Microwave synthesis of β-Cu2V2O7 nanorods: structural, electrochemical supercapacitance, and photocatalytic properties

Phase-dependent photocatalytic selective oxidation of cyclohexane over copper vanadates

“…When the Cu/V molar ratio was increased to 1, the XRD pattern was well matched with the Cu 2 V 2 O 7 crystal phase (JCPDS Card 073-1032), no other diffraction peak related to the V species or Cu species was detected, indicating the highly pure crystal phase. Notably, the diffraction peak at 2y of 24.71 was much higher when compared to the reference card, 41 showing the directional growth of Cu 2 V 2 O 7 along the (200) plane. As for the Cu-V-3 sample, single phase Cu 5 V 2 O 10 was detected (JCPDS Card 026-0570).…”

“…36 The bands at 911, 793, 699 and 526 cm À1 corresponded to the stretching NJC Paper mode of distorted octahedral VO 6 and the band at 407 cm À1 was assigned to the bending mode of distorted octahedral VO 4 respectively. 24 Cu-V-1 displayed the stretching and bending modes of tetrahedral VO 4 (963, 854 and 394 cm À1 ), the shorter symmetrical V-O stretching mode (916 cm À1 ) and the long and short asymmetrical V-O stretching modes (789 and 553 cm À1 ), 41 which are characteristic vibrations of the Cu 2 V 2 O 7 phase. The Raman bands for Cu-V-3 located at 809, 906, and 949 cm À1 are attributed to tetrahedral VO 4 stretching modes.…”

One-Pot Synthesis of rGO@Cu2V2O7 Nanocomposite as High Stabled Electrode for Symmetric Electrochemical Capacitors

“…From these finding, such as capacitance vales from rGO@Cu 2 V 2 O 7 electrode was compared with the known literatures copper vanadate had listed in Table II. [52][53][54][55][56] The Nyquist plot was fitted with the equivalent circuit model as shown in Fig. 5f.…”

CuO–V2O5 Composite vs Single-Phase Cu2V2O7: Understanding the Synergy of Mixed-Metal Oxides in Customizing Their Properties for Improved Hydrogen Evolution Reaction

“…The XRD patterns of all of these synthesized materials confirm their crystalline and impurity-free nature, validating that the developed synthesis methods are promising for forming composite and single-phase structure of mixed-metal oxide systems. 37 Using Scherrer's formula (D = 0.9λ/βcosθ, where D is crystallite size in nm, 0.9 is crystallite shape constant, λ is the wavelength of X-rays used (1.5406 Å), β is the full width at half-maximum, and θ is Bragg's diffraction angle), a crystallite size of around 43 nm was estimated for the single-phase Cu 2 V 2 O 7 system. Similarly, crystallite sizes of ∼16 and 29 nm were estimated for CuO and V 2 O 5 , respectively.…”