Researchers at the University of Johannesburg have developed a new type of photocatalyst that harnesses the visible portion of the sunlight spectrum. Currently, economical and environmentally-friendly photocatalysts only ‘use’ the UV spectrum of sunlight—for example, the commonly-used titanium dioxide and other close equivalents.
Click here for original story, New type of visible-light responsive photocatalyst is efficient, stable and very economical
Source: Phys.org