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SSRN 2024年

作者： Li, Zhenping Xu, Hao Du, Yukun Huang, Zhongyu Li, Jing Liu, Lian Dong, Ying Yang, Xiao-Yu Department of Forensic Medicine Tongji Medical College Huazhong University of Science and Technology 13 Hangkong Road Wuhan430030 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Shenzhen Research Institute Laoshan Laboratory Wuhan University of Technology 122 Luoshi Road Wuhan430070 China Hubei Province Key Laboratory of Coal Conversion and New Carbon Materials School of Chemistry and Chemical Engineering Wuhan University of Science and Technology 947 Peace Avenue Wuhan430081 China Optosky Optical LTD 1130 Jimei North Avenue Xiamen361022 China Hubei Key Laboratory of the Forensic Science Hubei University of Police 99 Nanniwan Avenue Wuhan430034 China

Gamma-hydroxybutyric acid (GHB), which is used in drug-facilitated sexual assault, is typically delivered in the form of gamma-butyrolactone (GBL) in beverage carriers. In response to the growing need of methods for rapid and on-site sensing of the drugs, we carried out an investigation aimed at developing a superwettable microchip for visual detection of the date-rape drug GBL in adulterated beverages. The superwettable microchip is comprised of Fe3O4 nanoparticles which aggregate to form a reactive spot on a superhydrophobic fabric. The spot captures and confines microdroplets containing GBL on the superhydrophobic substrate. Fe(III), generated by HCl promoted reaction of the Fe3O4 spot, then participates in a colorimetric reaction with GBL to form a naked eye observable colored complex. Quantitative determination of GBL in beverages is achieved by analyzing the red-color content of a smartphone camera derived image. The detection range of this assay protocol is ca. 0.05-10 mg mL−1, which meets the requirements to detect potentially dangerous concentration of GBL in drinks. The detection stability of the superwettable microchip for GBL in water and common beverages is maintained over at least 30 cycles. © 2024, The Authors. All rights reserved.

关键词： Nanoparticles

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Twin-Induced Tensile Strengthening in a Laser Powder Bed Fusion Manufactured Haynes 188 Alloy by Heat Treatment

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SSRN 2022年

作者： Liu, Yang Huang, Zhifeng Zhang, Chi Lu, Jiaqi Ouyang, Ni Shen, Qiang Chen, Fei State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China International School of Materials Science and Engineering Wuhan University of Technology Wuhan430070 China Hubei Longzhong Laboratory Xiangyang441106 China Chaozhou Branch of Chemistry and Chemical Engineering Guangdong Laboratory Guangdong Chaozhou521000 China

Co and Ni superalloys have been widely used in aerospace. Abundant studies have been focused on additive manufactured Ni superalloys. However, the equally important Co superalloy has less been fabricated by additive manufacturing. In this work, Haynes 188 alloy, a kind of Co-based superalloy, is fabricated by using laser powder bed fusion. The microstructure and mechanical properties before and after heat treatment of the additive manufactured Haynes 188 alloys are investigated in detail. For the as-built specimen without heat treatment, the thermodynamic modeling predicts that eutectic carbides of M6C/M23C6 exist in the specimen, which is confirmed by the TEM EDS mapping result and SAED patterns. Arrayed stacking faults, dislocations, and M6C/M23C6 carbides are found in the specimen without heat treatment. The yield strength, ultimate tensile strength, and elongation of the specimen without heat treatment are 645 MPa, 928 MPa, and 57.3%, respectively. For the heat-treated specimen, the dislocation density is reduced, and the eutectic carbides are dissolved into the matrix, resulting in reducing the yield strength to 485 MPa. However, annealing twins can be found in the heat-treated specimen, and the twin-twin interaction between annealing twins and deformation twins enhances the pile-up of dislocations during the deformation. As a result, the ultimate tensile strength and elongation increase to 1001 MPa and 68.1%, respectively. The mechanical properties of fabricated Haynes 188 alloys in this work are superior to that of the published Ni or Co superalloys. This work provides an effective method to improve the mechanical properties of Co superalloys by additive manufacturing, which is important for the development of high-performance superalloys and their manufacturing methods. © 2022, The Authors. All rights reserved.

