Construction of Highly Active Metal‐Containing Nanoparticles and FeCo‐N<sub>4</sub> Composite Sites for the Acidic Oxygen Reduction Reaction

Yin, Shuhu; Yang, Jian; Han, Yu; Li, Gen; Wan, Liyang; Chen, You‐Hu; Chen, Chi; Qu, Xi‐Ming; Jiang, Yanxia; Sun, Shi‐Gang

doi:10.1002/anie.202010013

Cited by 179 publications

(81 citation statements)

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“…However, a heavy reliance on computational simulations can deviate from the actual structure of the atom in the experiment. Therefore, it is necessary to provide fundamental structural information by combining advanced characterization, including including in situ (or operational) spectroscopic studies with spatial resolution, to determine the global and local environments [100] Copyright 2020, John Wiley and Sons.…”

Section: Discussionmentioning

confidence: 99%

“…It is also noteworthy that the superpotential obtained for Ir-SAC is comparable to that of bulk Pt (111), further demonstrating the exceptional activity of Ir-SAC. [96,100] In most cases, the electronic structure of the catalyst surface is significantly altered by doping atoms, which significantly alters the catalytic properties. [97] SACs show excellent performance due to their unique electronic structures and maximal atom utilization.…”

Section: Wwwadvsustainsyscommentioning

confidence: 99%

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confidence: 99%

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Metal‐Organic‐Framework‐Based Single‐Atomic Catalysts for Energy Conversion and Storage: Principles, Advances, and Theoretical Understandings

Yang

Yan

Kong

et al. 2021

Advanced Sustainable Systems

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Metal NPs have promising applications in catalysis. Metal active sites are usually located in the crosssections, edges, and corners of crystals and, depending on their locations, the crystals exhibit different catalytic activities. [3] Achieving maximum metal utilization by reducing the size of metal NPs to the atomic level is an effective method of improving the catalytic activity of metal catalysts. It has been found that singleatom catalysts have greatly improved catalytic performance, activity, and selectivity, and that metal single-atom catalysts (SACs) have high electrocatalytic activity and stability and are an effective strategy for achieving cost-effective catalysts for fuel cell applications. [4] An SAC was first proposed by Zhang et al. in 2011 and is defined as a carrier consisting of only isolated single atomic active sites. [1b] In recent years, SACs have emerged as having great potential for development. Their maximum atomic utilization efficiency and excellent performance have provided excellent catalytic performance in a variety of important reactions. [5] In addition, SACs have great potential in identifying and modulating the structure of the active canter to improve catalytic performance. SACs can minimize the use of noble metals and are highly advantageous in achieving 100% atomic utilization efficiency. Due to the single-atom nature of their active sites, SACs provide enhanced catalytic activity and have attracted much research attention in recent years. To avoid the agglomeration of single atoms and to achieve the separation and isolation of individual atoms, many strategies have been reported for synthesizing single atoms, such as wet chemical methods, electrochemical deposition, chemical vapor deposition, and high-temperature pyrolysis. However, it is challenging to maintain a high loading while avoiding agglomeration of individual atoms during the synthesis process. If the metal loading is too high, the high surface energy of single atoms tends to cause agglomeration of atoms. Therefore, the homogeneous dispersion and atomic size of active sites have been the focus of scientific research for decades. In general, the most common approach to preparing single-atom catalysts is to find suitable carriers to anchor single-atom metal sites (SMSs), [6] e.g., as active complexes, cations, or metal atoms) on the surface of heterogeneous carriers such as metals, metal oxides, silica, or carbon materials. However, these anchor sites are limited and disordered, leadingIn recent years, the development of alternative energy-saving, efficient, and clean catalysts for various electrochemical reactions has attracted increasing research attention. Among the various types of catalysts, singleatom catalysts (SACs) have unique properties. However, individual atoms are prone to agglomeration due to their high surface energy, which poses a major challenge to the development of SACs. Metal-organic frameworks (MOFs) have the advantages of high porosity and specific surface area, and MOF materials can be ideal ca...

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Section: Discussionmentioning

confidence: 99%

Section: Wwwadvsustainsyscommentioning

confidence: 99%

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Metal‐Organic‐Framework‐Based Single‐Atomic Catalysts for Energy Conversion and Storage: Principles, Advances, and Theoretical Understandings

Yang

Yan

Kong

et al. 2021

Advanced Sustainable Systems

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“…[25] Here, we report that the combination of the chiral induced spin selectivity (CISS) effect and the photothermal effect enhances the anode current and inhibits the production of hydrogen peroxide. [26][27][28] Chiral molecules are adsorbed on the surface of two-dimensional layered titanium disulfide [23,29,30] and will induce an intermolecular chirality which causes the molecules to have the same spin direction as the electrons in the electrode. [31] It is difficult to synthesize hydrogen peroxide using hydroxyl radicals with the same spin direction.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Photocatalytic Hydrolysis Performance of Chiral Molecule Loaded Titanium Disulfide Nanosheets

