Co‐Implementing Optimized Volmer and Heyrovsky Reactions in Hydrogen Production via Composite Active Sites on Electron‐Withdrawing Carriers DOI
Lidong Wang,

Zi‐Wei Lu,

Yan‐Bing He

и другие.

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 19, 2025

Abstract The trade‐off of the Volmer reaction for *H formation and Heyrovsky/Tafel Reaction desorption is a crucial challenge in alkaline hydrogen evolution (HER). Thus, aside from conventional construction bifunctional active sites to accelerate water dissociation step, electronic retrimming each metal site also non‐negligible. Herein, an efficient HER electrocatalyst combining Pt single‐atoms nanoparticles on etched boron nitride (eBN) coated carbon nanotube (Pt‐eBN@CNT) synthesized, where both Heyrovsky steps are promoted by synergistic adsorption composite electron‐withdrawing effect eBN carrier, respectively. proposed catalyst shows impressive performance media with overpotential 25.1 ± 1.7 mV at 10 mA cm −2 , TOF 17.1 1.3 s −1 0.15 V vs RHE under extremely low loading 6 µg (catalyst 0.77 mg ), significantly better than those commercial benchmark Pt/C (44.2 4.1 mV, 0.9 0.1 ; 156.1 0.6 1.6 ) same conditions. Moreover, membrane‐electrode‐assembly (MEA) electrolyzer Pt‐eBN@CNT as cathodic exhibits notable charge transfer amount (stands long service life) 2.0 × C·cm within high‐temperature electrocatalysis 1.0 A·cm higher state‐of‐the‐art Pt‐based electrocatalysts. This work demonstrates important role active‐site combination coupled carrier optimizing kinetics multi‐step electrocatalytic reaction.

Язык: Английский

Rhenium-doped MoS2 3D-flower-like nanosheets on 2D-TiO2 core-shell for synergistic photocatalytic degradation of RhB under visible light. DOI
Juan Antonio Aliaga, Natalia Chamorro, Matías Alegría

и другие.

Materials Today Communications, Год журнала: 2025, Номер unknown, С. 111961 - 111961

Опубликована: Фев. 1, 2025

Язык: Английский

Процитировано

1

N-Doped Modified MoS2 for Piezoelectric–Photocatalytic Removal of Tetracycline: Simultaneous Improvement of Photocatalytic and Piezoelectric Properties DOI Open Access

Donghai Yuan,

Chao Guo, Yuting Ning

и другие.

Water, Год журнала: 2025, Номер 17(9), С. 1296 - 1296

Опубликована: Апрель 26, 2025

Piezoelectric and photocatalytic technologies use mechanical light energy to decompose environmental contaminants, demonstrating a beneficial synergistic impact. This investigation employs two-step hydrothermal-calcination technique synthesize N-doped MoS2 materials. The ideal catalyst, N-MoS2-3, utilizing the effect of piezoelectric–photocatalysis processes, attained TC degradation rate 90.8% in 60 min. kinetic constant (0.0374 min−1) is 1.75 times greater than combined rates single photocatalysis piezoelectric catalysis, indicating notable material has 80% efficiency after five cycles, its remarkable resilience. Mechanistic investigations reveal that nitrogen doping establishes an internal electric field by modulating S-Mo-S charge distribution. Photogenerated electrons move generate •O2−, while holes accumulate internally. ultrasound-induced polarization interacts with photogenerated reverse, thereby synergistically improving carrier separation facilitating redox processes. study emphasizes viability non-metal as method for modifying properties two-dimensional materials, offering novel approach enhance attributes technology possesses significant promise restoration through utilization solar energy.

Язык: Английский

Процитировано

0

Research progress of MoS2-based electrode materials in electrocatalytic hydrogen evolution: from synthesis, characterization to electrocatalytic performance optimization strategy DOI
Rui Su, Xiaojing Zhu, Ligui Li

и другие.

International Journal of Hydrogen Energy, Год журнала: 2025, Номер 137, С. 26 - 72

Опубликована: Май 11, 2025

Язык: Английский

Процитировано

0

Co‐Implementing Optimized Volmer and Heyrovsky Reactions in Hydrogen Production via Composite Active Sites on Electron‐Withdrawing Carriers DOI
Lidong Wang,

Zi‐Wei Lu,

Yan‐Bing He

и другие.

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 19, 2025

Abstract The trade‐off of the Volmer reaction for *H formation and Heyrovsky/Tafel Reaction desorption is a crucial challenge in alkaline hydrogen evolution (HER). Thus, aside from conventional construction bifunctional active sites to accelerate water dissociation step, electronic retrimming each metal site also non‐negligible. Herein, an efficient HER electrocatalyst combining Pt single‐atoms nanoparticles on etched boron nitride (eBN) coated carbon nanotube (Pt‐eBN@CNT) synthesized, where both Heyrovsky steps are promoted by synergistic adsorption composite electron‐withdrawing effect eBN carrier, respectively. proposed catalyst shows impressive performance media with overpotential 25.1 ± 1.7 mV at 10 mA cm −2 , TOF 17.1 1.3 s −1 0.15 V vs RHE under extremely low loading 6 µg (catalyst 0.77 mg ), significantly better than those commercial benchmark Pt/C (44.2 4.1 mV, 0.9 0.1 ; 156.1 0.6 1.6 ) same conditions. Moreover, membrane‐electrode‐assembly (MEA) electrolyzer Pt‐eBN@CNT as cathodic exhibits notable charge transfer amount (stands long service life) 2.0 × C·cm within high‐temperature electrocatalysis 1.0 A·cm higher state‐of‐the‐art Pt‐based electrocatalysts. This work demonstrates important role active‐site combination coupled carrier optimizing kinetics multi‐step electrocatalytic reaction.

Язык: Английский

Процитировано

0