|Abstract||Carbon-based (CNs) nanostructures attracted great attention in various conversion energy technologies, owing to their unique"physicochemical properties such as high surface area, abundant active sites, and stability. Herein, we developed a facile approach for the rational fabrication of CNs nanostructures included MXene and Nitrogen enriched carbon capsules doped with metal atoms at the atomic level."The as-formed nanostructures possess outstanding properties such as massive surface area (x m2 g-1), accessible active sites."Although the great progress in the development of Nano-catalysis for gas conversion reactions, it remains a great chance to find efficient, durable, cost-effective, and selective catalysts work under mild reaction conditions such as room temperature and atmospheric pressure."Unlike other catalysts reported elsewhere, the proposed catalysts herein possess outstanding inbuilt properties of atomic-doped carbon-based materials such as great thermal/chemical stability, high surface area, massive adsorption sites for gases and their ability to inherently generate oxygenated or hydrogenated species which accelerate the reaction kinetics under low temperature (thermally) and low potential window (electrochemically). Also, these materials can be prepared from different abundant and inexpensive materials.