Cobalt-doped copper vanadate: a dual active electrocatalyst propelling efficient H₂ evolution and glycerol oxidation in alkaline water

Abstract

Strategically doped metal oxide nanomaterials signify a rapidly growing genre of functional materials with a wide range of practical applications. Copper vanadate (CuV) represents one such highly active system, which...

Two-Dimensional Ultrathin CeVO4 Nanozyme: Fabricated through Non-Oxidic Material

“…In other words, the appearance of these four peaks demonstrates that Ce 3+ center is indeed present . Also, the core spectrum of V 2p deconvolutes into two peaks at 524.4 and 517.1 eV, which designates the V 2p 1/2 and V 2p 3/2 states, respectively (Figure k) . High-resolution O 1s signal deconvolution suggests the presence of two peaks at 531.7 and 529.6 eV (Figure l).…”

“…59 Also, the core spectrum of V 2p deconvolutes into two peaks at 524.4 and 517.1 eV, which designates the V 2p 1/2 and V 2p 3/2 states, respectively (Figure 2k). 60 High-resolution O 1s signal deconvolution suggests the presence of two peaks at 531.7 and 529.6 eV (Figure 2l). The peak at 530.7 eV corresponds to the existence of surface lattice oxygen; in contrast, the presence of OH groups on the surface of CeVO 4 is indicated by the peak at 528.6 eV.…”

Advancements in catalysts for glycerol oxidation via photo-/electrocatalysis: a comprehensive review of recent developments

“…181 Doping with Co( ii ) in monoclinic Cu 2 V 2 O 7 (Co 5% –CuV, Co 10% –CuV, and Co 20% –CuV), when examined for EC GOR, exhibited an overpotential of 160 mV to reach a current density of 10 mA cm −2 and a faradaic efficiency of >90% in 1 M KOH electrolyte. 182 Porous Cu/Cu 2 O films were doped with Ni 2+ and Cl − , resulting in a change in morphology and 3-fold enhancement of ECSA with concurrent improved GOR kinetics. 183 Recently, Bai et al reported electrocatalytic N 2 reduction, simultaneously replacing EC OER with EC GOR at the anodic part by bimetallic RhCu-ultrathin nanoflake nanoaggregates (RhCu-BUNNs).…”

“…First-principles calculations reveal that CuO and NaHCO 3 increase electrophilicity of C 2 -C 3 and results in direct cleavage of C-C bond, while in NaOH, the removal of H from C 2 of GLAD intermediate followed by dehydration leads to lactic acid production 181. Doping with Co(II) in monoclinic Cu 2 V 2 O 7 (Co 5% -CuV, Co 10% -CuV, and Co 20% -CuV), when examined for EC GOR, exhibited an overpotential of 160 mV to reach a current density of 10 mA cm −2 and a faradaic efficiency of >90% in 1 M KOH electrolyte 182. Porous Cu/Cu 2 O films were doped with Ni 2+ and Cl − , resulting in a change in morphology and 3-fold enhancement of ECSA with concurrent improved GOR kinetics 183.…”

CeVO4 Nanosheets as Bifunctional Electrocatalysts for Glycerol Oxidation and Hydrogen Peroxide Sensing

“…20−23 However, the selective oxidation of glycerol to one of the many possible C3−C1 products is a major issue. 4,9,23 Therefore, the development of alternate catalytic systems to achieve the selective and efficient oxidation of glycerol to FA is highly desirable.…”