关键词： Precipitation (chemical)

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Confined Heterojunction in Hollow-Structured TiO2and Its Directed Effect in Photodriven Seawater Splitting

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ACS Nano 2023年第18期17卷 18217-18226页

作者： Shi-Tian Xiao Si-Ming Wu Lu Wu Yu Dong Jia-Wen Liu Li-Ying Wang Xin-Yi Chen Yi-Tian Wang Ge Tian Gang-Gang Chang Menny Shalom Paolo Fornasiero Xiao-Yu Yang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing & School of Materials Science and Engineering & School of Chemistry Chemical Engineering and Life Sciences & Shenzhen Research Institute & Laoshan Laboratory Wuhan University of Technology Wuhan 430070 China Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules College of Chemistry and Chemical Engineering Hubei University Wuhan 430062 China State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics National Center for Magnetic Resonance in Wuhan Wuhan Institute of Physics and Mathematics Innovation Academy for Precision Measurement Science and Technology Chinese Academy of Sciences Wuhan 430071 China Department of Chemistry and Ilse Katz Institute for Nanoscale Science and Technology Ben-Gurion University of the Negev Beer-Sheva 8410501 Israel Department of Chemical and Pharmaceutical Sciences University of Trieste and ICCOM-CNR and INSTM Trieste Research Units Via L. Giorgieri 1 34127 Trieste Italy

The high salinity of seawater often strongly affects the activity and stability of photocatalysts utilized for photodriven seawater splitting. The current investigation is focused on the photocatal...

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Rational Design of Air-Stable and Intact Anode-Electrolyte Interface for Garnet-Type Solid-state Batteries

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SSRN 2022年

作者： Zhang, Jiaxu Wang, Changhong Zheng, Matthew Ye, Minghao Zhai, Huiyu Li, Jun Tan, Gangjian Tang, Xinfeng Sun, Xueliang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China Department of Mechanical and Materials Engineering University of Western Ontario 1151 Richmond St. LondonONN6A 3K7 Canada

Garnet-type solid-state electrolytes are a promising fast lithium-ion conductor due to their high room-temperature ion conductivity and inherent stability against lithium metal. However, interfacial lithiophobic Li2CO3 makes garnet/Li interfacial ionic contact challenging. The general approach to physically or chemically eliminating Li2CO3 inevitably leads to a Li-deficiency layer at the garnet surface, significantly retarding interfacial ion transport. Contrary to the aforementioned approach, herein we chemically upcycle the Li2CO3 on the garnet surface via the double replacement reaction between Li2CO3 and SiO2. This approach in-situ constructs an air-stable and lithiophilic LixSiOy (LSO) on the garnet surface and averts the Li-deficiency layer formation. The LSO modified symmetric cell displays a low interfacial impedance of 3 Ω cm2 and a high critical current density of 1.2 mA cm−2 at 30 0C. This work provides a promising strategy to upcycle interfacial Li2CO3 on the garnet electrolyte. © 2022, The Authors. All rights reserved.

关键词： Garnets

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Eutectic Monbta(Wc)X Composites with Excellent Elevated Temperature Strength

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SSRN 2022年

作者： Kang, Kejia Wang, Xiao Zhou, Weibing Li, Peibo Huang, Zihao Luo, Guoqiang Shen, Qiang Zhang, Lianmeng School of Electromechanical Engineering Henan University of Technology Zhengzhou450001 China State Key Lab of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China Chaozhou Branch of Chemistry and Chemical Engineering Guangdong Laboratory Hanjiang Laboratory Chaozhou521000 China State Key Lab of Silicate Materials for Architecture Wuhan University of Technology Wuhan430070 China National United Engineering Laboratory for Advanced Bearing Tribology Henan University of Science and Technology Luoyang471000 China

To develop materials with promising utilization future in the extreme environments of aerospace, the MoNbTa(WC) x composites were prepared by vacuum arc melting, of which the crystal structure, microstructure, and compression properties at elevated temperature were investigated. The MoNbTa(WC) x composites had eutectic structures that consisted of body-centered cubic (BCC) phase and eutectoid structures. The lamellar fine eutectoid structures were composed of BCC structured high entropy alloy (HEA) Mo-Nb-Ta-W and FCC structured carbide Mo-Nb-Ta-W-C. It was demonstrated that the ductility and elevated temperature strength was enhanced simultaneously combined with the effect of eutectic structures and WC addition. The optimal true yield strength and true fracture strain reached 1205 MPa and 29.2% in MoNbTa(WC) 0.9 at 1200 ℃, meanwhile, the fracture strain at ambient temperature was 13.96%. Distinct strain hardening was observed at the initial deformation stage of MoNbTa(WC) 0.9 at 1200 ℃. The compression performances of MoNbTa(WC) x were superior in comparison with most refractory high entropy alloys. © 2022, The Authors. All rights reserved.

