High-performance p-Cu₂O/n-TaON heterojunction nanorod photoanodes passivated with an ultrathin carbon sheath for photoelectrochemical water splitting

Abstract

The p-type Cu2O/n-type TaON heterojunction nanorod array passivated with ultrathin carbon sheath as a surface protection layer is excellent in photoelectrochemical water splitting.

Synergetic Catalytic Effect of Cu2–xSe Nanoparticles and Reduced Graphene Oxide Coembedded in Electrospun Nanofibers for the Reduction of a Typical Refractory Organic Compound

“…41,42 We suppose that the Cu 2 O species forms a thin layer at the surface of Cu 2−x Se NPs, resulting from the interaction between Cu + in Cu 2−x Se NPs and O in nanofibers. The chemical composition and valent state of the Cu 2−x Se/rGO/PVP composite nanofibrous mats were analyzed by XPS and EDX.…”

Fabrication of TiO2/RGO/Cu2O heterostructure for photoelectrochemical hydrogen production

“…Hydrogen production rate was measured and calculated through gas chromatography. [53,54] A three-electrode Page 14 of 30 A c c e p t e d M a n u s c r i p t 14 system was also utilized, in which working electrode is heterostructure in 20% methanol aqueous solution, while the counter electrode is Pt plate in deionized water for hydrogen evolution. The TiO 2 /RGO/Cu 2 O electrodes in this system played an important role in the accumulation of holes, and the holes was mainly used to oxide methanol to formaldehyde, which significantly improves the separation of photogenerated electrons and holes.…”

Design of sandwich-structured ZnO/ZnS/Au photoanode for enhanced efficiency of photoelectrochemical water splitting

“…the light absorption and carrier transport of the photoelectrode largely determines the capability of the PEC cell for water splitting. Lightweight active semiconductors or metal oxides such as titanium dioxide (TiO 2 ), zinc oxide (ZnO), hematite (Fe 2 O 3 ), and cuprous oxide (Cu 2 O) have shown great potential as photoelectrodes for hydrogen generation [4][5][6][7][8][9][10][11][12][13]. As a common and inexpensive semiconductor, ZnO has been extensively explored in a nanosized form for solar energy conversion, because of its excellent electron mobility, electron-transfer efficiency (115-155 cm 2 /(V·s)) [14], abundant potential morphologies, and good environmental compatibility [15][16][17][18].…”