From Waste to Value‐Added Chemicals—Glycerol Electrooxidation Upgrading

Waste glycerol, the main byproduct of biodiesel production, can be converted into value-added chemicals via electrocatalytic oxidation reaction, providing a promising pathway for green and sustainable energy development. This concept comprehensively reviews the development process of transforming glycerol from waste byproduct into value-added chemicals. Firstly, we outline the overall pathway of glycerol oxidation reaction and the applications of its product. Next, focusing on C1 and C2 products, we propose five key design strategies-doping, heterojunction, alloy, vacancy, and surface modification strategies to regulate the electronic properties of electrocatalysts and enhance catalytic activity. Additionally, for high value-added C3 products, we analyze for the first time the effects of environmental factors such as adsorption configuration, interface microenvironment, electrolyte effect, and pulse potential on GOR activity and C3 selectivity, providing an overview of recent advances. Finally, we highlight the current challenges in GOR and propose prospects to promote further industrial development.