Copper(II) nitrate trihydrate is a crystalline compound with high solubility in water. It serves as an excellent precursor for the synthesis of high-purity compounds, nanomaterials, and catalysts.

Metal-organic frameworks (MOFs) have found applications in various fields such as gas storage, separations, sensors, catalysis, fuel cells, solar cells, nanotechnology devices, and drug delivery. Through a modular assembly strategy, a highly crystalline thin film of Cu-TCPP MOF was synthesized using Copper(II) nitrate trihydrate and the linker TCPP. This specific MOF holds significant promise due to its well-defined structure and potential for diverse applications. -Copper oxide nanoparticles of varying sizes were synthesized through a hydrothermal method using different concentrations of Copper(II) nitrate trihydrate. The pH of the solution was adjusted by adding NaOH or HNO₃. This versatile approach allowed for the controlled synthesis of copper oxide nanoparticles with different sizes. - Mesoporous CuCo₂O₄ nanowires were synthesized as electrode materials for supercapacitors using Copper(II) nitrate trihydrate and Cobalt(II) nitrate hexahydrate using hydrothermal method. The synthesis involved nanocasting from a silica SBA-15 template. These electrode materials exhibited a capacitance of 1210 F g^–1 at a current density of 2 A g^–1, which significantly increased upon cycling to exceed 3000 F g^–1. - A hybrid electrode comprising CuO and Cu₂O micronanoparticles within a graphitized porous carbon matrix was synthesized using Copper(II) nitrate trihydrate via a one-step thermal transformation process. This hybrid electrode exhibited remarkable performance when employed as a negative electrode in lithium-ion and sodium-ion batteries, achieving capacities of 887.3 mAh g^–1 at 60 mA g^–1 and 302.9 mAh g–1 at 50 mA g^–1 after 200 cycles, respectively. In addition,Copper(II) nitrate trihydrate serves as a suitable precursor for synthesizing copper catalysts for various applications. -Copper ferrite catalysts were synthesized using a co-precipitation method with the salt precursors Copper(II) nitrate trihydrate and Fe(NO₃)₃·9H₂O. These catalysts exhibited heightened activity in the water-gas shift reaction. The improved catalytic performance can be attributed to factors such as enhanced Cu dispersion, a higher quantity of surface copper atoms, the presence of weak basic sites, and a strong interaction between copper and iron oxides, all resulting from the formation of copper ferrite.