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Luo L, Ju J, Xi M, Wu Y, Mao N, Yan S, Wei Z, Jiang H, Li Y, Hu Y, Li C. The Micron-Droplet-Confined Continuous-Flow Synthesis of Freestanding High-Entropy-Alloy Nanoparticles by Flame Spray Pyrolysis. Small 2024:e2401360. [PMID: 38708800 DOI: 10.1002/smll.202401360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 04/25/2024] [Indexed: 05/07/2024]
Abstract
Alloying multiple immiscible elements into a nanoparticle with single-phase solid solution structure (high-entropy-alloy nanoparticles, HEA-NPs) merits great potential. To date, various kinds of synthesis techniques of HEA-NPs are developed; however, a continuous-flow synthesis of freestanding HEA-NPs remains a challenge. Here a micron-droplet-confined strategy by flame spray pyrolysis (FSP) to achieve the continuous-flow synthesis of freestanding HEA-NPs, is proposed. The continuous precursor solution undergoes gas shearing and micro-explosion to form nano droplets which act as the micron-droplet-confined reactors. The ultrafast evolution (<5 ms) from droplets to <10 nm nanoparticles of binary to septenary alloys is achieved through thermodynamic and kinetic control (high temperature and ultrafast colling). Among them, the AuPtPdRuIr HEA-NPs exhibit excellent electrocatalytic performance for alkaline hydrogen evolution reaction with 23 mV overpotential to achieve 10 mA cm-2, which is twofold better than that of the commercial Pt/C. It is anticipated that the continuous-flow synthesis by FSP can introduce a new way for the continuous synthesis of freestanding HEA-NP with a high productivity rate.
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Affiliation(s)
- Lingli Luo
- Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Environmental Friendly Materials Technical Service Platform, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Jie Ju
- Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Environmental Friendly Materials Technical Service Platform, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Menghua Xi
- Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Environmental Friendly Materials Technical Service Platform, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Yingjie Wu
- Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Environmental Friendly Materials Technical Service Platform, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Ningxuan Mao
- Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Environmental Friendly Materials Technical Service Platform, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Shaojiu Yan
- Beijing Institute of Aeronautical Materials No.8, Hangcai Avenue, Beijing, 100095, China
| | - Zhong Wei
- Beijing Institute of Aeronautical Materials No.8, Hangcai Avenue, Beijing, 100095, China
- School of Chemistry and Chemical Engineering Shihezi University, Shihezi, 832003, China
| | - Hao Jiang
- Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Environmental Friendly Materials Technical Service Platform, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Yuhang Li
- Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Environmental Friendly Materials Technical Service Platform, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Yanjie Hu
- Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Environmental Friendly Materials Technical Service Platform, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Chunzhong Li
- Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Environmental Friendly Materials Technical Service Platform, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
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Liang S, Dong C, Zhou C, Wang R, Huang F. Ion-Sieve- Confined Synthesis of Size-Tunable Ru for Electrochemical Hydrogen Evolution. Nano Lett 2024; 24:757-763. [PMID: 38166149 DOI: 10.1021/acs.nanolett.3c04419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2024]
Abstract
The controllable and low-cost synthesis of nanometal particles is highly desired in scientific and industrial research. Herein, size-tunable Ru nanoparticles were synthesized by using a novel ion-sieve-confined reduction method. The H2TiO3 ion-sieve was used to adsorb Ru3+ into the hydroxyl-enriched porous [TiO3]2- layers. The confined environment of the interlayer space facilitates Ru-Ru collision and bonding during annealing, achieving a precise reduction from Ru3+ to Ru0 without additional reductants. Owing to the confinement effect, Ru0 nanoparticles are uniformly embedded in the pores on the surface of the postannealed TiO2 matrix (Ru@TiO2). Ru@TiO2 exhibited a lower overpotential than Pt/C (57 vs 87 mV at 10 mA cm-2) for the HER in 0.1 M KOH solution. The confinement-induced reduction of metal ions was also preliminarily proved in ion-exchanged zeolites, which provides facile and abundant approaches for the size-controllable synthesis of nanometal catalysts with high catalytic activity.
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Affiliation(s)
- Song Liang
- Beijing National Laboratory for Molecular Sciences and State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
- State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Chenlong Dong
- Tianjin Key Laboratory for Photoelectric Materials and Devices, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China
| | - Ce Zhou
- Beijing National Laboratory for Molecular Sciences and State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
| | - Ruiqi Wang
- School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 101408, P. R. China
| | - Fuqiang Huang
- Beijing National Laboratory for Molecular Sciences and State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
- State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
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Geng P, Lin Y, Du M, Wu C, Luo T, Peng Y, Wang L, Jiang X, Wang S, Zhang X, Ni L, Chen S, Shakouri M, Pang H. Confined Synthesis of Amorphous Al 2 O 3 Framework Nanocomposites Based on the Oxygen-Potential Diagram as Sulfur Hosts for Catalytic Conversion. Adv Sci (Weinh) 2023; 10:e2302215. [PMID: 37337394 PMCID: PMC10460837 DOI: 10.1002/advs.202302215] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 05/25/2023] [Indexed: 06/21/2023]
Abstract
Sulfur cathodes in Li-S batteries suffer significant volumetric expansion and lack of catalytic activity for polysulfide conversion. In this study, a confined self-reduction synthetic route is developed for preparing nanocomposites using diverse metal ions (Mn2+ , Co2+ , Ni2+ , and Zn2+ )-introduced Al-MIL-96 as precursors. The Ni2+ -introduced Al-MIL-96-derived nanocomposite contains a "hardness unit", amorphous aluminum oxide framework, to restrain the volumetric expansion, and a "softness unit", Ni nanocrystals, to improve the catalytic activity. The oxygen-potential diagram theoretically explains why Ni2+ is preferentially reduced. Postmortem microstructure characterization confirms the suppressive volume expansion. The in situ ultraviolet-visible measurements are performed to probe the catalytic activity of polysulfide conversion. This study provides a new perspective for designing nanocomposites with "hardness units" and "softness units" as sulfur or other catalyst hosts.
