The synergistic effect of CuBi2O4 and Co-Pi: improving the PEC activity of BiVO4-based composite materials

Li, Rui; Wang, Dong; Han, Changcun; Wang, Pan; Tong, Zhengfu; Tan, Baohua; Liu, Zhifeng

doi:10.1039/d1nj05152k

Cited by 7 publications

(1 citation statement)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is because pure BiVO 4 has the disadvantages of slow electron transfer, low separation rate of photogenerated carriers, rapid recombination of photogenerated carriers, and slow water oxidation kinetics [13]. Many methods have been proposed to solve these problems, such as ion doping, oxygen vacancy, morphology engineering, heterojunction and cocatalysts [14][15][16][17][18]. In addition to these methods, the BiVO 4 loading of NM NPs such as Ag and Au is also highly feasible.…”

Section: Introductionmentioning

confidence: 99%

Surface Plasmon Resonance Effect of Noble Metal (Ag and Au) Nanoparticles on BiVO4 for Photoelectrochemical Water Splitting

Zhan

Wang

et al. 2023

Inorganics

Self Cite

View full text Add to dashboard Cite

Photoelectrochemical (PEC) splitting water technology over the years has gradually matured, and now photoanodes loaded with nanoparticles (NPs) show excellent PEC performance. Each of the metal NPs has a different effect on the PEC performance of BiVO4. This work selected the noble metals Ag and Au to modify BiVO4 and study its PEC performance. After recombination, the photocurrent densities of Ag/BiVO4 and Au/BiVO4 photoanodes were 3.88 mA/cm2 and 1.61 mA/cm2 at 1.23 VRHE, which were 3.82 and 1.72 times that of pure BiVO4. The hydrogen evolution of pure BiVO4 is about 1.10 μmol·cm−2. Ag/BiVO4 and Au/BiVO4 contain 3.56 and 2.32 times pure BiVO4, respectively. Through the research, it was found that the composite noble metal (NM) NPs could improve the PEC properties; this is because NM NPs can introduce a surface plasmon resonance (SPR) effect to increase the concentration and accelerate the separation of carriers. The mechanism of the SPR effect can be explained as NM NPs are excited by light generating “hot electrons”, and the hot electrons can directly enter the conduction band (CB) of BiVO4 through an electron transfer mechanism. The potential energy of the Schottky barrier generated by the contact of NM NPs with BiVO4 is smaller than that generated by the SPR effect, which enables the “hot electrons” to be smoothly transferred from the NM NPs to the conduction band of BiVO4 without returning to the NM NPs. Ag/BiVO4 showed higher PEC activity than Au/BiVO4 because of its higher light absorption, photocurrent, and oxygen evolution capacity. It can be seen that loading NM NPs increases the concentration of the carriers while the separation and transfer rates of the carriers are improved. In conclusion, it was concluded from this study that the loading of NM NPs is an effective method to improve the water oxidation kinetics of BiVO4 photoanodes.

show abstract

Section: Introductionmentioning

confidence: 99%

Surface Plasmon Resonance Effect of Noble Metal (Ag and Au) Nanoparticles on BiVO4 for Photoelectrochemical Water Splitting

Zhan

Wang

et al. 2023

Inorganics

Self Cite

View full text Add to dashboard Cite

show abstract

Cobalt phosphate co-catalysts and boron-doped ZnIn2S4 nanosheets for efficient photocatalytic hydrogen conversion

Liu,

Ye,

Zhao

et al. 2024

International Journal of Hydrogen Energy

View full text Add to dashboard Cite

BiVO4/CuBi2O4 heterojunction photoanodes with enhanced charge separation for efficient photoelectrochemical water splitting

Song,

Zhang,

et al. 2024

Materials Science and Engineering: B

View full text Add to dashboard Cite

The synergistic effect of CuBi₂O₄ and Co-Pi: improving the PEC activity of BiVO₄-based composite materials

Abstract: Reducing the reaction barrier on the photoelectrode surface and increasing the water oxidation power of the sample surface are the key issues to improve the photoelectrochemical (PEC) water splitting performances....

Cited by 7 publications

References 36 publications

Surface Plasmon Resonance Effect of Noble Metal (Ag and Au) Nanoparticles on BiVO4 for Photoelectrochemical Water Splitting

Surface Plasmon Resonance Effect of Noble Metal (Ag and Au) Nanoparticles on BiVO4 for Photoelectrochemical Water Splitting

Cobalt phosphate co-catalysts and boron-doped ZnIn2S4 nanosheets for efficient photocatalytic hydrogen conversion

BiVO4/CuBi2O4 heterojunction photoanodes with enhanced charge separation for efficient photoelectrochemical water splitting

Contact Info

Product

Resources

About