Potential‐Driven Dynamic Spring‐Effect of Pd─Cu Dual‐Atoms Empowered Stability and Activity for Electrocatalytic Reduction DOI Creative Commons

Pei‐Hua Li,

Yuan‐Fan Yang,

Zong‐Yin Song

и другие.

Advanced Science, Год журнала: 2025, Номер unknown

Опубликована: Апрель 26, 2025

Abstract Atomic‐level catalysts are extensively applied in heterogeneous catalysis fields. However, it is a general but ineluctable issue that active metal atoms may migrate, aggregate, deactivate, or leach during reaction processes, suppressing their catalytic performances. Designing superior intrinsic‐structural stability of atomic‐level with high activity and revealing dynamic structure evolution vital for wide applications complex reactions harsh conditions. Herein, high‐stable Pd─Cu dual‐atom PdN 3 ─CuN coordination engineered via strong chelation Cu 2+ ‐ions electron pairs from palladium‐source, achieving the highest turnover frequency under lowest overpotential Cr(VI) electrocatalytic reduction detection strong‐acid electrolytes. In situ X‐ray absorption fine spectra reveal “spring‐effect” Cu─Pd Cu─N bonds reversibly stretched potential changes can be recovered at 0.6 V regeneration. The modulated electron‐orbit coupling effect prevents Cu‐atoms aggregating as metallic nanoparticles. dual‐atoms interact two O H 2 CrO 4 , forming stable bridge configurations transferring electrons to promote Cr─O bond dissociation, which prominently decreases energy barriers. This work provides feasible route boost robustness single‐atoms easily affected by conditions sustainable applications.

Язык: Английский

Selective oxygen reduction reaction: mechanism understanding, catalyst design and practical application DOI Creative Commons
Shilong Li, Lei Shi, Yingjie Guo

и другие.

Chemical Science, Год журнала: 2024, Номер 15(29), С. 11188 - 11228

Опубликована: Янв. 1, 2024

The oxygen reduction reaction (ORR) is a key component for many clean energy technologies and other industrial processes. However, the low selectivity sluggish kinetics of ORR catalysts have hampered conversion efficiency real application these new mentioned before. Recently, tremendous efforts been made in mechanism understanding, electrocatalyst development system design. Here, comprehensive critical review provided to present recent advances field electrocatalytic ORR. two-electron four-electron transfer catalytic mechanisms evaluation parameters are discussed first. Then, up-to-date synthetic strategies

Язык: Английский

Процитировано

29
Spin effect in dual-atom catalysts for electrocatalysis DOI Creative Commons

Xiaoqin Xu,

Jingqi Guan

Chemical Science, Год журнала: 2024, Номер 15(36), С. 14585 - 14607

Опубликована: Янв. 1, 2024

The development of high-efficiency atomic-level catalysts for energy-conversion and -storage technologies is crucial to address energy shortages. spin states diatomic (DACs) are closely tied their catalytic activity. Adjusting the DACs' active centers can directly modify occupancy d-orbitals, thereby influencing bonding strength between metal sites intermediates as well transfer during electro reactions. Herein, we discuss various techniques characterizing atomic strategies modulating center states. Next, outline recent progress in study effects DACs oxygen reduction reaction (ORR), evolution (OER), hydrogen (HER), electrocatalytic nitrogen/nitrate (eNRR/NO

Язык: Английский

Процитировано

29
Metal-organic framework-derived diatomic catalysts for environmental remediation: Synthesis, applications and improvement strategies DOI
Tong Hu, Wenjun Zhou,

Wangwang Tang

и другие.

Coordination Chemistry Reviews, Год журнала: 2024, Номер 526, С. 216357 - 216357

Опубликована: Ноя. 29, 2024

Язык: Английский

Процитировано

21
Multi‐Enzyme Mimetic MoCu Dual‐Atom Nanozyme Triggering Oxidative Stress Cascade Amplification for High‐Efficiency Synergistic Cancer Therapy DOI Open Access

Ziyao Li,

Binbin Ding, Jing Li

и другие.

Angewandte Chemie International Edition, Год журнала: 2024, Номер 64(1)

Опубликована: Авг. 22, 2024

Single-atom nanozymes (SAzymes) with ultrahigh atom utilization efficiency have been extensively applied in reactive oxygen species (ROS)-mediated cancer therapy. However, the high energy barriers of reaction intermediates on single-atom sites and overexpressed antioxidants tumor microenvironment restrict amplification oxidative stress, resulting unsatisfactory therapeutic efficacy. Herein, we report a multi-enzyme mimetic MoCu dual-atom nanozyme (MoCu DAzyme) various catalytic active sites, which exhibits peroxidase, oxidase, glutathione (GSH) nicotinamide adenine dinucleotide phosphate (NADPH) oxidase mimicking activities. Compared Mo SAzyme, introduction Cu atoms, formation synergetic effects among enhance substrate adsorption reduce barrier, thereby endowing DAzyme stronger Benefiting from above enzyme-like activities, can not only generate multiple ROS, but also deplete GSH block its regeneration to trigger cascade stress. Additionally, strong optical absorption near-infrared II bio-window endows remarkable photothermal conversion performance. Consequently, achieves high-efficiency synergistic treatment incorporating collaborative therapy This work will advance applications DAzymes provide valuable insights for nanocatalytic

Язык: Английский

Процитировано

19
Advances in MXene-based single-atom catalysts for electrocatalytic applications DOI
Haitao Wang, Xiaocheng Li, Yaqi Deng

и другие.

