Rapid Flame Synthesis of Highly Efficient CuO-CuBi2O4 Heterojunction Photocathode for Improved Charge Separation and Light Capture Efficiency DOI

Bo Lei,

Xueyang Leng,

Jinlong Bai

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 17(1), P. 1191 - 1200

Published: Dec. 24, 2024

The rapid flame annealing (FA) method has the advantages of convenience and rapidity with an instantaneous temperature rise fall process. In this work, influence duration on front side back CuBi2O4-based photocathodes was investigated, photoelectrodes variable compositions were obtained. A highly efficient CuO@CuO/CuBi2O4 photoelectrode successfully obtained via a two-step FA within few seconds. Excellent hydrogen evolution reaction performance photocurrent 2.3 mA cm–2 @ 0.2 VRHE in 0.1 M Na2SO4 (2.35 0.6 KOH) electrolyte obtained, which is highest neutral without trapping agent so far. light capture efficiency greatly improved by introduction CuO, formed heterojunction CuBi2O4 to promote charge separation ability. Our work shows universality fabrication materials, especially for temperature-sensitive compositions.

Language: Английский

Unveiling a Cooperative Mechanism for the Alkaline Hydrogen Evolution Reaction: Role of Built‐in Electric Field DOI Open Access

Krishankant,

Raj Kishor Bisht, Alok Kumar

et al.

Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 18, 2025

Abstract The work function has a significant influence on surface charge distribution, particularly when built‐in electric field (BIEF) is present. Recent research focused leveraging BIEFs at the interface of different electronic environments to improve hydrogen production. Therefore, analyzing and correlating parameters such as function, BIEF, Gibbs free energy crucial for understanding reaction mechanism. Herein, p‐n heterojunction CuO‐CuWO 4 created form moderate space‐charge region interface. (∆G) in depletion regime displays behavior that contrasts with bulk region, facilitating evolution (HER). Along interface, ∆G indicates high adsorption affinity protons toward CuO phase desorption CuWO phase. catalyst effectively fine‐tunes its value relative coverage exhibits negative cooperative effect. shows up 80% coverage, maintains proton (−1.05 eV), which gradually decreases −0.05 eV 100% coverage. surpassed commercial Pt/C, demonstrating higher efficiency achieving current density 10 mA cm − 2 an overpotential just 21 mV.

Language: Английский

Citations

1
Floating BiOBr/Ti3C2 aerogel spheres for efficient degradation of quinolone antibiotics: Rapid oxygen transfer via triphase interface and effective charges separation by internal electric field DOI
Jing Sun,

Linxing Wang,

T. C. Huang

et al.

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 685, P. 813 - 825

Published: Jan. 23, 2025

Language: Английский

Citations

0
In-situ structural modification on spinel oxide to achieve efficient removal of refractory organics: Triple optimisation of degradation performance DOI
Yaoning Chen, Wenqing Zhou, Yuanping Li

et al.

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 686, P. 471 - 486

Published: Jan. 29, 2025

Language: Английский

Citations

0
Preparation and Deep-ultraviolet Photoelectric Properties of Ga2O3 Nanorod Arrays/CuGaO2 Nanosheets Composite Films DOI

Chenyuan Chai,

Jingshan Hou,

Shuang He

et al.

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 179857 - 179857

Published: March 1, 2025

Language: Английский

Citations

0
Recent Advances of Ruthenium‐Based Electrocatalysts for Industrial Water Electrolyzers DOI
Wentao Zhou,

Chen Gu,

Lingbin Xie

et al.

Advanced Sustainable Systems, Journal Year: 2025, Volume and Issue: unknown

Published: April 10, 2025

Abstract Hydrogen production by electrochemical water splitting is considered to be a key strategic energy technology, and proton exchange membrane electrolyzers (PEMWEs) anion (AEMWEs) are ideal technologies for green hydrogen in recent years. However, PEMWEs AEMWEs lack low‐cost high‐performance acidic oxygen evolution reaction (OER) alkaline (HER) electrocatalysts respectively, limiting their large‐scale development. Recently, ruthenium (Ru)‐based have received lot of attention because activity better than that commercial catalysts price more affordable, showing great potential OER HER. there still obstacles Ru‐based practical applications industrial electrolyzers, regulatory strategies need developed further optimize its performance. Herein, comprehensive review presented concerning it. First, fundamental principles focus the basic content application discussed. Then, summarized, providing detailed analysis elucidate mechanisms, properties, electrolyzers. Finally, outlooks prospects challenges future proposed.

Language: Английский

Citations

0
Rapid Flame Synthesis of Highly Efficient CuO-CuBi2O4 Heterojunction Photocathode for Improved Charge Separation and Light Capture Efficiency DOI

Bo Lei,

Xueyang Leng,

Jinlong Bai

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 17(1), P. 1191 - 1200

Published: Dec. 24, 2024

The rapid flame annealing (FA) method has the advantages of convenience and rapidity with an instantaneous temperature rise fall process. In this work, influence duration on front side back CuBi2O4-based photocathodes was investigated, photoelectrodes variable compositions were obtained. A highly efficient CuO@CuO/CuBi2O4 photoelectrode successfully obtained via a two-step FA within few seconds. Excellent hydrogen evolution reaction performance photocurrent 2.3 mA cm–2 @ 0.2 VRHE in 0.1 M Na2SO4 (2.35 0.6 KOH) electrolyte obtained, which is highest neutral without trapping agent so far. light capture efficiency greatly improved by introduction CuO, formed heterojunction CuBi2O4 to promote charge separation ability. Our work shows universality fabrication materials, especially for temperature-sensitive compositions.

Language: Английский

Citations

0