1a.) Titanium Dioxide TiO2

1b.) FullSizeRender

1c.)Fujishima discovered the Photocatalytic properties of Titanium Dioxide for the Honda-Fujishima effect. The actual mineral was discovered hundred of years before but it is unknown who discovered it.

1d.) Since Titanium Dioxide is non-toxic, it is used in many common cosmetic products such as sunscreens, lipsticks, body powder, etc.

1e.) The mineral, titanium dioxide, is considered to be the most popular natural whitener

1f.)

2a.) Titanium Tetrachloride TiCl4

2b.) FullSizeRender

2c.) Wilhelm J. Kroll was the first to discover Titanium tetrachloride when looking at elements one day in his study

2d.) There are no common uses for titanium tetrachloride because it is highly toxic and any contact with the mineral can cause irritation all parts of the body

2e.) It is found in meteorites, and in some types of stars.

G.) I like Titanium dioxide better because it useful for many different products around the world instead of being highly reactive like the Titanium tetrachloride