Ultrasensitive and selective electrochemical sensing of Hg(ii) ions in normal and sea water using solvent exfoliated MoS2: affinity matters

A solvent exfoliated molybdenum disulphide (MoS₂) has been exploited for the electrochemical (EC) sensing of mercury(ii) ions (Hg²⁺) with excellent selectivity and a detection limit (LOD) of 0.000001 nM,i.e.in parts per quadrillion (0.2 ppq) levels.