“…[1][2][3][4][5] Because of these attractive physicochemical properties, CuO NPs deserve to be extensively studied for use in more efficient ways in the diverse field of technology such as in gas sensors, energy storage systems, solar cell, biomedical, catalysis, photocatalysis, hightemperature superconductors and supercapacitors, and so on. [5][6][7][8][9][10][11][12][13][14] Furthermore, due to the high chemical potential, enhanced active surface area, chemical stability in a broad range of chemicals, and insolubility of CuO NPs in most of the solvents, they can act as an efficient heterogeneous catalyst in many precious chemical conversions. 7-9, 15, 16 However, the physicochemical properties and the application of CuO NPs are dependent on size, shape, morphology, crystal patterns and accessible surface area of the constituent particles which in turn largely depend upon the synthetic approaches.…”