研究目的
Investigating the enhancement of photoelectrochemical water oxidation kinetics and migration of photogenerated electron and hole by integrating cobalt phosphide nanosheets on porous BiVO4 electrodes.
研究成果
The integration of CoP nanosheets on BiVO4 electrodes significantly improves PEC water oxidation performance due to the restraint of surface charge recombination and increase in photovoltage, demonstrating CoP as a competitive co-catalyst for PEC water oxidation.
研究不足
The study focuses on the PEC performance in a borate buffer at pH 9.0, and the stability of the photoanode over long-term operation needs further investigation.
1：Experimental Design and Method Selection:
The study employed a hydrothermal method to integrate CoP nanosheets on nanoporous BiVO4 electrodes.
2：Sample Selection and Data Sources:
Nanoporous BiVO4 photoanodes were prepared via an electrodeposition method followed by annealing.
3：List of Experimental Equipment and Materials:
FTO-coated glass slides, Co(CH3COO)2?4H2O, NH3?H2O, NaH2PO2?H2O, and other AR grade organic solvents were used.
4：Experimental Procedures and Operational Workflow:
The BiVO4+CoP electrode was prepared by immersing BiVO4 electrodes in CoP suspension liquid and heating in a Teflon-lined stainless autoclave.
5：Data Analysis Methods:
Photoelectrochemical performance was measured using a CHI 760E electrochemical workstation, and other characterizations included XRD, SEM, TEM, XPS, UV-visible spectrophotometer, and ICP.
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