Coordination Chemistry Reviews, Год журнала: 2025, Номер 529, С. 216462 - 216462

Опубликована: Янв. 21, 2025

Язык: Английский

Процитировано

10
Boosting Oxygen Reduction Reaction Performance of Fe Single‐Atom Catalysts Via Precise Control of the Coordination Environment DOI Open Access
Shiyu Zhang,

Buwei Sun,

Kang Liao

и другие.

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 3, 2025

Abstract Fe single‐atom on N‐doped carbon (FeN‐C) catalysts emerge as promising alternatives to commercial Pt/C for the oxygen reduction reaction. Heterogeneous atom doping is proposed be effective modulating catalyst performance. Despite this, relationship between fine coordination structure of doped atoms and catalytic activity central metal site remains poorly understood. Herein, with S in either first shell (FeSN–C) or second (FeN–SC) active are synthesized compare effects different structure. FeN–SC exhibits prominent performance a half‐wave potential 0.92 V rotating disk electrode peak power density 251 mW cm −2 zinc–air battery. Theoretical studies reveal that effectively modulates electronic charge transfer at center. Compared directly coordinated within shell, located more optimizing adsorption desorption energy barriers oxygen‐containing intermediates sites. This study provides new strategy adjust by engineering multilayer center catalyst.

Язык: Английский

Процитировано

3
Satellite-like shielding for dual single-atom catalysis, boosting ampere-level alkaline seawater splitting DOI
Hao Chen, Yanqin Wang, Rong Ding

и другие.

Matter, Год журнала: 2024, Номер 7(9), С. 3189 - 3204

Опубликована: Июнь 21, 2024

Язык: Английский

Процитировано

17
In situ/Operando Investigation for Heterogeneous Electro-Catalysts: From Model Catalysts to State-of-the-Art Catalysts DOI
Jingting Song, Zhengxin Qian,

Ji Yang

и другие.

ACS Energy Letters, Год журнала: 2024, Номер 9(9), С. 4414 - 4440

Опубликована: Авг. 17, 2024

Electrochemical reactions, including water splitting, oxygen reduction, hydrogen oxidation, carbon dioxide nitrogen oxide etc., are critical for sustainable energy conversion and storage. Achieving high efficiency in these reactions requires catalysts with superior activity, selectivity, stability, often realized through nanostructured metal catalysts. However, practical challenges such as low selectivity catalytic degradation persist. In situ operando characterization techniques offer real-time insights into catalyst behavior under reaction conditions, enabling a deeper understanding of structure–performance relationships and, therefore, guiding the design optimization electro-catalysts. This review discusses common situ/operando techniques, highlights their applications model catalysts, single-atom single-crystal further explores combinational analysis to study complex nanocatalysts. Finally, we provide suggestions perspectives on development advance field electrochemical catalysis.

Язык: Английский

Процитировано

15
Metal-organic-framework-derived dual-atom catalysts: from synthesis to electrocatalytic applications DOI
Xiaoqin Xu, Jingqi Guan

Materials Science and Engineering R Reports, Год журнала: 2024, Номер 162, С. 100886 - 100886

Опубликована: Ноя. 23, 2024

Язык: Английский

Процитировано

14
Diatomic Catalysts for Aqueous Zinc‐Iodine Batteries: Mechanistic Insights and Design Strategies DOI

Peng Hei,

Ya Sai,

Wenjie Li

и другие.

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(49)

Опубликована: Сен. 13, 2024

Abstract There has been a growing interest in developing catalysts to enable the reversible iodine conversion reaction for high‐performance aqueous zinc‐iodine batteries (AZIBs). While diatomic (DACs) have demonstrated superior performance various catalytic reactions due their ability facilitate synergistic charge interactions, application AZIBs remains unexplored. Herein, we present, first time, DAC comprising Mn−Zn dual atoms anchored on nitrogen‐doped carbon matrix (MnZn−NC) loading, resulting AZIB with capacity of 224 mAh g −1 at 1 A and remarkable cycling stability over 320,000 cycles. The electron hopping along Mn−N−Zn bridge is stimulated via spin exchange mechanism. This process broadens Mn 3d xy band width enhances metallic character catalyst, thus facilitating transfer between intermediates. Additionally, increased occupancy within d‐orbital Zn elevates Zn's d‐band center, thereby enhancing chemical interactions MnZn−NC I‐based species. Furthermore, our mechanism demonstrates potential applicability other Metal‐Zn−NC DACs spin‐polarized atoms. Our work elucidates clear mechanistic understanding provides new insights into catalyst design AZIBs.

Язык: Английский

Процитировано

13