Question

How to calculate weight % for doping a material in to another materials?

Answer 1

0.1mol% of Europium Nitrate with TiO2 material is:

0.1 mol Europium Nitrate in 100 g TiO2.

Molecular Weight of Europium Nitrate is 337.98 (anhydrous basis).

1 mol of Europium Nitrate= 337.98 g; hence, 0.1 mol = 33.8 g

for obtaining 0.1mol%, your mixture should contain 33.8 g Europium Nitrate in 100 g TiO2.

Hoping this will be helpful.