▎ 摘　　要

NOVELTY - Carbon dioxide adsorbent comprises graphene nanoribbon, and a metal dispersed in the edge region of the graphene nanoribbon, where average distance between the metals is 5-25 Angstrom , and bonding energy between the metals is 1.2-1.8 eV. USE - Used as carbon dioxide adsorbent. ADVANTAGE - The carbon dioxide adsorbent is selectively adsorbs carbon dioxide in atmospheric environment, and easy to remove and attach and has excellent adsorption capacity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for regenerating carbon dioxide adsorbent, comprising (a) adsorbing carbon dioxide using the carbon dioxide adsorbent, and (b) desorbing the carbon dioxide by heating the carbon dioxide adsorbed carbon dioxide adsorbent.