Nickel (III) Oxide Powder and Its Applications

Nickel(III) oxide is the inorganic compound with the chemical formula of Ni2O3. Sometimes nickel (III) oxide is referred as black nickel oxide.

Nickel (III) oxide powders can be used in various applications. Nickel (III) Oxide (Ni2O3) Powder (40 nm, 99.95+ %) is used in the manufacture of nickel salts, specialty ceramics, and nickel catalysts for example to enhance the activity of three-way catalysts containing rhodium, platinum, and palladium used in automobile exhaust control.

Let's look at one of the applications of nickel (III) oxide in more details. Nickel (III) Oxide Powder can be used for Cr(VI) ion removal at room temperature.The presence of various heavy metals like Cr(VI), As(III), U(VI) etc. in aquatic environments causes major concern for aquatic life and human health due to their severe toxicity. Cr(VI) exists in the eﬄuents of various industries like electroplating, pigments etc. and is identified to be one of the most fatal species due to its carcinogenic eﬀects on human beings and its abundance in drinking water. Out of two diﬀerent forms of chromium, the hexavalent (Cr(VI)) and trivalent form (Cr (III)) in aqueous medium, Cr(III) precipitates in its hydroxide and oxide forms, therefore it doesn't migrate in the solution and is easily separable. On the other hand, Cr(VI) being highly soluble in water is observed to be highly toxic due to its high redox potential it and causes cancer, kidney damage, gastrointestinal disorders etc.

Till date, among diﬀerent readily available methods like chemical precipitation, solvent extraction, membrane separation, ion exchange, adsorption etc. to remove Cr(VI), adsorption is found to be the most suited one that is being successfully used to remove from its respective aqueous solutions. The most commercially used material for this purpose is the activated carbon or mesoporous carbon due to their high surface porosity. Apart from them, bio-adsorbents are used as adsorbents in waste water treatment. However, they have weak mechanical strength, poor separation capacity and hence they are not very eﬀective in this field.

Recently, alternative materials including various oxide based nanocomposites and nanostructures have been synthesized as potential adsorbent of heavy metal ions. Thus, with the advancement of technology, newer materials with improved adsorption capacities are being developed. One of these newer materials is Nickel (III) Oxide (Ni2O3) Powder. Since metal oxides are known to have high adsorption capacity of toxic metals in nanodimensions, nickel (III) oxide can be used for this purpose.

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