| abstract |
Monolithic nanoporous material, standing upright (ie self-supported or cohesive), solid and transparent, essentially free of cracks, transparent to UV, obtained by Sol-Gel, said material having a basic character and comprising a reagent capable of generating a colored product by formation of a bond with phenol, a basic compound or mixture of basic compounds and a compound or mixture of oxidizing compounds, a process for their preparation and use in the detection or selective depollution of phenol or of one of its compounds. |