关键词： Eutectics

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Bilayer metal halide perovskite for efficient and stable solar cells and modules

材料展望（英文）

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材料展望（英文） 2022年第4期 49-68页

作者： Yanqing Zhu Min Hu Mi Xu Bo Zhang Fuzhi Huang Yi-Bing Cheng Jianfeng Lu State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070People's Republic of China School of Electronic and Electrical Engineering Hubei Province Engineering Research Centre for Intelligent Micro-Nano Medical Equipment and Key TechnologiesWuhan Textile UniversityWuhan 430200People's Republic of China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Foshan 528216People's Republic of China Shanxi Lu'An Photovoltaics Technology Co. LtdChangzhi 046011People's Republic of China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Foshan 528216People's Republic of China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070People's Republic of China State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070People's Republic of China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Foshan 528216People's Republic of China

To reach the target of carbon neutral,a transition from fossil energy to renewable energy is *** technology is considered one of the most prominent sources of renewable ***,metal halide perovskite materials have attracted tremendous interest in the areas of optoelectronic devices due to their ease of processing and outstanding *** date,perovskite solar cells(PSCs)have shown high power conversion efficiency up to 25.7％and 31.3％for the perovskite-silicon tandem solar cells,which promises to revolutionize the PV ***,the stability of PSCs under operating conditions has yet to match state-of-the-art silicon-based solar cell technology,in which the stability of the absorbing layer and relevant interfaces is the primary *** issues become more serious in the larger area solar modules due to the additional interfaces and more defects within the *** perovskite film composed of a thin low dimensional perovskite layer and a three-dimensional perovskite layer shows great potential in fabricating solar cells with high efficiency and stability *** this review,recent advancements,including composition design and processing methods for constructing bilayer perovskite films are *** then analyze the challenges and resolutions in deposition bilayer perovskite films with scalable *** summarizing the beneficial effect of the bilayer structure,we propose our thinking of feasible strategies to fabricate high efficiency perovskite solar modules with a long ***,we outline the directions for future work that will push the perovskite PV technology toward commercialization.

关键词： perovskite solar cell perovskite solar module bilayer stability scalable technique

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Ultrasonic-assisted soldering of 7075 Al alloy joint using Ni mesh reinforced SAC305 composite solder: microstructure, bonding ratio, and mechanical properties

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Ultrasonics Sonochemistry 2025年 120卷

作者： Dan Li Yong Xiao Yu Zhang Yu Zhao Jian Zhang Dan Luo School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China

Suppressing solder overflow has significant implications for promoting the application of ultrasonic-assisted soldering. In this work, an innovative strategy of adding metal mesh into Sn-based solder was utilized. 7075 Al alloy joints were ultrasonically soldered with Ni mesh reinforced SAC305 composite solders. The microstructure, bonding ratio, and shear properties of joints were systematically explored. Results showed that solder seams primarily consisted of Ni mesh, SAC305 solder, α-Al phase, Ag 3 Al 2 phase, (Ni, Cu) 3 Sn 4 phase, Al 3 (Ni, Cu) 2 phase, and dispersed fine particles. The bonding interface between Ni mesh and Al substrate could be divided into contact and non-contact regions. A polycrystalline Al 3 (Ni, Cu) 2 phase and a Cu-Al-O amorphous layer were formed at the contact regions. The bonding ratio of joints was mainly affected by the cavitation effects within non-contact regions. Adding Ni meshes could enhance the acoustic pressure and accelerate the flow of local solder in the solder seams. The decrease in the bonding ratio was attributed to the excessive solder flow, which induced the formation of defects. Benefiting from the intrinsic strengthening of Ni mesh and metallurgical reaction strengthening, Al/250#Ni-SAC/Al joints exhibited a shear strength of 71.87 MPa.

