Hydrogen peroxide (H2O2) sensors are used to detect low concentrations of H2O2 in food and pharmaceutical industries. Of the two types of sensors developed, enzymatic and non-enzymatic, the latter holds to be the more ideal route due to their better stability in various aqueous environments. Herein, we have developed and characterized various metal (Mn, Co) complexes of cyclic and acyclic ligands supported on different carbonaceous nanomaterials for detecting low concentrations of H2O2 efficiently. The catalytic ability was established using electrochemical studies and evaluated to be sensitive in low concentrations of H2O2. Role of carbon-based supporting materials (multiwalled carbon nanotubes, graphene and carbon black) was established and we found that carbon nanotubes and graphene were more sensitive in detecting H2O2 compared to carbon black. The effect of various groups on the ligands was also electrochemically tested to determine the best detection system.

Electrochemical sensing of hydrogen peroxide using various metal complexes supported on carbonaceous nanomaterials

247th National Meeting (2014)

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