研究目的
To develop a facial and large scale compatible fabrication route for a high performance heterogeneous plasmonic-based photoelectrode for water oxidation that incorporates a CoFe-Prussian blue analog (PBA) structure as the water oxidation catalytic center.
研究成果
The simultaneous utilization of CoFe-Prussian blue water oxidation catalyst and disordered Au plasmonic nanounits has been proved to enhance the photoelectrochemical activity of the BiVO4 photoanode in an order of magnitude. The proposed facial and large scale compatible fabrication route can be adapted for a vast variety of high performance heterogeneous plasmonic-based photoelectrodes for water oxidation.
研究不足
The technical and application constraints of the experiments, as well as potential areas for optimization, are not explicitly mentioned in the provided text.
1：Experimental Design and Method Selection:
An angled deposition of gold (Au) was used to selectively coat the tips of the bismuth vanadate (BiVO4) nanostructures, yielding Au capped BiVO4 (Au-BiVO4). The formation of multiple size/dimension Au capping islands provides strong light-matter interaction at nanoscale dimensions.
2：4). The formation of multiple size/dimension Au capping islands provides strong light-matter interaction at nanoscale dimensions. Sample Selection and Data Sources:
2. Sample Selection and Data Sources: Bismuth vanadate (BiVO4) nanostructures are capped with Au particles using a shadowing effect of an oblique angle deposition.
3：List of Experimental Equipment and Materials:
Chemicals and materials include Bismuth(III) nitrate pentahydrate, p-benzoquinone, vanadyl acetylacetonate, potassium hexacyanoferrate(III), cobalt nitride hexahydrate, and Millipore deionized water.
4：Experimental Procedures and Operational Workflow:
The nanoporous BiVO4 photoanodes were prepared by the electrodeposition of bismuth oxyiodide (BiOI) film followed by dipping of vanadium solution and heat treatment.
5：Data Analysis Methods:
The optical characterization of the electrode was performed using UV-Visible spectra of the films in diffuse reflection mode and converted to absorption spectra by Kubelka-Munk transformation.
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