Tuning the surface states by in-situ Zr/Hf co-doping and MoO3 hole transport layer modification for boosting photoelectrochemical performance of hematite photoanode

Chemical Engineering Journal, Год журнала: 2023, Номер 472, С. 144998 - 144998

Опубликована: Июль 24, 2023

Язык: Английский

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Visible self-luminous indium-based metal–organic framework for electrochemiluminescence detection of Hg2+

Sensors and Actuators B Chemical, Год журнала: 2024, Номер 405, С. 135383 - 135383

Опубликована: Янв. 25, 2024

Язык: Английский

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Unveiling the promotion of dual-metal-atom Ir-Fe pair sites on charge transfer for photoelectrochemical water splitting

Matter, Год журнала: 2024, Номер 7(6), С. 2278 - 2293

Опубликована: Май 1, 2024

Язык: Английский

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Au-Cu dual-single-atom sites on Bi2WO6 with oxygen vacancy for CO2 photoreduction towards multicarbon products

Applied Catalysis B Environment and Energy, Год журнала: 2024, Номер 357, С. 124263 - 124263

Опубликована: Июнь 2, 2024

Язык: Английский

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Rapid Surface Reconstruction of In₂S₃ Photoanode via Flame Treatment for Enhanced Photoelectrochemical Performance

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Май 9, 2024

Abstract Surface reconstruction, reorganizing the surface atoms or structure, is a promising strategy to manipulate materials' electrical, electrochemical, and catalytic properties. Herein, rapid reconstruction of indium sulfide (In 2 S 3 ) demonstrated via high‐temperature flame treatment improve its charge collection The process selectively transforms In into diffusionless O layer with high crystallinity. Additionally, it controllably generates bulk sulfur vacancies within few seconds, leading surface‐reconstructed (sr‐In ). When using those sr‐In as photoanode for photoelectrochemical water splitting devices, these dual functions /bulk reduce recombination in region, thus improving photocurrent density stability. With optimized demonstrates significant 8.5 mA cm −2 at 1.23 V versus reversible hydrogen electrode (RHE), marking 2.5‐fold increase compared pristine (3.5 More importantly, exhibits an impressive 7.3 0.6 RHE iodide oxidation reaction. A practical scalable also showcased treatment. This work provides new insights engineering sulfide‐based semiconductors, making breakthrough developing efficient solar‐fuel energy devices.

Язык: Английский

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Interface-Engineered Ni-Coated CdTe Heterojunction Photocathode for Enhanced Photoelectrochemical Hydrogen Evolution

ACS Applied Materials & Interfaces, Год журнала: 2023, Номер 15(17), С. 21057 - 21065

Опубликована: Апрель 20, 2023

Photoelectrochemical (PEC) water splitting for hydrogen production using the CdTe photocathode has attracted much interest due to its excellent sunlight absorption property and energy band structure. This work presents a study of engineered interfacial energetics photocathodes by deposition CdS, TiO2, Ni layers. A heterostructure CdTe/CdS/TiO2/Ni was fabricated depositing 100-nm n-type CdS layer on p-type surface, with 50 nm TiO2 as protective 10 co-catalyst. The exhibits high photocurrent density (Jph) 8.16 mA/cm2 at 0 V versus reversible electrode (VRHE) positive-shifted onset potential (Eonset) 0.70 VRHE PEC evolution under 100 mW/cm2 AM1.5G illumination. We further demonstrate that CdTe/CdS p-n junction promotes separation photogenerated carriers, protects from corrosion, catalyst improves charge transfer across electrode/electrolyte interface. provides new insights designing noble metal-free toward solar development.

Язык: Английский

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Amorphous FeSnO_x Nanosheets with Hierarchical Vacancies for Room‐Temperature Sodium‐Sulfur Batteries

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(38)

Опубликована: Май 24, 2024

Room-temperature sodium-sulfur (RT Na-S) batteries, noted for their low material costs and high energy density, are emerging as a promising alternative to lithium-ion batteries (LIBs) in various applications including power grids standalone renewable systems. These commonly assembled with glass fiber membranes, which face significant challenges like the dissolution of polysulfides, sluggish sulfur conversion kinetics, growth Na dendrites. Here, we develop an amorphous two-dimensional (2D) iron tin oxide (A-FeSnO

Язык: Английский

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Toward Efficient Utilization of Photogenerated Charge Carriers in Photoelectrochemical Systems: Engineering Strategies from the Atomic Level to Configuration

Chemical Reviews, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 21, 2024

Photoelectrochemical (PEC) systems are essential for solar energy conversion, addressing critical and environmental issues. However, the low efficiency in utilizing photogenerated charge carriers significantly limits overall conversion. Consequently, there is a growing focus on developing strategies to enhance photoelectrode performance. This review systematically explores recent advancements PEC system modifications, spanning from atomic nanoscopic levels configuration engineering. We delve into relationships between structures, intrinsic properties, kinetics of carriers, their utilization. Additionally, we propose future directions perspectives more efficient systems, offering valuable insights potential innovations field.

Язык: Английский

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Optimizing Hot Electron Harvesting at Planar Metal–Semiconductor Interfaces with Titanium Oxynitride Thin Films

ACS Applied Materials & Interfaces, Год журнала: 2023, Номер 15(25), С. 30417 - 30426

Опубликована: Июнь 12, 2023

Understanding metal–semiconductor interfaces is critical to the advancement of photocatalysis and sub-bandgap solar energy harvesting where electrons in metal can be excited by photons extracted into semiconductor. In this work, we compare electron extraction efficiency across Au/TiO2 titanium oxynitride (TiON)/TiO2–x interfaces, latter case spontaneously forming oxide layer (TiO2–x) creates a contact. Time-resolved pump–probe spectroscopy used study recombination rates both cases. Unlike nanosecond lifetimes Au/TiO2, find bottleneck relaxation TiON system, which explain using trap-mediated model. Using model, investigate tunability dynamics with oxygen content parent film. The optimized film (TiO0.5N0.5) exhibits highest carrier (NFC ≈ 2.8 × 1019 m–3), slowest trapping, an appreciable hot population reaching surface (NHE 1.6 1018 m–3). Our results demonstrate productive role play enhancing prolonging lifetimes, providing interface only native oxynitride.

Язык: Английский

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ZnO quantum dots decorated TiO2 nanorod p-n heterojunction for efficient photoelectrocatalysis

Chemical Engineering Science, Год журнала: 2023, Номер 282, С. 119260 - 119260

Опубликована: Сен. 9, 2023

Язык: Английский

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