Bismuth vanadium oxide as photoanode in tandem photoelectrochemical (PEC) cells: Challenges, strategies and future prospects

Materials Science in Semiconductor Processing, Journal Year: 2025, Volume and Issue: 194, P. 109537 - 109537

Published: April 8, 2025

Language: Английский

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Heteroepitaxial Growth of Narrow Band Gap Carbon-Rich Carbon Nitride Using In Situ Polymerization to Empower Sunlight-Driven Photoelectrochemical Water Splitting

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: March 19, 2025

We describe an in situ-polymerized conformal thin layer coating of narrow band gap carbon-rich carbon nitride (NBG-CRCN) on titania nanorod arrays to design a binary semiconductor heterojunction photocatalyst. The situ polymerization creates strong interaction between the TiO2 substrate and film, which prevents leaching CRCN liquid electrolytes. A unique aspect our work is developing easy inexpensive technique for heteroepitaxial growth mechanically photochemically stable films with intimate contact at CN:TNR interface. This method aids overcoming one main problems (CN), namely, inability produce evenly distributed CN substrate. synthesized NBG-CRCN@TNR extends visible light absorption 700 nm (Eg = 1.7 eV) red-shifts photoluminescence (PL) emission peak 580 nm. shifts broadening Raman spectra hybrid compared those TNR confirm unusually NBG-CRCN. An heteroepitaxially grow (002) rutile (110) confirmed by advanced characterization. High-resolution transmission electron microscopy (HRTEM), selected-area diffraction (SAED), grazing-incidence wide-angle X-ray scattering (GIWAXS) suggest (110). Under AM1.5G solar illumination, shows superior performance photoelectrochemical water splitting, generating photocurrent density as high 4.3 mA cm-2 1 M KOH under 0.6 V external bias, rising 8.4 presence hole scavenger (methanol). impressive hydrogen evolution rate 26.51 μmol h-1 88.12% Faradaic efficiency recorded. Establishing high-quality interface g-C3N4 permits effective charge carrier separation, leading enhanced photocatalytic activity.

Language: Английский

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Highly Durable Photoelectrode on the Bendable Yttria-Stabilized Zirconia Substrate for Efficient Photoelectrochemical Water Splitting

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

This work presents flexible, durable BiVO 4 /WO 3 photoanodes on a bendable yttria-stabilized zirconia substrate, achieving enhanced photocurrent density and stability under bending, for efficient photoelectrochemical water splitting.

Language: Английский

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Activity and stability boosting of BiVO4 photoanode by NH2-MIL-125 and NiFeOx cooperative modification for water oxidation

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: unknown, P. 114887 - 114887

Published: Nov. 1, 2024

Language: Английский

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