Bai

Cao

et al. 2022

ChemPhysChem

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The photoelectrochemical (PEC) water decomposition is a promising method to produce hydrogen from water. To improve the water decomposition efficiency of the PEC process, it is necessary to inhibit the generation of H 2 O 2 byproducts and reduce the overpotential required by cheap catalysts and a high current density. Studies have shown that coating the electrode with chiral molecules or chiral films can increase the hydrogen production and reduce the generation of H 2 O 2 byproducts. This is interpreted as the result of a chiral induced spin selectivity (CISS) effect, which induces a spin correlation between the electrons that are transferred to the anode. Here, we report the adsorption of chiral molecules onto titanium disulfide nanosheets. Firstly, titanium disulfide nanosheets were synthesized via thermal injection and then dispersed through ultrasonic crushing. This strategy combines the CISS with the plasma effect caused by the narrow bandgap of two-dimensional sulfur compounds to promote the PEC water decomposition with a high current density.

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“…For the synthesis of ammonia, in addition to the commonly used Fe-based catalysts and Ru-based catalysts, Co-based catalysts are also used in the plasma synthesis of ammonia. , In this study, the size effect of Co NPs on the NTP ammonia synthesis and the role of Co SACs with different nitrogen coordination numbers were mainly discussed. Among the defect-containing catalysts, the metal-containing nitrogen-doped carbon catalyst derived from the pyrolysis of ZIFs is a common doping and SAC synthesis route. − In the ZIF series of derivative materials, Co 2+ and Zn 2+ exhibit the same sodalite coordination as 2-methylimidazole. The deliberate addition of Zn 2+ can replace a certain proportion of Co 2+ sites and act as a “fence” to further extend the adjacent distance of Co atoms .…”

Section: Introductionmentioning

confidence: 99%

Synergistic Catalysis of the Synthesis of Ammonia with Co-Based Catalysts and Plasma: From Nanoparticles to a Single Atom

Jiao

Cui

et al. 2021

ACS Appl. Mater. Interfaces

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In this study, a series of Co nanoparticles (NPs) with different sizes and Co single-atom catalysts (SACs) with different cobalt−nitrogen coordination numbers (Co−N 2 , Co−N 3 , and Co−N 4 ) were synthesized and applied to the synthesis of ammonia catalyzed by plasma at low temperatures and atmospheric pressures. Under the same reaction conditions, the yield of nitrogen obtained from the reduction to ammonia over a series of Co NP catalysts varies with the Co particle size. The smaller the size of the Co NPs, the greater the number of exposed active centers, and the catalytic activity is higher. Among the Co SACs, the best catalyst was Co−N 2 with two coordinated nitrogen atoms, and the ammonia yield was 181 mg. The experimental and theoretical calculations were consistent in that a low Co−N coordination number was beneficial to the adsorption and dissociation of N 2 , thereby enhancing the reduction activity of N 2 and promoting the increase of ammonia production.

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Construction of Highly Active Metal‐Containing Nanoparticles and FeCo‐N₄ Composite Sites for the Acidic Oxygen Reduction Reaction

Cited by 179 publications

References 44 publications

Metal‐Organic‐Framework‐Based Single‐Atomic Catalysts for Energy Conversion and Storage: Principles, Advances, and Theoretical Understandings

Metal‐Organic‐Framework‐Based Single‐Atomic Catalysts for Energy Conversion and Storage: Principles, Advances, and Theoretical Understandings

Enhanced Photocatalytic Hydrolysis Performance of Chiral Molecule Loaded Titanium Disulfide Nanosheets

Synergistic Catalysis of the Synthesis of Ammonia with Co-Based Catalysts and Plasma: From Nanoparticles to a Single Atom

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Construction of Highly Active Metal‐Containing Nanoparticles and FeCo‐N4 Composite Sites for the Acidic Oxygen Reduction Reaction

Cited by 179 publications

References 44 publications

Metal‐Organic‐Framework‐Based Single‐Atomic Catalysts for Energy Conversion and Storage: Principles, Advances, and Theoretical Understandings

Metal‐Organic‐Framework‐Based Single‐Atomic Catalysts for Energy Conversion and Storage: Principles, Advances, and Theoretical Understandings

Enhanced Photocatalytic Hydrolysis Performance of Chiral Molecule Loaded Titanium Disulfide Nanosheets

Synergistic Catalysis of the Synthesis of Ammonia with Co-Based Catalysts and Plasma: From Nanoparticles to a Single Atom

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Construction of Highly Active Metal‐Containing Nanoparticles and FeCo‐N₄ Composite Sites for the Acidic Oxygen Reduction Reaction