27/07/2025
Korean scientists have developed an innovative method to convert plastic waste into clean hydrogen fuel using sunlight, offering a pollution-free energy solution. This breakthrough, led by researchers at the Korea Advanced Institute of Science and Technology (KAIST), utilizes photocatalysis to break down non-biodegradable plastics into hydrogen and other byproducts.
The process involves a photocatalyst, typically titanium dioxide, which absorbs sunlight to generate energy that drives the chemical reaction. When exposed to ultraviolet light, the catalyst triggers the degradation of plastic waste, such as polyethylene and polypropylene, into smaller molecular fragments, releasing hydrogen gas in the process.
This method is sustainable, as it relies on abundant sunlight and produces no harmful emissions, unlike traditional plastic incineration or landfilling, which release greenhouse gases and toxins. The hydrogen generated is a clean energy source, usable in fuel cells for electricity or as a vehicle fuel.
The technology addresses two global challenges: plastic pollution and the demand for renewable energy. While still in early development, scaling this process could revolutionize waste management and energy production, creating a circular economy where waste plastics become a valuable resource for clean fuel.