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Ding Z, Li P, Qin Z, Huang W, Zhao P, Zhou D, Meng X, Sato YS, Dong H. Strain-Mediated Defect Engineering toward Rapid Atomic Migration in Fe-Al Diffusion Couples. NANO LETTERS 2024; 24:12171-12178. [PMID: 39240689 DOI: 10.1021/acs.nanolett.4c03115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/08/2024]
Abstract
In the pursuit of rapid atomic migration in lightweight Fe-Al diffusion couples, rationally designing short-circuit diffusion paths has become paramount. Herein, a strain-mediated defect engineering strategy was proposed for reducing the vacancy activation energy and enhancing diffusion behaviors along dislocations (DLs) and grain boundaries (GBs). Combining the modified Arrhenius-type relationship, an interfacial apparent activation energy of 139 kJ mol-1 was acquired utilizing defect engineering, which was decreased by about 49%. This was closely related to high-density vacancies, DLs, and GBs formed in strained Fe and Al materials, which provided more low activation energy paths for atomic migration. First-principles calculations indicated that the lattice diffusion barrier mediated by monovacancy was reduced with strain incorporation, attributed to the weakened atom-vacancy bond as a consequence of less electron transport. The synergistic effect of abnormal electron-charge distribution in the bulk and strong attraction force at the Al/Fe interface radically resulted in rapid atomic migration, collectively regulating the "breaking-forming bond" process.
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Affiliation(s)
- Zhijie Ding
- School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China
| | - Peng Li
- School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China
| | - Zhiwei Qin
- School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China
| | - Weiben Huang
- School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China
| | - Peng Zhao
- School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China
| | - Dianwu Zhou
- State Key Laboratory of Advanced Design and Manufacturing Technology for Vehicle, Hunan University, Changsha 410082, China
| | - Xiangchen Meng
- State Key Laboratory of Precision Welding & Joining of Materials and Structures, Harbin Institute of Technology, Harbin 150001, China
| | - Yutaka S Sato
- Department of Materials Processing, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan
| | - Honggang Dong
- School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China
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Cai W, Cao X, Wang Y, Chen S, Ma J, Zhang J. Spatial Structure of Electron Interactions in High-entropy Oxide Nanoparticles for Active Electrocatalysis of Carbon Dioxide Reduction. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2409949. [PMID: 39223931 DOI: 10.1002/adma.202409949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2024] [Revised: 08/23/2024] [Indexed: 09/04/2024]
Abstract
High-entropy oxides (HEOs) exhibit distinctive catalytic properties owing to their diverse elemental compositions, garnering considerable attention across various applications. However, the preparation of HEO nanoparticles with different spatial structures remains challenging due to their inherent structural instability. Herein, ultrasmall high-entropy oxide nanoparticles (less than 5 nm) with different spatial structures are synthesized on carbon supports via the rapid thermal shock treatment. The low-symmetry HEO, BiSbInCdSn-O4, demonstrates exceptional performance for electrocatalytic carbon dioxide reaction (eCO2RR), including a lower overpotential, high Faraday efficiency across a wide electrochemical range (-0.3 to -1.6 V), and sustained stability for over100 h. In the membrane electrode assembly electrolyzer, BiSbInCdSn-O4 achieves a current density of 350 mA cm-2 while maintaining good stability for 24 h. Both experimental observations and theoretical calculations reveal that the electron donor-acceptor interactions between bismuth and indium sites in BiSbInCdSn-O4 enable the electron delocalization to facilitate the efficient adsorption of CO2 and hydrogenation reactions. Thus, the energy barrier of the rate-determining step is reduced to enhance the electrocatalytic activity and stability. This study elucidates that the spatial structure of metal sites in HEOs is able to regulate CO2 adsorption status for eCO2RR, paving the way for the rational design of efficient HEO catalysts.
