Oxygen vacancy–rich Cu2O@Cu with a hydrophobic microenvironment for highly selective C C coupling to generate C2H4

Rational Construction of a Triple-Phase Reaction Zone Using CuO-Based Heterostructure Nanoarrays for Enhanced Water Oxidation Reaction

“…In addition, the Cu LMM spectra toward CuO/ CF and CuO/Mn 3 O 4 /CF-4 are recorded with peaks locating at 569.2 eV (Figure 3d), evincing the absence of Cu 0 species in as-fabricated samples. 31 As shown in Figure 3e, the Mn 2+ 2p spectra exhibit two typical peaks centered at 640.8 and 652.3 eV, respectively, and other two peaks at binding energies of 641.9 and 653.1 eV are attributed to Mn 3+ 2p 3/2 and Mn 3+ 2p 1/2 . 28,30 Furthermore, the multiplet splitting value of the Mn 3s spectrum is observed of 5.1 eV, which also demonstrate the coexistence of Mn 2+ and Mn 3+ in CuO/Mn 3 O 4 /CF-4 (Figure 3e inset).…”

Copper-based electro-catalytic nitrate reduction to ammonia from water: Mechanism, preparation, and research directions

“…Cu oxides (CuO and Cu 2 O, CuO x ) have been extensively studied as effective catalyst materials, exhibiting excellent electrocatalytic performance for various applications [ [92] , [93] , [94] , [95] , [96] ]. Among them, Cu oxides are particularly promising electrocatalysts for NO 3 RR due to their high selectivity towards NH 3 production and cost-effectiveness.…”

Tandem catalysts CuSe/AuX for increasing local *CO concentration to promote the photocatalytic CO2 reduction to C2H4

“…​ 28 constructed the Ag/Cu composite structure, which adjusted the electronic structure of Cu NPs to enhance the adsorption of *CO, further to accelerate the C‐C coupling and promote the dimerization of *CO into C 2 H 4 . Qiao et al 29 . constructed the oxygen‐vacancy rich Cu 2 O@Cu symbiote in an N‐doped carbon skeleton (Cu 2 O@Cu‐CN).…”

“…Hou et al 28 constructed the Ag/Cu composite structure, which adjusted the electronic structure of Cu NPs to enhance the adsorption of *CO, further to accelerate the C-C coupling and promote the dimerization of *CO into C 2 H 4 . Qiao et al 29 constructed the oxygenvacancy rich Cu 2 O@Cu symbiote in an N-doped carbon skeleton (Cu 2 O@Cu-CN). The rich oxygen vacancy can enhance the activation and adsorption of CO 2 and *CO, thus reducing the energy barrier for the formation of *OCCO intermediates and accelerating the C-C coupling process.…”