MoOx layer with abundant oxygen vacancies modified on Sn-doped α-Fe2O3 film for enhanced photoelectrochemical water oxidation performance

Pang, Tao; Guo, Ping; Xiao, Yequan; Li, Hongxing; Mo, Rong

doi:10.1007/s10854-023-10519-2

Cited by 5 publications

(1 citation statement)

References 43 publications

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“…While the spectra of the Fe 2 O 3 and the ZnO-Fe 2 O 3 samples are clearly composed of two main components with an intense low BE component centered between 530.5 and 530.6 eV and a smaller high BE at around 532 eV, upon Pd deposition, the high BE component significantly decreases in intensity (almost disappearing). While we attribute the low BE component to lattice oxygen in Fe 2 O 3 , ,− the high BE component is attributed to a combination of terminal hydroxyl groups and oxygen vacancies; − the latter is in agreement with our explanation for the Fe 2p peak narrowing upon Pd deposition. The presence of oxygen vacancies and subsequent decrease of vacancies with Pd nucleation are corroborated by the Fe 2p peak narrowing and pore size/volume decrease, vide supra .…”

Section: Resultssupporting

confidence: 87%

Modifying the Substrate-Dependent Pd/Fe₂O₃ Catalyst–Support Synergism with ZnO Atomic Layer Deposition

Shultz-Johnson,

Rahmani,

Frisch

et al. 2024

ACS Appl. Mater. Interfaces

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Low-loading Pd supported on Fe 2 O 3 nanoparticles was synthesized. A common nanocatalyst system with previously reported synergistic enhancement of reactivity that is attributed to the electronic interactions between Pd and the Fe 2 O 3 support. Fe 2 O 3 -selective precoalescence overcoating with ZnO atomic layer deposition (ALD), using Zn(CH 2 CH 3 ) 2 and H 2 O as precursors, dampens competitive hydrogenation reactivity at Fe 2 O 3 -based sites. The result is enhanced efficiency at the low-loading but high reactivity Pd sites. While this increases catalyst efficiency toward most aqueous redox reactions tested, it suppresses reactivity toward polyaromatic core substrates. X-ray photoelectron spectroscopy (XPS) and ultraviolet photoelectron spectroscopy (UPS) show minimal electronic impacts for the ZnO overcoat on the Pd particles, implying a predominantly physical site blocking effect as the reason for the modified reactivity. This serves as a proof-ofconcept of not only stabilizing supported nanocatalysts but also altering reactivity with ultrathin ALD overcoats. The results point to a facile ALD route for selective enhancement of reactivity for low-loading Pd-based supported nanocatalysts.

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Section: Resultssupporting

confidence: 87%

Modifying the Substrate-Dependent Pd/Fe₂O₃ Catalyst–Support Synergism with ZnO Atomic Layer Deposition

Shultz-Johnson,

Rahmani,

Frisch

et al. 2024

ACS Appl. Mater. Interfaces

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show abstract

Simultaneous enhancement of charge transfer and surface catalysis through a polymetallic oxide cocatalyst on BiVO4 photoanodes for highly efficient and stable water oxidation

Zhou,

Li,

Guo

et al. 2024

Chemical Engineering Journal

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Synergies of Zn/P-co-doped α-Fe2O3 photoanode for improving photoelectrochemical water splitting performance

Xia,

Zhang,

Chai

et al. 2024

International Journal of Hydrogen Energy

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MoOx layer with abundant oxygen vacancies modified on Sn-doped α-Fe2O3 film for enhanced photoelectrochemical water oxidation performance

Cited by 5 publications

References 43 publications

Modifying the Substrate-Dependent Pd/Fe₂O₃ Catalyst–Support Synergism with ZnO Atomic Layer Deposition

Modifying the Substrate-Dependent Pd/Fe₂O₃ Catalyst–Support Synergism with ZnO Atomic Layer Deposition

Simultaneous enhancement of charge transfer and surface catalysis through a polymetallic oxide cocatalyst on BiVO4 photoanodes for highly efficient and stable water oxidation

Synergies of Zn/P-co-doped α-Fe2O3 photoanode for improving photoelectrochemical water splitting performance

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MoOx layer with abundant oxygen vacancies modified on Sn-doped α-Fe2O3 film for enhanced photoelectrochemical water oxidation performance

Cited by 5 publications

References 43 publications

Modifying the Substrate-Dependent Pd/Fe2O3 Catalyst–Support Synergism with ZnO Atomic Layer Deposition

Modifying the Substrate-Dependent Pd/Fe2O3 Catalyst–Support Synergism with ZnO Atomic Layer Deposition

Simultaneous enhancement of charge transfer and surface catalysis through a polymetallic oxide cocatalyst on BiVO4 photoanodes for highly efficient and stable water oxidation

Synergies of Zn/P-co-doped α-Fe2O3 photoanode for improving photoelectrochemical water splitting performance

Contact Info

Product

Resources

About

Modifying the Substrate-Dependent Pd/Fe₂O₃ Catalyst–Support Synergism with ZnO Atomic Layer Deposition

Modifying the Substrate-Dependent Pd/Fe₂O₃ Catalyst–Support Synergism with ZnO Atomic Layer Deposition