Interfacial phosphate-like “bridge” mediates bulk charge and surface oxygenated-intermediate migration for efficient photoelectrochemical water splitting
Literature Information
Cheng Wang, Wei Zhang, Shuo Gu, Shengdong Sun, Meng Zhou, Wei Chen, Shikuo Li
Regulating the heterointerface structure is a great challenge to developing an efficient photoelectrode for solar water splitting. Herein, the interfacial phosphate ([PO]) was brought into the ZnIn2S4/CdS interface to modulate the energy band structure by in situ exchange strategy. The interfacial [PO] paved an electronic “bridge” to eliminate the multiphase thermal resistance and promoted the oxygenated-intermediate migration for the surface oxygen evolution reaction (OER). The optimized ZnIn2S4–PO/CdS (ZIS–P/CdS) photoanode presented a prominent PEC activity with a maximum photocurrent density of 5.19 mA cm−2 at 1.23 V vs. reversible hydrogen electrode (RHE) under AM 1.5 G illumination in a neutral solution without a sacrificial agent, which is about 9.8 times higher than that of the pristine ZnIn2S4 (0.53 mA cm−2). Furthermore, the oxygen output of ZIS–P/CdS was as high as 13.1 μmol within 3 h in the neutral solution. The in situ ultrafast spectroscopy and density functional theory simulation confirmed the [PO] promotion of the Z-scheme charge transfer and acceleration of the O–H bond breakage for OER. This work provides a new horizon for understanding the interface structure on the bulk charge migration and the surface reaction kinetics during the PEC reactions.
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Journal of Materials Chemistry A, B & C cover high quality studies across all fields of materials chemistry. The journals focus on those theoretical or experimental studies that report new understanding, applications, properties and synthesis of materials. The journals have a strong history of publishing quality reports of interest to interdisciplinary communities and providing an efficient and rigorous service through peer review and publication. The journals are led by an international team of Editors-in-Chief and Associate Editors who are all active researchers in their fields. Journal of Materials Chemistry A, B & C are separated by the intended application of the material studied. Broadly, applications in energy and sustainability are of interest to Journal of Materials Chemistry A, applications in biology and medicine are of interest to Journal of Materials Chemistry B, and applications in optical, magnetic and electronic devices are of interest to Journal of Materials Chemistry C. More than one Journal of Materials Chemistry journal may be suitable for certain fields and researchers are encouraged to submit their paper to the journal that they feel best fits for their particular article. Example topic areas within the scope of Journal of Materials Chemistry A are listed below. This list is neither exhaustive nor exclusive. Artificial photosynthesis Batteries Carbon dioxide conversion Catalysis Fuel cells Gas capture/separation/storage Green/sustainable materials Hydrogen generation Hydrogen storage Photocatalysis Photovoltaics Self-cleaning materials Self-healing materials Sensors Supercapacitors Thermoelectrics Water splitting Water treatment












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