Lanthanide-based F-MOFs: Structure, hydrolytic stability, spectral and magnetic properties DOI Creative Commons

D. Princík,

Vladimı́r Zeleňák, Róbert Gyepes

et al.

Journal of Solid State Chemistry, Journal Year: 2024, Volume and Issue: 339, P. 124949 - 124949

Published: Aug. 8, 2024

A series of five novel lanthanide-based fluorinated metal-organic frameworks (Ln-F-MOFs) have been synthesized under solvothermal conditions by the reaction 3,3′-bis(trifluoromethyl)-[1,1′-biphenyl]-4,4′-dicarboxylic acid (H2L) and lanthanide Ln(III) ions (Ln(III)La, Ce, Pr, Nd Eu). Powder X-ray diffraction (PXRD) analysis revealed that all prepared complexes are isostructural. single-crystal crystallographic study one representative isostructural group, namely {[La2(L)3(DMF)2(H2O)2]}n showed, compound crystallizes in a triclinic system with space group P-1. The lattice parameter values = 8.563(2) Å, b 13.199(3) c 16.008(4) α 104.588(7) °, β 92.904(7) ° γ 92.717(7) two formula units unit cell. overall structure is formed 2D polymeric layers, which arranged into semi-3D supramolecular through hydrogen bonds other intramolecular interactions. hydrophobic properties showed exhibit surface hydrophobicity "rose petal effect" contact angle approximately 107°. However, structures not hydrolytically stable long term starts to delaminate after days water. This manifestation fact do form 3D polymer network, it made up layers connected only weak non-bonding photoluminescence determined characteristic 5d-4f or 4f-4f electron transitions for individual ions. magnetic Nd(III), Pr(III) Eu(III) variants were studied. {[Pr2(L)3(DMF)2(H2O)2]}n characterized presence low-lying quasi-doublet 15.6 cm−1 energy splitting, whereas variant nonmagnetic at low temperatures, but 7F1 state accessible thermal excitation. For Nd(III) complex, X-band EPR measurements performed. Since 1D channels dimensions 4.90 × 7.23 Å2 present within structure, adsorption N2, CO2 H2 gases was also

Language: Английский

Bubble Engineering on Micro-/Nanostructured Electrodes for Water Splitting DOI
Mengxuan Li,

Pengpeng Xie,

Linfeng Yu

et al.

ACS Nano, Journal Year: 2023, Volume and Issue: 17(23), P. 23299 - 23316

Published: Nov. 21, 2023

Bubble behaviors play crucial roles in mass transfer and energy efficiency gas evolution reactions. Combining multiscale structures surface chemical compositions, micro-/nanostructured electrodes have drawn increasing attention. With the aim to identify exciting opportunities rationalize electrode designs, this review, we present our current comprehension of bubble engineering on electrodes, focusing water splitting. We first provide a brief introduction wettability electrodes. Then discuss advantages for (detailing lowered overpotential, promoted supply electrolyte, faster growth kinetics), localized electric field intensity, stability. Following that, outline strategies promoting detachment directional transportation. Finally, offer perspectives emerging future research directions.

Language: Английский

Citations

85
Review of next generation hydrogen production from offshore wind using water electrolysis DOI Creative Commons
Daniel Niblett, Mostafa Delpisheh, S. Ramakrishnan

et al.

Journal of Power Sources, Journal Year: 2023, Volume and Issue: 592, P. 233904 - 233904

Published: Dec. 8, 2023

Hydrogen produced using renewable energy from offshore wind provides a versatile method of storage and power-to-gas concepts. However, few dedicated floating electrolyser facilities currently exist therefore conditions the environment on hydrogen production cost efficiency remain uncertain. Therefore, this review focuses conversion electrical to hydrogen, water electrolysis located in areas. The challenges associated with remote locations, fluctuating power harsh are highlighted recommendations for future system designs suggested. latest research polymer electrolyte membrane, alkaline membraneless evaluated order understand their capital costs, current status achieving scaled manufacturing GW scale required next three decades. Operating fundamentals that govern performance each device investigated specifically integration electrolysers turbines is presented.

Language: Английский

Citations

71
Aqueous alternating electrolysis prolongs electrode lifespans under harsh operation conditions DOI Creative Commons
Jie Liang, Jun Li, Hongliang Dong

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: July 23, 2024

Abstract It is vital to explore effective ways for prolonging electrode lifespans under harsh electrolysis conditions, such as high current densities, acid environment, and impure water source. Here we report alternating approaches that realize promptly regularly repair/maintenance concurrent bubble evolution. Electrode are improved by co-action of Fe group elemental ions alkali metal cations, especially a unique Co 2+ -Na + combo. A commercial Ni foam sustains ampere-level densities alternatingly during continuous 93.8 h in an acidic solution, whereas completely dissolved ~2 conventional conditions. The work not only explores electrolysis-based system, cation-based catalytic systems, electrodeposition techniques, beyond, but demonstrates the possibility prolonged repeated deposition-dissolution processes. With enough adjustable experimental variables, upper improvement limit lifespan would be high.

Language: Английский

Citations

36
Gas Evolution in Water Electrolysis DOI
Paul A. Kempler, Robert H. Coridan, Long Luo

et al.

