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Multi-strategy for constructing Z-scheme porous hollow double-shell Fe2O3@Ov-NiFe2O4 nanorods-arrays photocathode: Bias-free synthesis of H2O2, Zn-H2O2 cell and generation of NaZnPO4
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DOI：10.1016/j.apcatb.2023.122955.png)
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Abstract
En 中文
The rational design of highly active and cost-effective catalysts for the photoelectrocatalytic H2O2 production plays a crucial role in the development of sustainable energy. An in situ self-assembly template and coupling strategy are demonstrated to design a novel porous hollow double-shell Fe2O3 @Ov-NiFe2O4 with enriched oxygen vacancies and a strongly coupled interface (PDS-Fe2O3 @Ov-NiFe2O4-HR) for producing chemical value-added product and constructing rechargeable Zn-H2O2 batteries. As-resultant Z-scheme PDS-Fe2O3 @Ov-NiFe2O4-HR, by improving light utilization efficiency, redox ability and interfacial charge separation efficiency has fast interfacial carrier transport and low electrochemical resistance, thus kinetically promoting PEC can sustain high H2O2 production rates (6.3 mM h-1). Furthermore, the combined configuration of PDS-Fe2O3 @Ov-NiFe2O4-HR-Ti and Fe2O3-Ti enable the production of H2O2 on both electrodes under an external bias-free condition. Zn-H2O2 cells can also provide sufficient power to a light-emitting diode. This rational design strat-egy provides a new path for constructing highly efficient heterostructure catalysts on energy-related devices.
Keywords:
Porous double-shell hollow nanorods arrays
Oxygen vacancies
Strongly coupled interface structure
Z-scheme charge transfer
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IF:
20.3
Papers:
215
Citations:
16.3W
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