Elucidating the optical, electronic, and photoelectrochemical properties of p-type copper vanadate (p-Cu₅V₂O₁₀) photocathodes

Abstract

Compact spray-pyrolysed Cu5V2O10 photocathodes with 1.9 eV bandgap show positive photocurrent onset voltage and promising photoresponse.

Phase-dependent photocatalytic selective oxidation of cyclohexane over copper vanadates

“…The peaks at 285, 349 and 522 cm À1 are assigned to the bending modes of the same structure, which is greatly in agreement with the Cu 5 V 2 O 10 crystal phase reported in a previous paper. 42 The Raman spectra further confirmed the successful preparation of CuV 2 O 6 , Cu 2 V 2 O 7 and Cu 5 V 2 O 10 , which was consistent with the XRD patterns. Fig.…”

Progress in Ternary Metal Oxides as Photocathodes for Water Splitting Cells: Optimization Strategies

“…Regarding copper vanadates, Cu 3− x VO 4 was reported to have a narrow bandgap of 1.2 eV. [ 169 ] Recently, Song et al [ 170 ] reported thin film p‐type Cu 5 V 2 O 10 obtained by spray pyrolysis, having a bandgap of 1.8–2.0 eV. Moderate absorption properties and extensive charge trapping preventing the photogenerated carriers from reaching the interface are linked to the low photocurrents detected.…”

Assessing the Suitability of Copper Vanadate (Cu11V6O26) for Use as a Photoanode Material for Photoelectrochemical Water Oxidation

“…16−21 In our previous work, we prepared β-Cu 2 V 2 O 7 and Cu 5 V 2 O 10 thin films using the spray pyrolysis method and demonstrated these mixed metal oxides as two promising photoelectrode candidates. 22,23 Jiang et al reported a γ-Cu 3 V 2 O 8 film with suitable band structure and excellent PEC stability and applied it as a photoanode for water electrolysis. 24 Cu 11 V 6 O 26 is another promising photoanode material for the water splitting reaction.…”

“…Ternary metal oxides have been widely applied as photoelectrodes for solar water splitting because of their relatively small band gap (1.8–2.1 eV) and good photostability in aqueous solutions. ,− Among them, copper vanadate photoelectrodes (α-CuV 2 O 6 , β-Cu 2 V 2 O 7 , γ-Cu 3 V 2 O 8 , Cu 5 V 2 O 10 , etc.) have attracted much attention for photoelectrochemical water splitting. − In our previous work, we prepared β-Cu 2 V 2 O 7 and Cu 5 V 2 O 10 thin films using the spray pyrolysis method and demonstrated these mixed metal oxides as two promising photoelectrode candidates. , Jiang et al reported a γ-Cu 3 V 2 O 8 film with suitable band structure and excellent PEC stability and applied it as a photoanode for water electrolysis . Cu 11 V 6 O 26 is another promising photoanode material for the water splitting reaction.…”