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Affiliation(s)
- Wenwen Cai
- Key Laboratory for Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China
| | - Xueying Cao
- Key Laboratory for Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China
| | - Yueqing Wang
- Key Laboratory for Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China
| | - Song Chen
- Key Laboratory for Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China
| | - Jizhen Ma
- Key Laboratory for Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China
| | - Jintao Zhang
- Key Laboratory for Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China
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Zhang R, Zhang Y, Xiao B, Zhang S, Wang Y, Cui H, Li C, Hou Y, Guo Y, Yang T, Fan J, Zhi C. Phase Engineering of High-Entropy Alloy for Enhanced Electrocatalytic Nitrate Reduction to Ammonia. Angew Chem Int Ed Engl 2024; 63:e202407589. [PMID: 38703065 DOI: 10.1002/anie.202407589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2024] [Accepted: 05/03/2024] [Indexed: 05/06/2024]
Abstract
Directly electrochemical conversion of nitrate (NO3 -) is an efficient and environmentally friendly technology for ammonia (NH3) production but is challenged by highly selective electrocatalysts. High-entropy alloys (HEAs) with unique properties are attractive materials in catalysis, particularly for multi-step reactions. Herein, we first reported the application of HEA (FeCoNiAlTi) for electrocatalytic NO3 - reduction to NH3 (NRA). The bulk HEA is active for NRA but limited by the unsatisfied NH3 yield of 0.36 mg h-1 cm-2 and Faradaic efficiency (FE) of 82.66 %. Through an effective phase engineering strategy, uniform intermetallic nanoparticles are introduced on the bulk HEA to increase electrochemical active surface area and charge transfer efficiency. The resulting nanostructured HEA (n-HEA) delivers enhanced electrochemical NRA performance in terms of NH3 yield (0.52 mg h-1 cm-2) and FE (95.23 %). Further experimental and theoretical investigations reveal that the multi-active sites (Fe, Co, and Ni) dominated electrocatalysis for NRA over the n-HEA. Notably, the typical Co sites exhibit the lowest energy barrier for NRA with *NH2 to *NH3as the rate-determining step.
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Affiliation(s)
- Rong Zhang
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
| | - Yaqin Zhang
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
| | - Bo Xiao
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
| | - Shaoce Zhang
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
| | - Yanbo Wang
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
| | - Huilin Cui
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
| | - Chuan Li
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
| | - Yue Hou
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
| | - Ying Guo
- College of Materials Science and Engineering, Shenzhen University, Shenzhen, Guangdong, 518055, China
| | - Tao Yang
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
| | - Jun Fan
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
| | - Chunyi Zhi
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
- Centre for Functional Photonics, City University of Hong Kong, Kowloon, Hong Kong, 999077, China
- Hong Kong Institute for Advanced Study, City University of Hong Kong, Kowloon, Hong Kong, 999077, China
- Hong Kong Center for Cerebro-Cardiovascular Health Engineering (COCHE), Shatin, NT, HKSAR, 999077, China
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Yu X, Ding X, Yao Y, Gao W, Wang C, Wu C, Wu C, Wang B, Wang L, Zou Z. Layered High-Entropy Metallic Glasses for Photothermal CO 2 Methanation. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2312942. [PMID: 38354694 DOI: 10.1002/adma.202312942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 02/07/2024] [Indexed: 02/16/2024]
Abstract
High entropy alloys and metallic glasses, as two typical metastable nanomaterials, have attracted tremendous interest in energy conversion catalysis due to their high reactivity in nonequilibrium states. Herein, a novel nanomaterial, layered high entropy metallic glass (HEMG), in a higher energy state than low-entropy alloys and its crystalline counterpart due to both the disordered elemental and structural arrangements, is synthesized. Specifically, the MnNiZrRuCe HEMG exhibits highly enhanced photothermal catalytic activity and long-term stability. An unprecedented CO2 methanation rate of 489 mmol g-1 h-1 at 330 °C is achieved, which is, to the authors' knowledge, the highest photothermal CO2 methanation rate in flow reactors. The remarkable activity originates from the abundant free volume and high internal energy state of HEMG, which lead to the extraordinary heterolytic H2 dissociation capacity. The high-entropy effect also ensures the excellent stability of HEMG for up to 450 h. This work not only provides a new perspective on the catalytic mechanism of HEMG, but also sheds light on the great catalytic potential in future carbon-negative industry.
