Controlled Aggregation of Cobalt and Platinum Atoms via Plasma Treatment for Exceptional Hydrogen Evolution Reaction Activity DOI Open Access
Guoqing Zhang, Jiankun Li, Yixing Wang

et al.

Coatings, Journal Year: 2024, Volume and Issue: 14(12), P. 1569 - 1569

Published: Dec. 15, 2024

Designing and developing highly active, stable, cost-effective hydrogen evolution reaction (HER) catalysts is crucial in the field of water electrolysis. In this study, we utilize N-doped porous carbon (CoNC) derived from zeolite imidazole metal–organic frameworks (ZIF-67) as support prepare CoNC-Pt-IM-P via chemical impregnation (CoNC-Pt-IM) plasma treatment. Systematic analyses reveal that calcined CoNC with pyridinic nitrogen could serve a robust to strongly anchor PtCo nanoclusters, while argon treatment lead noticeable aggregation Co Pt atoms so alter electronic environment enhance intrinsic HER catalytic activity. exhibit outstanding activity toward HER, achieving an exceptionally low overpotential 31 mV at current density −10 mA cm−2 Tafel slope 36 dec−1. At 50 mV, its mass reaches 4.90 A mgPt−1, representing enhancements 1.5 times compared CoNC-Pt-IM 12.3 commercial 20 wt% Pt/C. Furthermore, it operate stably for over 110 h cm−2, demonstrating exceptional durability. This work uses achieve controllable their activity, which has advantage avoiding excessive particle commonly used method high-temperature calcination.

Language: Английский

Enhanced Cooperative Generalized Compressive Strain and Electronic Structure Engineering in W‐Ni3N for Efficient Hydrazine Oxidation Facilitating H2 Production DOI Open Access
Hongye Qin,

Guangliang Lin,

Jinyang Zhang

et al.

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

Published: Jan. 7, 2025

Abstract As promising bifunctional electrocatalysts, transition metal nitrides are expected to achieve an efficient hydrazine oxidation reaction (HzOR) by fine‐tuning electronic structure via strain engineering, thereby facilitating hydrogen production. However, understanding the correlation between strain‐induced atomic microenvironments and reactivity remains challenging. Herein, a generalized compressive strained W‐Ni 3 N catalyst is developed create surface with enriched states that optimize intermediate binding activate both water 2 H 4 . Multi‐dimensional characterizations reveal nearly linear evolution (HER) activity d‐band center of under state. Theoretically, enhances electron transfer capability at surface, increasing donation into antibonding orbitals adsorbed species, which accelerates HER HzOR. Leveraging modified from W incorporation, catalysts demonstrate outstanding performance, achieving overpotentials 46 mV for 10 mA cm −2 81 HzOR 100 Furthermore, achieves overall splitting low cell voltage 0.185 V 50 , maintaining stability ≈450 h. This work provides new insights dual engineering in design advanced catalysts.

Language: Английский

Citations

2
3D interconnected hollow network of Ni-Zn-Cu nanosheets with multifold nanotwins for enhanced hydrazine oxidation DOI
Wei Xia, Yuhan Zhou, Tianyao Wang

et al.

Applied Surface Science, Journal Year: 2025, Volume and Issue: 688, P. 162357 - 162357

Published: Jan. 10, 2025

Language: Английский

Citations

0
Emergence of Voronoi-Patterned Cellular Membranes via Confinement Transformation of Self-Assembled Metal–Organic Frameworks DOI

Xiangyun Xi,

Longfei Lv, Xiaoli Gong

et al.

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

Published: Feb. 12, 2025

The self-assembly of nanoparticles allows the fabrication complex, nature-inspired architectures. Among these, Voronoi tessellations─intricate patterns found in many natural systems such as insect wings and plant tissues─have broad implications across materials science, biology, geography. However, replicating these irregular yet organized features at nanoscale through nanoparticle remains challenging. Here, we introduce a confinement transformation method to generate two-dimensional (2D) by converting metal–organic frameworks, specifically zeolitic imidazolate framework-8 (ZIF-8), into layered hydroxides. process begins with ZIF-8 particles densely packed monolayers liquid–air interface, driven Marangoni effect. Subsequent Ni2+-induced etching converts floating monolayer freestanding membrane composed interconnected polygonal cells, closely resembling geometric characteristics tessellations. We systematically investigate parameters affecting particles, shedding light on mechanism governing pattern formation. Mechanical testing simulations demonstrate that resulting cellular membranes exhibit enhanced stress distribution crack resistance, attributed their Voronoi-patterned architecture. These robust, monolithic Ni-based hydroxides, when serving catalyst support materials, can synergistically enhance intrinsic activity Pt catalysts for alkaline hydrogen evolution reaction facilitating water dissociation. This work presents promising approach creating optimal management, superior mechanical properties, potential catalytic applications.

