Photocatalytic

Relating to or exhibiting photocatalysis, the acceleration of a photoreaction (a chemical reaction initiated by the absorption of light) through the presence of a catalyst. photocatalytic processes utilize a photocatalyst, typically a semiconductor material like titanium dioxide (TiO2), to absorb photons of light, generating electron-hole pairs. These charge carriers then facilitate redox reactions, driving the degradation of organic pollutants, disinfection, and hydrogen production. This technique harnesses solar or artificial light to initiate and sustain chemical transformations, making it a promising approach for environmental remediation and sustainable energy.

Photocatalytic meaning with examples

• The research team developed a new photocatalytic coating for windows. This self-cleaning coating uses sunlight to break down organic dirt, reducing the need for harsh cleaning chemicals and maintaining window transparency. It functions by utilizing titanium dioxide nanoparticles, making building maintenance more sustainable and environmentally friendly.
• Engineers are exploring photocatalytic water purification systems for developing countries. These affordable systems use sunlight and a photocatalyst to disinfect water by breaking down harmful bacteria and viruses. The design aims to provide a sustainable solution to access clean and safe drinking water with minimal infrastructure.
• Scientists are studying the photocatalytic production of hydrogen from water. This process uses sunlight to split water molecules, generating clean hydrogen fuel. Researchers are focusing on improving the efficiency of the photocatalyst to make this technology a viable alternative energy source for the future.
• A new photocatalytic air purifier effectively removes volatile organic compounds (VOCs). This air purifier utilizes a filter coated with a photocatalyst to break down pollutants present in indoor air. The process improves air quality and is particularly beneficial in homes and offices.
• The photocatalytic properties of specific nanomaterials have been investigated to treat industrial wastewater. These advanced materials facilitate the removal of dyes and other contaminants, promoting the purification of contaminated water from industrial sites. This technique offers an eco-friendly way to remediate industrial pollution.