Synthesis of Mesoporous Eu-Doped Zinc/Silicate Phosphors for Highly Selective and Sensitive Detection of Sulfide Ions.

A mesoporous Eu-doped zinc/silicate phosphor with a large surface area (>100 mg) and amorphous structure was prepared in an aqueous solution without using any organic template. The residual concentration of the Zn ion in the filtrate is lower than the standard of effluent 3.5 ppm under a pH 8-11 preparation condition.