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Affiliation(s)
- Xiwen Yu
- Eco-materials and Renewable Energy Research Center (ERERC), Collaborative innovation center of advanced microstructures, College of Engineering and Applied Sciences, Nanjing University, Hankou Road, Gulou, Nanjing, Jiangsu, 210093, China
| | - Xue Ding
- School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, Central Ave, Shenzhen, 518172, China
| | - Yingfang Yao
- Eco-materials and Renewable Energy Research Center (ERERC), Collaborative innovation center of advanced microstructures, College of Engineering and Applied Sciences, Nanjing University, Hankou Road, Gulou, Nanjing, Jiangsu, 210093, China
- School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, Central Ave, Shenzhen, 518172, China
- National Laboratory of Solid State Microstructures, Nanjing University, School of Physics, Nanjing University, Hankou Road, Gulou, Nanjing, Jiangsu, 210093, China
- Jiangsu Key Laboratory for Nano Technology, Nanjing University, Hankou Road, Gulou, Nanjing, Jiangsu, 210093, China
| | - Wanguo Gao
- National Laboratory of Solid State Microstructures, Nanjing University, School of Physics, Nanjing University, Hankou Road, Gulou, Nanjing, Jiangsu, 210093, China
| | - Cheng Wang
- Eco-materials and Renewable Energy Research Center (ERERC), Collaborative innovation center of advanced microstructures, College of Engineering and Applied Sciences, Nanjing University, Hankou Road, Gulou, Nanjing, Jiangsu, 210093, China
| | - Chengyang Wu
- Eco-materials and Renewable Energy Research Center (ERERC), Collaborative innovation center of advanced microstructures, College of Engineering and Applied Sciences, Nanjing University, Hankou Road, Gulou, Nanjing, Jiangsu, 210093, China
| | - Congping Wu
- Eco-materials and Renewable Energy Research Center (ERERC), Collaborative innovation center of advanced microstructures, College of Engineering and Applied Sciences, Nanjing University, Hankou Road, Gulou, Nanjing, Jiangsu, 210093, China
- National Laboratory of Solid State Microstructures, Nanjing University, School of Physics, Nanjing University, Hankou Road, Gulou, Nanjing, Jiangsu, 210093, China
- Jiangsu Key Laboratory for Nano Technology, Nanjing University, Hankou Road, Gulou, Nanjing, Jiangsu, 210093, China
| | - Bing Wang
- Eco-materials and Renewable Energy Research Center (ERERC), Collaborative innovation center of advanced microstructures, College of Engineering and Applied Sciences, Nanjing University, Hankou Road, Gulou, Nanjing, Jiangsu, 210093, China
- National Laboratory of Solid State Microstructures, Nanjing University, School of Physics, Nanjing University, Hankou Road, Gulou, Nanjing, Jiangsu, 210093, China
- Jiangsu Key Laboratory for Nano Technology, Nanjing University, Hankou Road, Gulou, Nanjing, Jiangsu, 210093, China
| | - Lu Wang
- School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, Central Ave, Shenzhen, 518172, China
| | - Zhigang Zou
- Eco-materials and Renewable Energy Research Center (ERERC), Collaborative innovation center of advanced microstructures, College of Engineering and Applied Sciences, Nanjing University, Hankou Road, Gulou, Nanjing, Jiangsu, 210093, China
- School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, Central Ave, Shenzhen, 518172, China
- National Laboratory of Solid State Microstructures, Nanjing University, School of Physics, Nanjing University, Hankou Road, Gulou, Nanjing, Jiangsu, 210093, China
- Jiangsu Key Laboratory for Nano Technology, Nanjing University, Hankou Road, Gulou, Nanjing, Jiangsu, 210093, China
- Macau Institute of Systems Engineering, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macau, 999078, China
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Ma Z, Kong K, Yin Y, Guo Z, Ma X, Lin Q, Wang J, Shen Y, Lu X, Xu X, Kong X, Liu Z, Tang R. High Mechanical Strength Alloy-like Minerals Prepared by Inorganic Ionic Co-cross-linking. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2308017. [PMID: 38009645 DOI: 10.1002/adma.202308017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 11/01/2023] [Indexed: 11/29/2023]
Abstract
Alloys often combine different metals to generate superior mechanical properties. However, it is challenging to prepare high mechanical strength minerals with similar strategies. Using calcium carbonate (CaC) and calcium phosphate (CaP) as examples, this work synthesizes a group of compounds with the chemical formulas Ca(CO3 )x (PO4 )2(1- x )/3 (0 < x < 1, CaCPs) by cross-linking ionic oligomers. Unlike mixtures, these CaCPs exhibit a single temperature for the phase transition from amorphous to crystallized CaC (calcite) and CaP (hydroxyapatite). By heat-induced synchronous crystallization, dual-phase CaC/CaP with continuous crystallized boundaries are resembled to alloy-like minerals (ALMs). The mechanical properties of the ALMs are adjusted by tailoring their chemical compositions to reach a hardness of 5.6 GPa, which exceed those of control calcite and hydroxyapatite samples by 430% and 260%, respectively. This strategy expands the chemical scope of inorganic materials and holds promise for preparing high-performance minerals.
