Enhanced Hydrogen Evolution Reaction in Alkaline Media via Ruthenium–Chromium Atomic Pairs Modified Ruthenium Nanoparticles DOI Creative Commons
Parisa Eskandari, Yingtang Zhou, Jodie A. Yuwono

et al.

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

Published: March 20, 2025

Abstract Precisely optimizing the electronic metal support interaction (EMSI) of electrocatalysts and tuning structures active sites are crucial for accelerating water adsorption dissociation kinetics in alkaline hydrogen evolution reaction (HER). Herein, an effective strategy is applied to modify structure Ru nanoparticles (Ru NPs ) by incorporating single atoms SAs Cr atomic pairs (RuCr APs onto a nitrogen‐doped carbon (N–C) through optimized EMSI. The resulting catalyst, ‐RuCr ‐N‐C, shows exceptional performance HER, achieving six times higher turnover frequency (TOF) 13.15 s⁻¹ at overpotential 100 mV, compared that commercial Pt/C (2.07 s⁻¹). Additionally, catalyst operates lower current density 10 mA·cm⁻ 2 (η = 31 mV), outperforming 34 mV). Experimental results confirm RuCr modified main facilitating rate‐determining steps dissociation. Moreover, Ru–Cr also plays vital role modulating desorption. This study presents synergistic approach rationally combining atoms, pairs, with EMSI effects advance development efficient HER.

Language: Английский

Microwave Synthesis of Pt Clusters on Black TiO2 with Abundant Oxygen Vacancies for Efficient Acidic Electrocatalytic Hydrogen Evolution DOI Creative Commons
Zexing Wu, Pengfei Yan, Qichang Li

et al.

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(14)

Published: Feb. 9, 2023

Oxygen vacancies-enriched black TiO2 is one promising support for enhancing hydrogen evolution reaction (HER). Herein, oxygen vacancies enriched supported sub-nanometer Pt clusters (Pt/TiO2 -OV ) with metal interactions designed through solvent-free microwave and following low-temperature electroless approach the first time. High-temperature strong reductants are not required then can avoid aggregation of decorated species. Experimental theoretical calculation verify that created exhibit synergistic effects optimizing kinetics. Based on it, Pt/TiO2 presents remarkable electrocatalytic performance 18 mV to achieve 10 mA cm-2 coupled small Tafel slope 12 dec-1 . This work provides quick synthetic strategy preparing titanium dioxide based nanomaterials.

Language: Английский

Citations

142
High-entropy alloy nanocrystal assembled by nanosheets with d–d electron interaction for hydrogen evolution reaction DOI
Min Wei, Yuyan Sun, Junyu Zhang

et al.

Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 16(9), P. 4009 - 4019

Published: Jan. 1, 2023

Unique PtMoPdRhNi high-entropy alloy nanocrystals (NCs) catalysts assembled by radial nanosheets with multiple active sites different local chemical environments and the interaction of d–d electron for superior HER performance.

Language: Английский

Citations

75
Structural engineering of atomic catalysts for electrocatalysis DOI Creative Commons

Tianmi Tang,

Xue Bai, Zhenlü Wang

et al.

Chemical Science, Journal Year: 2024, Volume and Issue: 15(14), P. 5082 - 5112

Published: Jan. 1, 2024

This review systematically introduces how to regulate the electronic structure and geometric configuration of atomic catalysts achieve high-efficiency electrocatalysis performances by analyzing detailed electrocatalytic applications mechanisms.

Language: Английский

Citations

66
Delaminated MBene sheets beyond usual 2D transition metal materials for securing Pt single atoms to boost hydrogen evolution DOI
Seok Ju Park, Thanh Hai Nguyen, Duy Thanh Tran

et al.

Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 16(9), P. 4093 - 4104

Published: Jan. 1, 2023

The use of a minimum amount active metal makes single-atom catalysts (SACs) an effective route to economically catalyze electrochemical reactions.

Language: Английский

Citations

62
State-of-the-art single-atom catalysts in electrocatalysis: From fundamentals to applications DOI
Muhammad Humayun, Muhammad Israr, Abbas Khan

et al.

Nano Energy, Journal Year: 2023, Volume and Issue: 113, P. 108570 - 108570

Published: May 29, 2023

Language: Английский

Citations

60
Ultrahigh Mass Activity Pt Entities Consisting of Pt Single atoms, Clusters, and Nanoparticles for Improved Hydrogen Evolution Reaction DOI Creative Commons
Zhiqiang Zeng, Sven Küspert, S. Esmael Balaghi

et al.