关键词： Ni mesh-SAC composite solder Ultrasonic-assisted soldering Bonding ratio of joints Acoustic pressure Acoustic streaming Shear properties

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Robust MOF-253-derived N-doped carbon confinement of Pt single nanocrystal electrocatalysts for oxygen evolution reaction

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Chinese Journal of Catalysis 2020年第5期41卷 839-846页

作者： Hellen Gabriela Rivera Monestel Ibrahim Saana Amiinu Andrés Alvarado González Zonghua Pu BibiMaryam Mousavi Shichun Mu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070HubeiChina School of Chemistry Chemical Engineering and Life SciencesWuhan University of TechnologyWuhan 430070HubeiChina

Although carbon-supported platinum(Pt/C) is still considered the most active electrocatalyst for hydrogen evolution reaction(HER) and oxygen reduction reaction(ORR), its applications in metal–air batteries as a cathode catalyst, or for oxygen generation via water splitting electrolysis as an anode catalyst is mainly constrained by the insufficient kinetic activity and stability in the oxygen evolution reaction(OER). Here, MOF-253-derived nitrogen-doped carbon(N/C)-confined Pt single nanocrystals(Pt@N/C) have been synthesized and shown to be efficient catalysts for the OER. Even with low Pt mass loading of 6.1 wt%(Pt@N/C-10), the catalyst exhibits greatly improved activity and long-time stability as an efficient OER catalyst. Such high catalytic performance is attributed to the core-shell structure relationship, in which the active N-doped-C shell not only provides a protective shield to avoid rapid Pt nanocrystal oxidation at high potentials and inhibits the Pt migration and agglomeration, but also improves the conductivity and charge transfer kinetics.

关键词： Pt MOF-253 Carbon confinement Oxygen evolution reaction Electrocatalyst

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Improvement of the Degradation Activity of Phanerochaete Chrysosporium by Hybridization with Silica Nanoparticles

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SSRN 2023年

作者： Li, Qichang Geng, Wei Hu, Zhiyi Lu, Yi Xie, Hao Deng, Zhao Yang, Xiaoyu Li, Yu Su, Baolian State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology 122 Luoshi Road Wuhan China Laboratory of Inorganic Materials Chemistry University of Namur 61 rue de Bruxelles NamurB-5000 Belgium School of Chemistry Chemical Engineering and Life Sciences Wuhan University of Technology 122 Luoshi Road Wuhan China Heinrich Heine University Düsseldorf Germany Harvard University United States

Silica nanoparticle hybridized P. chrysosporium mycelia pellets was prepare by a simple one-step composite technology-based approach, involving co-culturing silica nanoparticles with this fungus under mild culture conditions. The generated hybrid displays greatly improved peroxidase activity which reaches a maximum on the 5th day of culturing. Hybridization causes a morphology change and significantly enhances the rate of crystal violet degradation, the amounts of excreted extracellular manganese peroxidase and hydrogen peroxide, and the rate of glucose consumption. The results show that hybridization with silica nanoparticles significantly enhances of the degradation activity of P. chrysosporium cells. © 2023, The Authors. All rights reserved.

关键词： Silica nanoparticles

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Unraveling the Atomic Structure Evolution of Titanium Nitride Upon Oxidation

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SSRN 2024年

作者： Hao, Ronghui Miao, Wenkang Xu, Wanyin Lin, Yicheng Xiao, Qi-Ling Wang, Zihan Li, Qianqian Wang, Peng Wang, Tianzhong Nie, Anmin Wu, Jinsong Wang, Hong Tao State Key Laboratory of Advanced Technology for Materials Synthesis and Processing China Materials Genome Institute Shanghai University Shanghai200444 China Shanghai Key Laboratory of Mechanics in Energy Engineering Shanghai Institute of Applied Mathematics and Mechanics School of Mechanics and Engineering Science Shanghai University Shanghai200444 China China Academy of Engineering Physics Mianyang621000 China Center for High Pressure Science State Key Laboratory of Metastable Materials Science and Technology Yanshan University Qinhuangdao066004 China Nanostructure Research Center Wuhan University of Technology Wuhan430070 China Center for X-mechanics Zhejiang University Hangzhou310027 China Institute of Applied Mechanics Zhejiang University Hangzhou310027 China

In this study, state-of-the-art aberration-corrected environmental transmission electron microscopy is utilized to investigate the atomic-scale structural evolution of titanium nitride during dynamic oxidation. Titanium nitride oxidation originates from the migration of Ti atoms along {200} that results in two distinct reaction pathways, characterized by the formation of chains of titanium vacancies and staggered titanium vacancies. We demonstrate that titanium atoms exhibit varied oxidation activity on different crystal facets, with the selection of oxidation pathways significantly influenced by the curvature of the crystal surface, which is also supported by the First Principles Calculations. © 2024, The Authors. All rights reserved.

关键词： High resolution transmission electron microscopy

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