Mesoporous carbon spheres are widely used in energy storage applications, particularly in supercapacitors and lithium-ion batteries, due to their high surface area and excellent electrical conductivity. They serve as efficient electrode materials, enhancing charge storage and transfer capabilities. In catalysis, these spheres act as supports for metal nanoparticles, improving reaction rates and selectivity in various chemical processes. They are also employed in gas adsorption and separation, effectively capturing pollutants like CO2 and volatile organic compounds. Additionally, mesoporous carbon spheres are utilized in drug delivery systems, where their porous structure allows for controlled release of therapeutic agents. Their versatility makes them valuable in environmental remediation, such as water purification, by adsorbing heavy metals and organic contaminants.