The green synthesis of ZnO nanoparticles using Padina pavonica extract shows promise for environmental remediation, ...

Methylene blue is both a dye and an FDA-approved medication.Described as the first fully synthetic drug used in medicine, methylene blue was initially synthesized by a German chemist in 1876, and ...

Once the only blue dye in Europe, woad pigment made a fortune for the sun-rich Toulouse area during the Renaissance, when it also was called Toulouse’s Blue Gold.

To get that blue color, over 70,000 tons of indigo dye are made each year. When the dye (and garment dyes in general) isn’t handled properly, it can end up polluting waterways, damaging local ...