NiCo3-LDH catalysts decorated with p-n heterojunction CuCoO2/BiVO4 photoanodes for enhanced photoelectrochemical water oxidation
Source abstract
Abstract
Due to the suitable bandgap and valence band for photoelectrochemical (PEC) water oxidation, BiVO 4 has been regarded as a promising photoanode material. However, poor charge-separation and -transport behavior as well as sluggish surface oxygen evolution reaction (OER) kinetics caused the BiVO 4 photoanode for water splitting to be significantly lower than its theoretical value. In this study, the synergistic effect of constructing an n-BiVO 4/p-CuCoO 2 heterojunction and NiCo 3 -LDH as an OER cocatalyst was designed to enhance the PEC performance of BiVO 4 photoanode. The resultant BiVO 4/CuCoO 2/NiCo 3 -LDH demonstrates a maximum photocurrent density of 6.95 mA/cm 2 at 1.8 V vs. RHE, which is approximately 24.8 times that of BiVO 4 (0.28 mA/cm 2) and 5.5 times that of BiVO 4/CuCoO 2 (1.27 mA/cm 2) with good stability (70 % remained after 2 h of operation). This work broadens the construction strategy of photoanode heterojunctions to enhance PEC performance.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Copper-based nanomaterials and applications · TiO2 Photocatalysis and Solar Cells
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (43)
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