One-step, template-free hydrothermal synthesis of CuO tetrapods

Investigation of the structural, optical and magnetic properties of CuO/CuFe2O4 nanocomposites synthesized via simple microemulsion method

“…The third band was observed in the visible region [24] which exhibited a broad optical absorption band around 780 nm, assigned to the 2 E g → 2 B 1g transition imputed to Jahn-Teller splitting of d levels of copper ions [25]. Otherwise, three transition bands 6 A 1g (S) → 4 T 1g (G) (ν 1 ), 6 A 1g (S) → 4 T 2g (G) (ν 2 ) were assigned ; ν 1 at 950 nm whereas ν 2 at 550 to 650 nm usually as a shoulder. Indeed, the bands corresponding to 6 A 1g (S) → 4 A 1g (G), 4 E g (G) (ν 3 ) was deduced around 450 nm [26][27].…”

“…These doped nanomaterials have been demonstrated to show co-existence of different physical properties like semiconductor and ferromagnetic materials [6][7]. For instance, it is reported that the addition of Fe 3+ ion in copper oxide leads to form CuO/CuFe 2 O 4 nanocomposites [8].…”

Hierarchical 3D-flower-like CuO nanostructure on copper foil for supercapacitors

“…The electrochemical performance of CuO 4 nanostructures is strongly influenced by its morphology. CuO as an electrode material for supercapacitors, in the form of tetrapods, flowers, nanorods, nanoribbons, nanowires, nanobelts, nanosheets, micro-roses and micro-woolen, lotus, nanowire, nanosheet, flower-like has been reported [11][12][13]. Among these, nanoflowers have several advantages in supercapacitor applications.…”

Optical investigation of various morphologies of ZnO nanostructures prepared by PVP-assisted wet chemical method

“…The dislocation density δ defined as the length of dislocation line per meter square of the crystal was evaluated [17] using equation (4) It was found that strain arising from lattice dislocation and dislocation density calculated from Eqs. (3), (4) was very small and had negligible effect on peak broadening.…”