Cu2O photoelectrodes for solar water splitting: Tuning photoelectrochemical performance by controlled faceting

CO2 Reduction of Hybrid Cu2O–Cu/Gas Diffusion Layer Electrodes and their Integration in a Cu‐based Photoelectrocatalytic Cell

“…Cu 2p 3/2 and Cu 2p 1/2 peaks are found at the binding energy of 932.8 and 952.7 eV, respectively. These positions are relative to Cu 2 O and Cu 0 , the difference between them being not easy distinguished by XPS . However, the presence Cu + can be identified by the weak satellite present around 945 eV (Figure b) .…”

“…Research on Cu‐based electrodes is quickly increasing owing to their photoactive properties, natural copper abundance, good environmental acceptability, low thermal emittance, non‐toxicity, and simple and low‐cost production process . The interest in the Cu 2 O catalyst has increased after the electrodeposited polycrystalline Cu 2 O has been reported to be stable for operations in aqueous solutions …”

“…Research on Cu-based electrodes is quicklyi ncreasing [22][23][24][25][26][27][28][29][30][31][32][33][34][35] owing to their photoactive properties, natural copper abundance, good environmental acceptability,l ow thermal emittance,n on-toxicity,a nd simple and low-cost production process. [36][37][38] The interest in the Cu 2 Oc atalysth as increased after the electrodeposited polycrystalline Cu 2 Oh as been reported to be stable foroperations in aqueouss olutions. [39][40][41][42] This work analyzesh ybrid Cu 2 O-Cu/GDL electrodes for the electrocatalytic reduction of CO 2 ,a nd their combination with aC uO/NtTiO 2 photoanode in ac ompact-design PEC cell.…”

Photocatalytic degradation of hexavalent chromium emerging contaminant via advanced titanium dioxide nanostructures

“…The observed behavior is mainly due to the photocatalyst physicochemical properties and can be understood in terms of a better stabilization of the cuprous oxide (Cu 2 O) at these pH values. In fact, it has been recently shown that the pH influences the morphology, structural, and photoelectrochemical (PEC) properties of Cu 2 O films and its optimization leads to controlled faceting, high photostability against corrosion and without formation of competing phases such as CuO [36]. In addition, density functional theory (DFT) calculations have shown that the relative stability of Cu-and Oterminated Cu 2 O(1 1 1) surfaces as well as the formation free energy of adsorbates depend on pH [37].…”

Synthesis of Cu2O/graphene/rutile TiO2 nanorod ternary composites with enhanced photocatalytic activity

“…Alternatively, cuprous oxide (Cu 2 O), a p-type semiconductor with a direct band gap of about 2.0 eV, is a promising material for the conversion of solar energy into electrical or chemical energy [18][19][20]. Recently, Cu 2 O and TiO 2 composites have been studied for improving the photocatalytic activity of TiO 2 .…”