Sustainable photoanodes for water oxidation reactions: from metal-based to metal-free materials

Abstract

Sunlight affords an inexhaustible and primary energy for Earth. A photoelectrochemical system can efficiently harvest solar energy and convert it into chemicals. However, sophisticated processes and expensive raw materials are...

Single-Crystalline Bi2YO4Cl with Facet-Aided Photocarrier Separation for Robust Solar Water Splitting

“…The applied bias photon-to-current efficiency (ABPE) attains a maximum of 0.23% around 0.9 V vs RHE (Figure h). As the photoanode is fabricated by a simple deposition method, there are plenty of rooms to improve the PEC performance with more technical efforts devoted. , Compared with S-800, the much better photocatalytic and PEC activities of F-800 originate mainly from the much improved charge separation conditions according to the plot of charge separation efficiency (Figures i and S8), photoluminescence spectra, and time-resolved photoluminescence spectra (Figure S9).…”

Light trapping by porous TiO2hollow hemispheres for high efficiency photoelectrochemical water splitting

“…The photoelectrochemical (PEC) approach has received constant attention in the fields of energy, 1,2 environment, 3,4 and many others 5,6 since the discovery of the TiO 2 photoanode for water splitting by Fujishima and Honda in 1972. 7 The key to PEC technology is the construction of a film on a conductive substrate, allowing light absorption and efficient charge transfer.…”

Zinc vacancy mediated electron–hole separation in ZnO nanorod arrays for high-sensitivity organic photoelectrochemical transistor aptasensor

“…[4][5][6] Serving on photo-electric conversion interface in gate electrode, the PEC process involves the conversion of light to an electrical signal resulting from electron excitation and the subsequent charge transfer generated by illumination of the photoelectric material. [7][8][9] Consequently, photoactive materials play a key role in this process. One-dimension-based ZnO nanorod arrays have been widely researched as significant and promising photoactive materials due to their high surface area for efficient collection and conversion of photocarriers, good structural stability, and environmental benignity.…”