Language: Английский

Citations

0
Advancing polynary-atom catalysts: customization, preparation and utilization DOI
Beibei Li,

Conglei Xu,

Yifei Wang

et al.

Journal of Energy Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: March 1, 2025

Language: Английский

Citations

0
Transition Metal-Doped Cobalt Phosphide for Efficient Hydrazine Oxidation: A Density Functional Theory Study DOI
Zixin Zhou, Min Zhou, Xiaobin Liao

et al.

Physical Chemistry Chemical Physics, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

This study elucidates the catalytic mechanism of transition metal-doped CoP in hydrazine oxidation, revealing two distinct reaction pathways and demonstrating predictive role key intermediate N–NH 2 governing activity.

Language: Английский

Citations

0
Modeling carbon-free energy conversion systems: enhanced hydrazine-assisted hydrogen production with dual-electric-field effect on needle-like Ru/CoP catalysts DOI

Kang Ji,

Shiyu Wang,

Shuyun Yao

et al.

Energy & Environmental Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

The local electric field weakens the hydrogen-bond network and enhances H 2 O transport. built-in creates electron-deficient sites, improving adsorption of N 4 . Finally, a self-powered zero-carbon energy system was built.

Language: Английский

Citations

0
Electrocatalytic N–H bond transformations: a zero-carbon paradigm for sustainable energy storage and conversion DOI

Kang Ji,

Guixi Wang, Shiyu Wang

et al.

Chemical Communications, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Electrocatalytic zero-carbon energy systems based on the N–H bond have achieved a complete cycle of storage and conversion, providing guidance for application clean conversion.

Language: Английский

Citations

0
Efficient electrocatalytic hydrogenation of guaiacol via construction of electron-rich platinum active centers through alloying DOI
Peng Wang, Qiqi Dai, Danlu Zhang

et al.

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: unknown, P. 137778 - 137778

Published: May 1, 2025

Language: Английский

Citations

0
Exploring Single-Atom Catalysis for Hydrogen Evolution and Storage: A DFT Insight into First-Row Transition Metal-Porphyrin Complexes (Porph@TMs) DOI
Faheem Abbas,

Saleem Nawaz Khan,

Sadaf Bibi

et al.

Gas Science and Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 205646 - 205646

Published: April 1, 2025

Language: Английский

Citations

0
Controlled Aggregation of Cobalt and Platinum Atoms via Plasma Treatment for Exceptional Hydrogen Evolution Reaction Activity DOI Open Access
Guoqing Zhang, Jiankun Li, Yixing Wang

et al.

Coatings, Journal Year: 2024, Volume and Issue: 14(12), P. 1569 - 1569

Published: Dec. 15, 2024

Designing and developing highly active, stable, cost-effective hydrogen evolution reaction (HER) catalysts is crucial in the field of water electrolysis. In this study, we utilize N-doped porous carbon (CoNC) derived from zeolite imidazole metal–organic frameworks (ZIF-67) as support prepare CoNC-Pt-IM-P via chemical impregnation (CoNC-Pt-IM) plasma treatment. Systematic analyses reveal that calcined CoNC with pyridinic nitrogen could serve a robust to strongly anchor PtCo nanoclusters, while argon treatment lead noticeable aggregation Co Pt atoms so alter electronic environment enhance intrinsic HER catalytic activity. exhibit outstanding activity toward HER, achieving an exceptionally low overpotential 31 mV at current density −10 mA cm−2 Tafel slope 36 dec−1. At 50 mV, its mass reaches 4.90 A mgPt−1, representing enhancements 1.5 times compared CoNC-Pt-IM 12.3 commercial 20 wt% Pt/C. Furthermore, it operate stably for over 110 h cm−2, demonstrating exceptional durability. This work uses achieve controllable their activity, which has advantage avoiding excessive particle commonly used method high-temperature calcination.

Language: Английский

Citations

0