Heterogeneous colorimetric sensor for mercuric salts.
A novel chemical sensor for the colorimetric detection of mercuric salts is described. The sensor is based on a mesoporous nanocrystalline TiO2 film sensitised with a ruthenium dye; immersion of this film in an aqueous solution of Hg2+ results in a rapid colorimetric response, with both a high selectivity and a sub-micromolar sensitivity.
Palomares
Emilio
E
Department of Chemistry, Imperial College London, South Kensington, London SW7 2AY, UK. e.palomares@imperial.ac.uk
Vilar
Ramón
R
Durrant
James R
JR