-discharge in water (SADW)4, 5. The properties of CNOs synthesized by SADW as a gas adsorbent have not been studied yet, so the aim of this work is to study these properties. For this purpose, CNOs were synthesized by SADW and characterized using different methods (XRD, TEM, Raman spectroscopy and TGA) determining their structural defects, size, morphology and thermal stability. From BET Isotherms, their surface area, volume and average pore size of CNOs were determined6. Subsequently, their adsorption capacity for dihydrogen, methane and carbon dioxide was studied from adsorption/desorption isotherms, obtaining superior results compared to those found in the literature. In order to determine the kind of adsorption were realized the fitting using adsorption isotherm models. Computational calculations were performed in order to understand and support experimental results.
Audience Take Away:
- This work will provide evidence of the potencialities of carbon nano-onions for environmental remediation
- The audience will learn about the factors governing gas adsorption
- The audience will learn about the different methods to study the interactions in adsorption
- This work is an example of the use of computational calculations to explain experimental results