Chemical Reviews, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 11, 2024

Gas bubbles generated by the hydrogen evolution reaction and oxygen during water electrolysis influence energy conversion efficiency of production. Here, we survey what is known about interaction gas electrode surfaces on practicable devices used for electrolysis. We outline physical processes occurring life cycle a bubble, summarize techniques to characterize phenomena in situ practical device environments, discuss ways that electrodes can be tailored facilitate removal at high current densities. Lastly, review efforts model behavior individual multiphase flows produced gas-evolving electrodes. conclude our with short summary outstanding questions could answered future electrochemical environments or improved simulations flows.

Language: Английский

Citations

31
Catalytic electrode comprising a gas diffusion layer and bubble-involved mass transfer in anion exchange membrane water electrolysis: A critical review and perspectives DOI Creative Commons

Ning Yang,

Haonan Li, Xiao Lin

et al.

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

Published: Feb. 1, 2025

Language: Английский

Citations

6
Bioinspired Gas Manipulation for Regulating Multiphase Interactions in Electrochemistry DOI
Zhiyun Long, Cunming Yu, Moyuan Cao

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(21)

Published: Feb. 22, 2024

Abstract The manipulation of gas in multiphase interactions plays a crucial role various electrochemical processes. Inspired by nature, researchers have explored bioinspired strategies for regulating these interactions, leading to remarkable advancements design, mechanism, and applications. This paper provides comprehensive overview electrochemistry. It traces the evolution gas‐involving reactions, highlighting key milestones breakthroughs achieved thus far. then delves into design principles underlying mechanisms superaerophobic (super)aerophilic electrodes, as well asymmetric electrodes. Furthermore, applications hydrogen reaction (HER), carbon dioxide reduction (CO 2 RR), other reactions are summarized. promising prospects future directions advancing through also discussed.

Language: Английский

Citations

14
Fluid Unidirectional Transport Induced by Structure and Ambient Elements across Porous Materials: From Principles to Applications DOI

Kaisong Huang,

Yifan Si, Jinlian Hu

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(32)

Published: May 30, 2024

Spontaneous or nonspontaneous unidirectional fluid transport across multidimension can occur under specific structural designs and ambient elements for porous materials. While existing reviews have extensively summarized on surfaces, there is an absence of literature summarizing fluid's This review introduces wetting phenomena observed natural biological surfaces structures. Subsequently, it offers overview diverse principles potential applications in this field, emphasizing various physical chemical (surface energy, capillary size, topographic curvature) (underwater, oil, pressure, solar energy). Applications encompass moisture-wicking fabric, sensors, skincare, fog collection, oil-water separation, electrochemistry, liquid-based gating, evaporators. Additionally, significant formulas from studies are compelled to offer readers valuable references. Simultaneously, advantages challenges critically assessed these the perspectives presented.

Language: Английский

Citations

13
Harvesting energy from marine: Seawater electrolysis for hydrogen production DOI
Weibo Zhang,

Yicui Wei,

Jingde Li

et al.

Fuel, Journal Year: 2024, Volume and Issue: 377, P. 132782 - 132782

Published: Aug. 14, 2024

Language: Английский

Citations

10
Multiscale Anion-Hybrid in Atomic Ni Sites for High-Rate Water Electrolysis: Insights into the Charge Accumulation Mechanism DOI
Yan Li, Yanan Peng,

Wenda Dong

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(20), P. 14194 - 14202

Published: May 8, 2024

Single-atom catalysts, characterized by transition metal–(N/O)4 units on nanocarbon (M–(N/O)4–C), have emerged as efficient performers in water electrolysis. However, there are few guiding principles for accurately controlling the ligand fields of single atoms to further stimulate catalyst activities. Herein, using Ni–(N/O)4–C unit a model, we develop modification P anion outer shells modulate morphology ligand. The thus prepared possesses high activity and excellent long-term durability, surpassing commercial Pt/C, RuO2, currently reported single-atom catalysts. Notably, mechanistic studies demonstrated that pseudocapacitive feature multiscale anion-hybrid is considerable at accumulating enough positive charge [Q], contributing oxygen evolution reaction (OER) order (β) through rate formula. DFT calculations also indicate catalytic decided suitable barrier energy intermediates due accumulation. This work reveals origin multihybrid nanocarbon, providing clear experiential formula designing electronic configuration catalysts boost electrocatalytic performance.

Language: Английский

Citations

9
From Atomic-Level Synthesis to Device-Scale Reactors: A Multiscale Approach to Water Electrolysis DOI

Xiangbowen Du,

Menghui Qi, Yong Wang

et al.

Accounts of Chemical Research, Journal Year: 2024, Volume and Issue: 57(9), P. 1298 - 1309

Published: April 10, 2024

ConspectusThe development of an advanced energy conversion system for water electrolysis with high efficiency and durability is great significance a hydrogen-powered society. This progress relies on the fabrication electrocatalysts superior electrochemical performance. Despite decades advancements in exploring high-performance noble non-noble metal electrocatalysts, several challenges persist at both micro- macrolevels field electrolysis.At microlevel, which encompasses electrocatalyst synthesis characterization, design strategies have primarily focused interface chemical engineering. However, comprehensive understanding investigation engineering across various length scales, from micrometers to atomic are still lacking. deficiency hampers rational catalysts optimal Under harsh reaction conditions, such as bias potential highly acidic or alkaline media, surface catalyst materials susceptible undergoing "reconstruction", deviating what observed through

Language: Английский

Citations

8