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Affiliation(s)
- Pengbiao Geng
- School of Chemistry and Chemical EngineeringYangzhou UniversityYangzhouJiangsu225009P. R. China
| | - Yuxing Lin
- College of Physics Science and TechnologyYangzhou UniversityYangzhouJiangsu225009P. R. China
| | - Meng Du
- School of Chemistry and Chemical EngineeringYangzhou UniversityYangzhouJiangsu225009P. R. China
| | - Chunsheng Wu
- School of Chemistry and Chemical EngineeringYangzhou UniversityYangzhouJiangsu225009P. R. China
| | - Tianxing Luo
- School of Chemistry and Chemical EngineeringYangzhou UniversityYangzhouJiangsu225009P. R. China
| | - Yi Peng
- School of Chemistry and Chemical EngineeringYangzhou UniversityYangzhouJiangsu225009P. R. China
| | - Lei Wang
- Department of Chemical EngineeringSchool of Environmental and Chemical EngineeringShanghai UniversityShanghai200444P. R. China
| | - Xinyuan Jiang
- School of Chemistry and Chemical EngineeringYangzhou UniversityYangzhouJiangsu225009P. R. China
| | - Shuli Wang
- School of Chemistry and Chemical EngineeringYangzhou UniversityYangzhouJiangsu225009P. R. China
| | - Xiuyun Zhang
- College of Physics Science and TechnologyYangzhou UniversityYangzhouJiangsu225009P. R. China
| | - Lubin Ni
- School of Chemistry and Chemical EngineeringYangzhou UniversityYangzhouJiangsu225009P. R. China
| | - Shuangqiang Chen
- Department of Chemical EngineeringSchool of Environmental and Chemical EngineeringShanghai UniversityShanghai200444P. R. China
| | - Mohsen Shakouri
- Canadian Light Source Inc.University of SaskatchewanSaskatoonS7N 2V3Canada
| | - Huan Pang
- School of Chemistry and Chemical EngineeringYangzhou UniversityYangzhouJiangsu225009P. R. China
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Jiang H, Zhang H, Chen L, Hu Y, Li C. Nanospace-Confinement Synthesis: Designing High-Energy Anode Materials toward Ultrastable Lithium-Ion Batteries. Small 2020; 16:e2002351. [PMID: 32608196 DOI: 10.1002/smll.202002351] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2020] [Revised: 05/21/2020] [Indexed: 06/11/2023]
Abstract
Exploiting high-capacity and durable electrode materials is pivotal to developing lithium-ion batteries (LIBs) and their applications. Multiscaled nanomaterials have been demonstrated to efficiently couple the advantages of each component on different scales in energy storage fields. However, the precise control of the microstructure remains a great challenge for maximizing their contributions. Nanospace-confined synthesis provides a proactive strategy to build novel multiscaled nanomaterials with controllable internal void space for circumventing the intrinsic volume effects in the charge/discharge process. Herein, the rational design and synthesis of multiscaled high-capacity anode materials are mainly summarized according to their electrochemical mechanisms by choosing 1D channel, 2D interlayer, and 3D space as representative confinement reaction environments. The structure-performance relationships are clarified with the assistance of quantitative calculations, molecular simulations, and so forth. Finally, future potentials and challenges of such a synthesis tactic in designing high-performance electrode materials for next-generation secondary batteries are outlooked.
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Affiliation(s)
- Hao Jiang
- Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Engineering Research Center of Multiscale Nanomaterials, School of Materials Science and Engineering, East China University of Science & Technology, Shanghai, 200237, China
| | - Haoxuan Zhang
- Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Engineering Research Center of Multiscale Nanomaterials, School of Materials Science and Engineering, East China University of Science & Technology, Shanghai, 200237, China
| | - Ling Chen
- Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Engineering Research Center of Multiscale Nanomaterials, School of Materials Science and Engineering, East China University of Science & Technology, Shanghai, 200237, China
| | - Yanjie Hu
- Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Engineering Research Center of Multiscale Nanomaterials, School of Materials Science and Engineering, East China University of Science & Technology, Shanghai, 200237, China
| | - Chunzhong Li
- Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Engineering Research Center of Multiscale Nanomaterials, School of Materials Science and Engineering, East China University of Science & Technology, Shanghai, 200237, China
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