Abstract
The application of non-magnetic nanoparticles has received increasing attention in addressing the environmental challenges due to the cost-effectiveness and environmental efficacy of those processes based on the enhanced physical and chemical properties. Nanomaterials display many unique properties, which can only be achieved in nanometer range and not in their bulk counterpart. These unique properties are highly dependent on size and surface functionality of the nanoparticles. Thus, metal nanoparticles with an appropriate size and surface modification can act as detector of toxic ions and water purifier of water pollutant. Nonmagnetic metal oxide, semiconductor nano-crystals often known as quantum dots, metal-metal oxide composite, graphene, graphene oxide can also be used for the removal of water pollutants like the degradation of organic dyes, reduction of toxic ions, killing of fungus, bacteria, as well as other environmental concerns respectively depending upon their unique properties and demand. This chapter summarizes recent developments on the application of non-magnetic metal oxide nanoparticles for the treatment of polluted wastewater, sensing of toxic metal ions, dyes, and of contaminants present in environment.
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