Small, Journal Year: 2023, Volume and Issue: 19(29)

Published: March 22, 2023

Abstract Platinum is one of the best‐performing catalysts for hydrogen evolution reaction (HER). However, high cost and scarcity severely hinder large‐scale application Pt electrocatalysts. Constructing highly dispersed ultrasmall entities thereby a very effective strategy to increase utilization mass activities, reduce costs. Herein, composed mixture single atoms, clusters, nanoparticles are synthesized on mesoporous N‐doped carbon nanospheres. The presence demonstrated by combining among others aberration‐corrected annular dark‐field scanning transmission electron microscopy, X‐ray absorption spectroscopy, electrochemical CO stripping. best catalyst exhibits excellent geometric HER activity, respectively ≈4 26 times higher than that commercial Pt/C reference supported nonporous nanofibers with similar loadings. Noteworthily, after optimization geometrical electrode loading, ultrahigh activities (56 ± 3 A mg −1 11.7 0.6 Cat at −50 mV vs. reversible electrode), which ≈1.5 58 highest single‐atom cluster‐based reported so far.

Language: Английский

Citations

50
Advanced noble-metal/transition-metal/metal-free electrocatalysts for hydrogen evolution reaction in water-electrolysis for hydrogen production DOI
Chunxia Wang,

Wenxuan Guo,

Tianle Chen

et al.

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 514, P. 215899 - 215899

Published: May 13, 2024

Language: Английский

Citations

40
Challenges and Opportunities for Single‐Atom Electrocatalysts: From Lab‐Scale Research to Potential Industry‐Level Applications DOI Creative Commons
Chen Jia, Qian Sun, Ruirui Liu

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: June 13, 2024

Single-atom electrocatalysts (SACs) are a class of promising materials for driving electrochemical energy conversion reactions due to their intrinsic advantages, including maximum metal utilization, well-defined active structures, and strong interface effects. However, SACs have not reached full commercialization broad industrial applications. This review summarizes recent research achievements in the design crucial electrocatalytic on sites, coordination, substrates, as well synthesis methods. The key challenges facing activity, selectivity, stability, scalability, highlighted. Furthermore, it is pointed out new strategies address these increasing activity enhancing utilization improving optimizing local environment, developing fabrication techniques, leveraging insights from theoretical studies, expanding potential Finally, views offered future direction single-atom electrocatalysis toward commercialization.

Language: Английский

Citations

30
General negative pressure annealing approach for creating ultra-high-loading single atom catalyst libraries DOI Creative Commons
Yi Wang,

Chongao Li,

Xiao Han

et al.

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

Published: July 6, 2024

Abstract Catalyst systems populated by high-density single atoms are crucial for improving catalytic activity and selectivity, which can potentially maximize the industrial prospects of heterogeneous single-atom catalysts (SACs). However, achieving high-loading SACs with metal contents above 10 wt% remains challenging. Here we describe a general negative pressure annealing strategy to fabricate ultrahigh-loading up 27.3–44.8 13 different metals on typical carbon nitride matrix. Furthermore, our approach enables synthesis high-entropy (HESACs) that exhibit coexistence multiple high contents. In-situ aberration-corrected HAADF-STEM (AC-STEM) combined ex-situ X-ray absorption fine structure (XAFS) demonstrate treatment accelerates removal anionic ligand in precursors boosts bonding species N defective sites, enabling formation dense N-coordinated sites. Increasing loading platinum (Pt) SAC 41.8 significantly enhances propane oxidation towards liquid products, including acetone, methanol, acetic acid et al. This work presents straightforward universal many low-cost efficient transformations.

Language: Английский

Citations

27
Graphene and MOF Assembly: Enhanced Fabrication and Functional Derivative via MOF Amorphization DOI Creative Commons
Zeheng Lin, Zhaojun Han, George E. P. O'Connell

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(19)

Published: Jan. 30, 2024

Abstract The integration of graphene and metal–organic frameworks (MOFs) has numerous implications across various domains, but fabricating such assemblies is often complicated time‐consuming. Herein, a one‐step preparation graphene‐MOF assembly presented by directly impregnating vertical (VG) arrays into the zeolitic imidazolate framework (ZIF) precursors under ambient conditions. This approach can effectively assemble multiple ZIFs, including ZIF‐7, ZIF‐8, ZIF‐67, resulting in their uniform dispersion on VG with adjustable sizes shapes. Hydrogen defects surface are critical inducing high‐efficiency ZIF assembly, acting as reactive sites to interact facilitate crystallisation. versatility VG‐ZIF‐67 further demonstrated exploring process MOF amorphization. Surprisingly, this leads an amorphous thin‐film coating formed (named VG‐IL‐amZIF‐67), which preserves short‐range molecular bonds crystalline ZIF‐67 while sacrificing long‐range order. Such unique film‐on‐graphene architecture maintains essential characteristics functionalities within disordered arrangement, making it well‐suited for electrocatalysis. In electrochemical oxygen reduction, VG‐IL‐amZIF‐67 exhibits exceptional activity, selectivity, stability produce H 2 O acid media.

Language: Английский

Citations

18