High-performance BiVO<sub>4</sub> photoanodes: elucidating the combined effects of Mo-doping and modification with cobalt polyoxometalate

Feng, Fan; Mitoraj, Dariusz; Gong, Ruihao; Gao, Dandan; Elnagar, Mohamed M.; Liu, Rongji; Beranek, Radim; Streb, Carsten

doi:10.1039/d4ma00089g

Mater. Adv.

2024

DOI: 10.1039/d4ma00089g

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High-performance BiVO₄ photoanodes: elucidating the combined effects of Mo-doping and modification with cobalt polyoxometalate

Fan Feng,

Dariusz Mitoraj,

Ruihao Gong

et al.

Abstract: Doping and surface-modification by co-catalysts are well-established strategies for the performance enhancement of bismuth vanadate (BiVO4) photoanodes for photoelectrochemical (PEC) water splitting devices. However, our knowledge of the complex effects...

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Cited by 4 publications

References 94 publications

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Controllable fabrication of Cu:BiVO4 nanostructures via a two-step electrodeposition strategy for efficient photoelectrochemical water splitting

Wan,

Luo,

et al. 2025

Journal of Alloys and Compounds

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Controllable fabrication of Cu:BiVO4 nanostructures via a two-step electrodeposition strategy for efficient photoelectrochemical water splitting

Wan,

Luo,

et al. 2025

Journal of Alloys and Compounds

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Vacancy-Engineered 1D Nanorods with Spatially Segregated Dual Redox Sites for Visible-Light-Driven Cooperative CO₂ Reduction

Kumar,

Saini,

Sethi

et al. 2024

ACS Appl. Mater. Interfaces

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Cooperative CO2 photoreduction with tailored organic synthesis offers a potent avenue for harnessing concurrently generated electrons and holes, facilitating the creation of both solar fuels and specialized chemical compounds. However, controlling the crystallization and morphologies of metal-free molecular nanostructures with exceptional photocatalytic activities toward CO2 reduction remains a significant challenge. These hurdles encompass insufficient CO2 activation potential, sluggish multielectron processes, delayed charge-separation kinetics, inadequate storage of long-lived photoexcitons, unfavorable thermodynamic conditions, and the precise control of product selectivity. Here, melem oligomer 2D nanosheets (MNSs) synthesized through pyrolysis are transformed into 1D nanorods (MNRs) at room temperature with the simultaneous engineering of vacancies and morphology. Transient absorption spectral analysis reveals that vacancies in MNRs trap charges, extending charge carrier lifetimes. Additionally, carbon vacancies enhance CO2 adsorption by increasing amine functional centers. The photocatalytic performance of MNRs for CO2 reduction coupled with benzyl alcohol oxidation is approximately ten times higher (CH3OH and aromatic aldehyde production rate 27 ± 0.5 and 93 ± 0.5 mmol g–1 h–1, respectively) than for the MNSs (CH3OH and aromatic aldehyde production rate 2.9 ± 0.5 and 9 ± 0.5 mmol g–1 h–1, respectively). The CO2 reduction pathway involved the carbon-coordinated formyl pathway through the formation of *COOH and *CHO intermediates, as mapped by in situ Fourier-transform infrared spectroscopy. The superior performance of MNRs is attributed to favorable energy-level alignment, enriched amine surfaces, and unique morphology, enhancing solar-to-chemical conversion.

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“Double-Use” Strategy for Improving the Photoelectrochemical Performance of BiVO₄ Photoanodes Using a Cobalt-Functionalized Polyoxotungstate

Feng,

Mitoraj,

Oseghe

et al. 2024

ACS Appl. Mater. Interfaces

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High-performance BiVO₄ photoanodes: elucidating the combined effects of Mo-doping and modification with cobalt polyoxometalate

Abstract: Doping and surface-modification by co-catalysts are well-established strategies for the performance enhancement of bismuth vanadate (BiVO4) photoanodes for photoelectrochemical (PEC) water splitting devices. However, our knowledge of the complex effects...

Cited by 4 publications

References 94 publications

Controllable fabrication of Cu:BiVO4 nanostructures via a two-step electrodeposition strategy for efficient photoelectrochemical water splitting

Controllable fabrication of Cu:BiVO4 nanostructures via a two-step electrodeposition strategy for efficient photoelectrochemical water splitting

Vacancy-Engineered 1D Nanorods with Spatially Segregated Dual Redox Sites for Visible-Light-Driven Cooperative CO₂ Reduction

“Double-Use” Strategy for Improving the Photoelectrochemical Performance of BiVO₄ Photoanodes Using a Cobalt-Functionalized Polyoxotungstate

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High-performance BiVO4 photoanodes: elucidating the combined effects of Mo-doping and modification with cobalt polyoxometalate

Abstract: Doping and surface-modification by co-catalysts are well-established strategies for the performance enhancement of bismuth vanadate (BiVO4) photoanodes for photoelectrochemical (PEC) water splitting devices. However, our knowledge of the complex effects...

Cited by 4 publications

References 94 publications

Controllable fabrication of Cu:BiVO4 nanostructures via a two-step electrodeposition strategy for efficient photoelectrochemical water splitting

Controllable fabrication of Cu:BiVO4 nanostructures via a two-step electrodeposition strategy for efficient photoelectrochemical water splitting

Vacancy-Engineered 1D Nanorods with Spatially Segregated Dual Redox Sites for Visible-Light-Driven Cooperative CO2 Reduction

“Double-Use” Strategy for Improving the Photoelectrochemical Performance of BiVO4 Photoanodes Using a Cobalt-Functionalized Polyoxotungstate

Contact Info

Product

Resources

About

High-performance BiVO₄ photoanodes: elucidating the combined effects of Mo-doping and modification with cobalt polyoxometalate

Vacancy-Engineered 1D Nanorods with Spatially Segregated Dual Redox Sites for Visible-Light-Driven Cooperative CO₂ Reduction

“Double-Use” Strategy for Improving the Photoelectrochemical Performance of BiVO₄ Photoanodes Using a Cobalt-Functionalized Polyoxotungstate