Pt-Based High-Entropy Alloy Nanoparticles as Bifunctional Electrocatalysts for Hydrogen and Oxygen Evolution DOI
Hao Chen,

Chaoqun Guan,

Hongbin Feng

et al.

ACS Applied Nano Materials, Journal Year: 2022, Volume and Issue: 5(7), P. 9810 - 9817

Published: July 5, 2022

Pt-based high-entropy alloys (HEA) enable high-performance electrocatalysts with a low Pt content. However, the current synthesis methods of HEAs suffer from complex processes, such as high temperatures or special manufacturing processes. In this work, bottom-up shear-assisted liquid metal surface reduction strategy is introduced for sub-2 nm ultrasmall HEA nanoparticles (NPs) at room temperature. To prove its utility, Co–Fe–Ni–Pt–Ta–vxc72 was found to exhibit excellent electrocatalytic activity and stability both hydrogen evolution reaction (HER) oxygen (OER) overpotentials 10.6 290 mV 10 mA/cm2, respectively. At same time, in reactions, can reach 20 h according chronoamperometry. We expect that many nano-HEAs will be synthesized by our method used other related applications future.

Language: Английский

Structure–property–performance relationship of vanadium- and manganese-based metal–organic frameworks and their derivatives for energy storage and conversion applications DOI
Reza Abazari,

Soheila Sanati,

Ashok Kumar Nanjundan

et al.

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(19), P. 11149 - 11175

Published: Jan. 1, 2024

The current review discusses on vanadium- and manganese-based metal–organic frameworks their derivatives for energy storage conversion applications along with the potential future advancements in these fields.

Language: Английский

Citations

78
Non-Calcined Layer-Pillared Mn0.5Zn0.5 Bimetallic–Organic Framework as a Promising Electrocatalyst for Oxygen Evolution Reaction DOI Creative Commons

Reza Abazari,

Ali Reza Amani‐Ghadim, Alexandra M. Z. Slawin

et al.

Inorganic Chemistry, Journal Year: 2022, Volume and Issue: 61(25), P. 9514 - 9522

Published: June 14, 2022

Electrocatalytic generation of oxygen is great significance for sustainable, clean, and efficient energy production. Multiple electron transfer in evolution reaction (OER) its slow kinetics represent a serious hedge water splitting, requiring the design development advanced electrocatalysts with porous structures, high surface areas, abundant electroactive sites, low overpotentials. These requisites are common metal-organic frameworks (MOFs) derived materials that promising OER. The present work reports on synthesis full characterization heteroleptic 3D MOF, [Zn2(μ4-odba)2(μ-bpdh)]n·nDMF (Zn-MUM-1), assembled from 4,4'-oxydibenzoic acid 2,5-bis(4-pyridyl)-3,4-diaza-2,4-hexadiene (bpdh). Besides, series heterometallic MnZn-MUM-1 (abbreviated as Mn0.5Zn0.5-MUM-1, Mn0.66Zn0.33-MUM-1, Mn0.33Zn0.66-MUM-1) was also prepared, characterized, used fabrication working electrodes based Ni foam (NF), followed by their exploration noble-metal-free robust stable do not require pyrolysis or calcination while exhibiting better electrocatalytic performance than parent Zn-MUM-1/NF electrode. experimental results show Mn0.5Zn0.5-MUM-1/NF electrocatalyst features best OER activity overpotential (253 mV at 10 mA cm-2) Tafel slope (73 dec-1) well significant stability after 72 h 6000 cycles. excellent explained synergic effect two different metals Mn-Zn MOF improved charge ion transfer, conductivity, characteristics. study thus widens application MOFs prospective highly

Language: Английский

Citations

75
Constructing Nitrogen‐Doped Carbon Hierarchy Structure Derived from Metal‐Organic Framework as High‐Performance ORR Cathode Material for Zn‐Air Battery DOI Open Access
Yangdan Pan, Junkuo Gao,

Yuwen Li

et al.

Small, Journal Year: 2023, Volume and Issue: 20(3)

Published: Sept. 10, 2023

Abstract The development of efficient and low‐cost catalysts for cathodic oxygen reduction reaction (ORR) in Zn‐air battery (ZAB) is a key factor reducing costs achieving industrialization. Here, novel segregated CoNiPt alloy embedded N‐doped porous carbon with nanoflowers (NFs)‐like hierarchy structure synthesized through pyrolyzing Hofmann‐type metal‐organic frameworks (MOFs). unique hierarchical NFs exposes more active sites facilitates the transportation intermediates, thus accelerating kinetics. Impressively, resulting 15% CoNiPt@C catalyst exhibits outstanding alkaline ORR activity half‐wave potential 0.93 V, its mass 7.5 times higher than that commercial Pt/C catalyst, surpassing state‐of‐the‐art noble metal‐based catalysts. Furthermore, assembled CoNiPt@C+RuO2 ZAB demonstrates maximum power density 172 mW cm −2 , which superior to Pt/C+RuO2 ZAB. Experimental results reveal intrinsic attributed synergistic interaction between defects pyrrolic/graphitic N species, optimizes adsorption energy intermediate species process greatly enhances catalytic activity. This work provides practical feasible strategy synthesizing cost‐effective by optimizing electronic MOF‐derived

Language: Английский

Citations

68
Scalable synthesis of MOF-derived Nd2O3@C and V2O5@C nanohybrid: Efficient electrocatalyst for OER in alkaline medium DOI Open Access
Tauseef Munawar,

Ambreen Bashir,

Muhammad Shahid Nadeem

et al.

