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Article
Chemistry, Multidisciplinary
Wei Peng et al.
Summary: A general synthetic strategy was reported for engineering single-metal sites on 3D porous N, P codoped Ti3C2Tx nanosheets, resulting in highly active and stable electrocatalysts for the hydrogen evolution reaction (HER).
Article
Chemistry, Multidisciplinary
Qin Yang et al.
Summary: In this study, single vacancies in a carbon matrix were purposely synthesized to trap atomic platinum and form the Pt-C-3 configuration, which exhibited exceptionally high reactivity for the hydrogen evolution reaction in both acidic and alkaline solutions.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Review
Chemistry, Multidisciplinary
Gracita M. Tomboc et al.
Summary: Single-atom catalysts (SACs) have great potential in applications such as water electrolyzers and fuel cells, but their practical use is hindered by complications like atom agglomeration and relocation. This review focuses on the recent progress in SACs development and emphasizes the association between coordination environments and electrocatalytic performance.
Review
Chemistry, Multidisciplinary
Chen Gao et al.
Summary: This review highlights the significance of exploring highly active and stable electrocatalysts with earth-abundant metal centers for the oxygen reduction reaction (ORR). The focus is on the synthetic strategies and design principles of metal-N-C (M-N-C) electrocatalysts derived from zeolite imidazolate framework (ZIF) for efficient ORR catalysis. The review discusses methods to improve intrinsic ORR activity, such as coordination structures, doping metal-free heteroatoms, and edge-hosted structures, as well as strategies to increase active site density, including formation of M-N complexes and porous structure design.
Review
Chemistry, Physical
Peng Zhu et al.
Summary: Hydrogen production from water splitting using renewable electric energy is a key topic for achieving a carbon neutral future. Single atom catalysts (SACs) have emerged as a new frontier in catalysis, particularly in the hydrogen evolution reaction (HER), due to their high activity and excellent chemical selectivity. However, the influence of the neighboring coordinated atoms from the supports is often neglected in the classification of SACs. This review proposes a new classification method based on the type of supports and highlights the importance of the metal-support interaction and coordination environment. Structural designing strategies are also proposed to address the current challenges in SACs for HER.
Article
Multidisciplinary Sciences
Yufei Zhao et al.
Summary: This study presents the design of Pt atomic clusters supported on Co single atoms and N co-doped carbon to enhance hydrogen evolution catalysis. The catalyst exhibits a low overpotential and high activity compared to commercial Pt/C catalysts. The enhanced activity is attributed to the charge redistribution between Pt and O atoms, optimizing proton adsorption and hydrogen desorption.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Wenhao Yu et al.
Summary: This study successfully develops Pt/X-NCNT (X = 4, 8, 12, 16) catalysts with strong metal-support interaction (SMSI), which shows significant potential for hydrogen production by water electrolysis at high current density conditions. In-situ and ex-situ experiments and density functional theory simulations reveal the synergistic effect of various nitrogen functional groups and Pt under SMSI, optimizing the Gibbs free energies of reaction intermediates.
ADVANCED ENERGY MATERIALS
(2022)
Review
Chemistry, Physical
Fang Sun et al.
Summary: In this Review, the authors summarize the fundamentals and recent developments of theoretical insights into the electrocatalytic hydrogen evolution reaction (HER), including mechanistic aspects, key activity descriptors, local environment considerations, and advances beyond the computational hydrogen electrode. Computational and theoretical advances show great potential in identifying active sites and reaction mechanisms for HER. Major challenges ahead will also be discussed.
Article
Chemistry, Physical
Hanxu Yao et al.
Summary: Ru single atoms coupled with nanoclusters on hierarchical porous N-doped carbon exhibit high efficiency for hydrogen evolution reaction, with superior performance in alkaline and acidic conditions. These catalysts offer higher mass activity and lower cost for hydrogen production compared to commercial Pt/C, proving their industrial advantages.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Multidisciplinary
Yuying Jiao et al.
Summary: In this work, Fe-N-C single-atom catalysts (SACs) anchored on three-dimensional open-pore carbon networks (3D SAFe) were fabricated using a NaCl template-assisted in situ pyrolysis technique. The 3D SAFe catalyst exhibited ultrahigh activity and durability, resulting in ZABs with excellent performance.
Review
Chemistry, Physical
Ligang Wang et al.
Summary: Currently, global energy consumption heavily relies on traditional fossil fuels, leading to resource scarcity and significant carbon dioxide emissions. The concept of carbon neutrality has been proposed by many countries to address this issue. Two main strategies, reducing CO2 emissions and developing sustainable clean energy, are crucial in achieving carbon neutrality. This review highlights the importance of advanced single-atom catalysts (SACs) in converting CO2 into efficient carbon energy and introduces energy conversion technologies and devices that can replace polluting fossil fuels, such as photocatalytic and electrocatalytic water splitting. The review concludes with an overview of the challenges and future applications of SACs in contributing to carbon neutrality.
