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Metal oxide nanomaterials (MONMs) have gained much research attention as prospective materials of preference for modifying electrode surfaces intended for electrochemical sensing of heavy metal ions. MONMs have attracted much research interest because of their unique characteristics at nano dimensions compared to bulk species. In general, the unique electronic properties, high electron transfer kinetics, semi-conducting properties among others make them exceptionally smart materials for electrochemical reaction. Moreover, early detection of toxic metal ions in our water bodies will help to improve the standard of human living in the environment. Owing to this effect, the present chapter deals with the utilization of electrochemical techniques such as voltammetry and potentiometry among other electrochemical techniques for sensing of heavy metal ions in water bodies. The chapter also address the progress in the application of different metal oxide nanomaterial in terms of their frameworks, adsorption capacities, surface structure, chemical functional group attached, and how their use as preference of electrode materials affect electrochemical sensing of heavy metal ions in water. |