Fuel, Journal Year: 2023, Volume and Issue: 355, P. 129485 - 129485

Published: Aug. 18, 2023

Language: Английский

Citations

52
Metal-organic framework-based materials as key components in electrocatalytic oxidation and reduction reactions DOI

Soheila Sanati,

Ali Morsali, Hermenegildo Garcı́a

et al.

Journal of Energy Chemistry, Journal Year: 2023, Volume and Issue: 87, P. 540 - 567

Published: Sept. 6, 2023

Language: Английский

Citations

52
Green hydrogen production pathways for sustainable future with net zero emissions DOI

Diya Agrawal,

Navya Mahajan,

Satyapaul A. Singh

et al.

Fuel, Journal Year: 2023, Volume and Issue: 359, P. 130131 - 130131

Published: Nov. 24, 2023

Language: Английский

Citations

51
Recent developments in transition metal-based MOFs for electrocatalytic water splitting emphasizing fundamental and structural aspects DOI Open Access
Ragunath Madhu, Arun Karmakar, Krishnendu Bera

et al.

Materials Chemistry Frontiers, Journal Year: 2023, Volume and Issue: 7(11), P. 2120 - 2152

Published: Jan. 1, 2023

In this review, recent advancement of MOF based materials and their role towards OER is explored. Tuning structures by adopting various synthetic strategical techniques are discussed for the first time.

Language: Английский

Citations

49
Recent Advances in Pristine Iron Triad Metal–Organic Framework Cathodes for Alkali Metal‐Ion Batteries DOI
Chao Li,

Yuquan Yuan,

Min Yue

et al.

Small, Journal Year: 2024, Volume and Issue: 20(23)

Published: Jan. 4, 2024

Abstract Pristine iron triad metal–organic frameworks (MOFs), i.e., Fe‐MOFs, Co‐MOFs, Ni‐MOFs, and heterometallic MOFs, are utilized as versatile promising cathodes for alkali metal‐ion batteries, owing to their distinctive structure characteristics, including modifiable designable composition, multi‐electron redox‐active sites, exceptional porosity, stable construction facilitating rapid ion diffusion. Notably, pristine MOFs have recently achieved significant milestones in electrochemical energy storage due properties. Here, the recent advances batteries summarized. The redox reaction mechanisms essential strategies boost behaviors associated devices also explored. Furthermore, insights into future prospects related lithium‐ion, sodium‐ion, potassium‐ion delivered.

Language: Английский

Citations

31
Decorating Cu Nanoparticles with Pd Clusters for Enhanced Nitrile Electro-Hydrogenation to Primary Amines by Effective Hydrogen Spillover DOI
Peipei Zhu,

Mingzhu Shi,

Bing Wu

et al.

ACS Catalysis, Journal Year: 2025, Volume and Issue: unknown, P. 1341 - 1351

Published: Jan. 7, 2025

The H2O-participating electrochemical hydrogenation (ECH) of benzonitrile represents a mild and efficient method for benzylamine synthesis, but the kinetics Faraday efficiency are still limited. Herein, developed Pd clusters dispersed Cu nanoparticles encapsulated in porous carbon (Pdn-Cu@C) achieves ECH (C6H5CN) to benzylamines (C6H5CH2NH2). In situ infrared spectroscopy theoretical studies reveal that Pd/Cu interface functions as active site hydrogen (*H) generated by H2O dissociation, enhances adsorption C6H5CN, weakens C6H5CH2NH2. Moreover, Gibbs free energy barriers *H spillover much lower than self-coupling. As expected, Pdn-Cu@C exhibits electro-hydrogenation C6H5CN with conversion 97.42%, high C6H5CH2NH2 selectivity 97.21%, Faradaic 92.10% under specific voltage. This finding blazes feasible trail suppress competitive self-coupling offers insights multistep protonation reactions.

Language: Английский

Citations

2
Instantaneous Sonophotocatalytic Degradation of Tetracycline over NU-1000@ZnIn2S4 Core–Shell Nanorods as a Robust and Eco-friendly Catalyst DOI

Reza Abazari,

Soheila Sanati,

Ali Morsali

et al.

Inorganic Chemistry, Journal Year: 2021, Volume and Issue: 60(13), P. 9660 - 9672

Published: June 23, 2021

The universal pollution of diverse water bodies and declined quality represent very important environmental problems. development new efficient photocatalytic treatment systems based on the Z-scheme mechanisms can contribute to tackling such This study reports preparation, full characterization, detailed sonophotocatalytic activity a series hybrid NU@ZIS nanocomposites, which comprise p–n heterojunction 3D Zr(IV) metal–organic framework nanorods (NU-1000) photoactive ZnIn2S4 (ZIS) nanostars. Among obtained materials with varying content ZIS (5, 10, 20, 30%) surface NU-1000, NU@ZIS20 nanocomposite revealed an ultrahigh catalytic performance recyclability in quick visible-light-induced degradation tetracycline antibiotic under conditions. Moreover, increased be ascribed formation between NU-1000 ZIS, synergistic effect these components, leading high level radical production, facilitating charge carrier transfer reducing recombination carriers. trapping tests that •OH, •O2–, h+ are major active species tetracycline. Possible mechanism mineralization pathways were introduced. Cytotoxicity aquatic toxicity samples after also assessed, showing good biocompatibility catalyst efficacy protocols produce does not affect growth bacteria. Finally, nanocomposites developed processes interesting approach toward applications remediation elimination other types organic pollutants.

Language: Английский

Citations

68