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Affiliation(s)
- Zaiqiang Ma
- Department of Chemistry, Zhejiang University, Hangzhou, 310058, China
| | - Kangren Kong
- Department of Chemistry, Zhejiang University, Hangzhou, 310058, China
| | - Yu Yin
- Department of Chemistry, Zhejiang University, Hangzhou, 310058, China
| | - Zhengxi Guo
- Department of Chemistry, Zhejiang University, Hangzhou, 310058, China
| | - Xiaoming Ma
- Department of Chemistry, Zhejiang University, Hangzhou, 310058, China
| | - Qingyun Lin
- Center of Electron Microscopy, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Jie Wang
- Department of Chemistry, Zhejiang University, Hangzhou, 310058, China
| | - Yinlin Shen
- Department of Chemistry, Zhejiang University, Hangzhou, 310058, China
| | - Xingyu Lu
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Instrumentation and Service Centre for Molecular Sciences, Westlake University, Hangzhou, 310024, China
| | - Xurong Xu
- Qiushi Academy for Advanced Studies, Zhejiang University, Hangzhou, 310027, China
| | - Xueqian Kong
- Department of Chemistry, Zhejiang University, Hangzhou, 310058, China
- Institute of Translational Medicine, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Zhaoming Liu
- Department of Chemistry, Zhejiang University, Hangzhou, 310058, China
- State Key Laboratory of Silicon and Advanced Semiconductor Materials, Zhejiang University, Hangzhou, 310027, China
| | - Ruikang Tang
- Department of Chemistry, Zhejiang University, Hangzhou, 310058, China
- State Key Laboratory of Silicon and Advanced Semiconductor Materials, Zhejiang University, Hangzhou, 310027, China
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Zhang S, Yi W, Zhong J, Gao J, Lu Z, Zhang L. Computer Alloy Design of Ti Modified Al-Si-Mg-Sr Casting Alloys for Achieving Simultaneous Enhancement in Strength and Ductility. MATERIALS (BASEL, SWITZERLAND) 2022; 16:306. [PMID: 36614645 PMCID: PMC9822033 DOI: 10.3390/ma16010306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Revised: 12/12/2022] [Accepted: 12/23/2022] [Indexed: 06/17/2023]
Abstract
In this paper, an efficient design of a Ti-modified Al-Si-Mg-Sr casting alloy with simultaneously enhanced strength and ductility was achieved by integrating computational thermodynamics, machine learning, and key experiments within the Bayesian optimization framework. Firstly, a self-consistent Al-Si-Mg-Sr-Ti quinary thermodynamic database was established by the calculation of phase diagram method and verified by key experiments. Based on the established thermodynamic database, a high-throughput Scheil-Gulliver solidification simulation of the A356-0.005Sr alloy with different Ti contents was carried out to establish the "composition-microstructure" quantitative relationship of the alloy. Then, by combining the computational thermodynamic, machine learning, and experimental data within the Bayesian optimization framework, the relationship "composition/processing-microstructure-properties" of A356-0.005Sr with different Ti contents was constructed and validated by the key experiments. Furthermore, the optimum alloy composition of the Ti-modified A356-0.005Sr casting alloy was designed based on this integration method with the Bayesian optimization framework and verified by the experiments. It is anticipated that the present integration method may serve as a general one for the efficient design of casting alloys, especially in the high-dimensional composition space.
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Affiliation(s)
- Shaoji Zhang
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
| | - Wang Yi
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
| | - Jing Zhong
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
| | - Jianbao Gao
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
| | - Zhao Lu
- Guangxi Key Laboratory of Information Materials, School of Material Science and Engineering, Guilin University of Electronic Technology, Guilin 530004, China
| | - Lijun Zhang
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
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