Review
Chemistry, Multidisciplinary
Chang-Xin Zhao et al.
Summary: This Review summarizes the regulation strategies for promoting the intrinsic electrocatalytic ORR activity of M-N-C SACs by modulation of the center metal atoms, the coordinated atoms, the environmental atoms, and the guest groups. The study includes both theoretical calculations and experimental investigations to provide a comprehensive understanding of the structure-performance relationship. Proposed future directions involve developing advanced M-N-C SACs for electrocatalytic ORR and other analogous reactions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Review
Chemistry, Multidisciplinary
Ming-Xi Chen et al.
Summary: Research has shown that M-N-C catalysts for PEMFCs are the most promising candidates to replace Pt-based catalysts, but the high-temperature pyrolysis process often leads to high structural heterogeneity, which hinders the identification of the catalytic active structure and further impacts the catalyst performance.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Jianbin Liu et al.
Summary: Iodine doping effectively modulates the electronic structure of single-atom catalysts, improving the catalytic activity of cobalt-nitrogen-carbon catalyst towards the hydrogen evolution reaction. The introduction of iodine dopants optimizes hydrogen adsorption and facilitates HER kinetics, providing an alternative strategy for enhancing SAC performance.
Review
Chemistry, Multidisciplinary
Lianli Zou et al.
Summary: This review summarizes the progress in the synthesis of MOF-derived SACs and their electrochemical applications. The synthetic approaches based on MOFs, characterization techniques for SACs, and their electrochemical applications including ORR, OER, HER, CO2RR, NRR, and other energy-related reactions are discussed. Insights into the current challenges and future prospects of this field are also briefly presented.
Article
Chemistry, Multidisciplinary
Jiali Wang et al.
Summary: Single-atom catalysts with maximum atom utilization and breakthrough activities towards hydrogen evolution reaction have attracted significant research interests. The study investigates the dynamic structure of Pt single-atom centers during the HER process. Experimental evidence is offered to correlate the observed Tafel slope with the dynamic structure of Pt catalysts.
Article
Chemistry, Multidisciplinary
Junjie Li et al.
Summary: This study achieves high loading of Pt single atoms on carbon nanosheets through atomic layer deposition and investigates the activity of Pt single atoms and nanoparticles using operando X-ray absorption spectroscopy in the hydrogen evolution reaction and oxygen reduction reaction. The results reveal differences in the unoccupied density of states of Pt 5d orbitals between Pt single atoms and nanoparticles, as well as the formation of a stable Pt oxide during ORR on the Pt-1/NCNS catalyst.
Article
Chemistry, Multidisciplinary
Panyong Kuang et al.
Summary: This study demonstrates the tailoring of the electronic structure of Pt single atoms supported on N-doped mesoporous hollow carbon spheres through strong EMSI engineering, leading to the Pt-1/NMHCS composite exhibiting higher activity and stability in catalyzing the electrocatalytic hydrogen evolution reaction compared to Pt-NP and commercial Pt/C. The strong EMSI effect in a unique N-1-Pt-1-C-2 coordination structure significantly modifies the electronic structure of Pt 5d states, enhancing the reduction of adsorbed proton and facilitating H-H coupling for Pt-like HER activity.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Physical
Lvhan Liang et al.
Summary: By utilizing the isolating effect of cobalt single atoms on platinum, strong interaction between cobalt single atoms and platinum, and the confinement of the metal organic framework-derived porous carbon matrix, platinum nanoparticles were successfully evenly immobilized on a nitrogen-doped carbon matrix with rich cobalt single atoms as multiple active sites. This not only increased the active centers, but also promoted catalysis kinetics, significantly improving catalytic activity for oxygen reduction and hydrogen evolution reactions.
Article
Energy & Fuels
Boanerges Elias Bamaca Saquic et al.
Summary: The study evaluated different platinum precursors for developing graphene-supported catalysts for hydrothermal gasification of biomass compounds, finding that ultrasound-assisted preparation method achieved targeted metal loading and better dispersion. PtCl2 precursor was identified as the best for depositing platinum particles on graphene with small, uniform size and narrow dispersion, resulting in similar hydrogen production among different precursors using the ultrasound-assisted method.
Article
Chemistry, Physical
Sengeni Anantharaj et al.
ACS ENERGY LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Zhe Wang et al.
