研究目的
Investigating the fabrication of robust nanostructured (Zr)BiVO4/Nickel Hexacyanoferrate Core/Shell Photoanodes for solar water splitting.
研究成果
The study successfully developed a simple sequential method for creating (Zr)BiVO4/NiFePB core/shell nanostructured photoanodes, resulting in a significant enhancement of photocurrent and a low onset potential. The amorphous nature and superior conformity of the NiFePB coating were key to these improvements. The work demonstrates the potential of Prussian blue materials as efficient and robust oxygen evolution catalysts for BiVO4 electrodes.
研究不足
The study focuses on neutral and acidic media for the stability of Prussian blue type coordination polymers. The long-term stability and performance under varying environmental conditions were not extensively explored.
1：Experimental Design and Method Selection:
The study involves the fabrication of Zr-doped BiVO4 photoanodes followed by a two-step process for coating with NiFe based Prussian blue (NiFePB) polymer. The method includes electrodeposition of nickel and subsequent dipping into potassium ferricyanide solution.
2：Sample Selection and Data Sources:
Zr-doped BiVO4 photoanodes were prepared on FTO-coated glass. The NiFePB coating was optimized by varying deposition charge and dipping time.
3：List of Experimental Equipment and Materials:
Field emission scanning electron microscopy (FE-SEM), high-resolution transmission electron microscope (HR-TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), ultraviolet-visible (UV-vis) spectrophotometer, Fourier transform infrared absorption spectroscopy (FT-IR), AutoLab potentiostat, photocurrent spectroscopy system, oxygen analyzer.
4：Experimental Procedures and Operational Workflow:
The process includes electrodeposition of Bi on FTO-coated glass, reaction with vanadyl acetylacetonate, electrodeposition of nickel, and dipping into potassium ferricyanide solution. Characterization was performed using various techniques to analyze morphology, composition, structure, and optical properties.
5：Data Analysis Methods:
The study includes calculation of incident photon to current conversion efficiency (IPCE), light harvesting efficiency (LHE), charge transfer efficiency (η_ct), and charge separation efficiency (η_cs). Electrochemical impedance spectroscopy (EIS) was used to investigate charge transfer.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容-
X-ray diffraction system
Miniflex 600
Rigaku
Structural analysis
-
X-ray photoelectron spectroscopy
JPS-9200
JEOL
Surface analysis
-
Ultraviolet-visible spectrophotometer
UV-2600
Shimadzu
Optical properties determination
-
Fourier transform infrared absorption spectroscopy
Tensor 27
Bruker
FT-IR measurements
-
Field emission scanning electron microscopy
JSM-7000F
JEOL
Characterization of morphology and composition
-
High-resolution transmission electron microscope
JEM-2100
JEOL
Characterization of morphology at high resolution
-
AutoLab potentiostat
PGSTAT30
Photoelectrochemical characterization
-
Photocurrent spectroscopy system
Instytut Fotonowy
Incident photon to current conversion efficiency (IPCE) measurements
-
Oxygen analyzer
Oxysense 325i
Monitoring PEC oxygen evolution
-
登录查看剩余7件设备及参数对照表
查看全部