Summary: A highly efficient and durable oxygen reduction reaction (ORR) catalyst consisting of atomically dispersed Co single atoms and small Co nanoparticles co-anchored on nitrogen-doped porous carbon nanocage was reported. The catalyst exhibited outstanding ORR activity and remarkable stability in alkaline media, outperforming Pt/C catalyst. Practical zinc-air battery assembled with this catalyst showed high power density, specific capacity, and cycling stability.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Yihui Zhu et al.
Summary: By computational studies, atomic step-rich Pt clusters and defective graphene (DG)-loaded Pt SAs are found to be beneficial for water dissociation and hydrogen coupling, respectively. The structure that integrates both Pt SAs and nanoclusters onto the DG matrix (PtSA/NC-DG) is predicted to exhibit decent activity and high atomic utilization for alkaline HER electrocatalysis.
Article
Multidisciplinary Sciences
Yi Shi et al.
Summary: Tuning the oxidation states of single-atom Pt catalysts through electronic metal-support interaction significantly modulates catalytic activities in either acidic or alkaline environments, establishing the structure-activity relationship and providing guidelines for the rational design of high-performance single-atom catalysts. Insights into the atomic-level mechanistic understanding of acidic and alkaline hydrogen evolution reactions have been obtained through this study.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Jingjing Liu et al.
Summary: The designed Fe-N/C catalyst demonstrates high intrinsic activity with edge effects and enriched nanopores for improved mass transport efficiency and atom utilization. This study opens up new opportunities for designing high-performance ORR electrocatalysts for diverse energy conversion and storage technologies.
Article
Chemistry, Multidisciplinary
Florian D. Speck et al.
Summary: Single-atom catalysts show promise for applications in renewable energy conversion, but face challenges in scaling up synthesis, performance evaluation in real devices like fuel cells, and degradation control.
Article
Chemistry, Multidisciplinary
Ziliang Chen et al.
Summary: An interfacial engineered VN/Co-NC electrocatalyst with exceptional catalytic performance has been reported, outperforming Pt in acidic, alkaline, and neutral media. The catalytic activity is mainly attributed to the synergy effect of the well-defined VN/Co heterointerfaces.
ENERGY & ENVIRONMENTAL SCIENCE
(2021)
Review
Chemistry, Physical
Jiarui Yang et al.
Summary: Single-atom materials (SAMs) have been widely studied in various fields, and their high performance is largely attributed to the microstructure inside the SAM. Achieving the goal of regulating structures and understanding the relationship between macroproperties and small structures are essential but require further efforts in this field. This review comprehensively summarizes and discusses the regulation on microstructures, the characterization of microstructures, and the relationship between macroproperties and small structures, mainly focusing on the application of SAM in catalysts. Proposed challenges and future developments aim to provide an overall view and guidance for future research in this area.
Article
Chemistry, Multidisciplinary
Ming-Xi Chen et al.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2020)
Article
Chemistry, Multidisciplinary
Qingqing Cheng et al.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2020)
Article
Multidisciplinary Sciences
Shi Fang et al.
NATURE COMMUNICATIONS
(2020)
Article
Multidisciplinary Sciences
Yazhou Zhou et al.
NATURE COMMUNICATIONS
(2020)
Article
Chemistry, Multidisciplinary
Yunxiang Li et al.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2020)
Review
Chemistry, Multidisciplinary
Yanghua He et al.
CHEMICAL SOCIETY REVIEWS
(2020)
Editorial Material
Chemistry, Physical
Simon T. Thompson et al.
Review
Chemistry, Multidisciplinary
Lijun Yang et al.
ADVANCED MATERIALS
(2019)
Article
Chemistry, Physical
Kai Chi et al.
JOURNAL OF MATERIALS CHEMISTRY A
(2019)
Review
Chemistry, Multidisciplinary
Huilong Fei et al.
CHEMICAL SOCIETY REVIEWS
(2019)
Article
Chemistry, Multidisciplinary
Ting He et al.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2018)
Article
Chemistry, Physical
Jason A. Varnell et al.
ACS ENERGY LETTERS
(2018)
Article
Chemistry, Physical
Huilong Fei et al.
Review
Multidisciplinary Sciences
Zhi Wei Seh et al.
Article
Multidisciplinary Sciences
Jason A. Varnell et al.
NATURE COMMUNICATIONS
(2016)
Article
Chemistry, Physical
Andrea Zitolo et al.
Article
Multidisciplinary Sciences
Hai-Wei Liang et al.
NATURE COMMUNICATIONS
(2015)
Article
Chemistry, Multidisciplinary
Jiao Deng et al.
ENERGY & ENVIRONMENTAL SCIENCE
(2014)
Review
Multidisciplinary Sciences
Steven Chu et al.
Review
Multidisciplinary Sciences
Mark K. Debe