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SSRN 2022年

作者： Zhao, Xingming Zhao, Fachang Zhang, Jian Wang, Weizhen Wang, Tianlin Lu, Xiaoming Zhang, Chi Wang, Mingguan Wu, Fufa Qi, Yang Material Processing Engineering School of Materials Science and Engineering Liaoning University of Technology Jinzhou121001 China Department of Materials Physics and Chemistry School of Materials Science and Engineering State Key Laboratory of Rolling and Automation Northeastern University Liaoning Shenyang110819 China Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Science Liaoning Shenyang110016 China Department of Physics and Biophysics School of Fundamental Sciences China Medical University Liaoning Shenyang110122 China

In view of the fact that interface structure and strain have significant effects on the performance of superconducting films with heterogeneous structures, the interface structure and strain of the Bi 2 Sr 2 CaCu 2 O 8+ δ superconducting thin film fabricated with the sol-gel technique were investigated by aberration-corrected HAADF-STEM, EDX and GPA. The results revealed that the interfacial atomic sequence was LaAlO 3 (AlO 2 terminated)-SrO-(Bi2212) n , where the -SrO- layer was the nucleation layer, and (Bi2212) n included intergrowth the phase of Bi2201, Bi2212 and Bi2223 . In addition, in-plane compressive strain (Ε xx ~ -0.4501%) related to the structure of the Bi2212/LaAlO 3 heterostructure, gradually released as the distance away from the heterointerface increased. Simultaneously, the thin film revealed a higher T c, onset of 95 K compared to that of a single crystal, which indicated that compressive stress had a positive effect on the superconducting performance of the film. © 2022, The Authors. All rights reserved.

关键词： Superconducting films

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A facile,versatile hydrogel bioink for 3D bioprinting benefits long-term subaqueous fidelity,cell viability and proliferation

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Regenerative Biomaterials 2021年第3期8卷 141-155页

作者： Hongqing Chen Fei Fei Xinda Li Zhenguo Nie Dezhi Zhou Libiao Liu Jing Zhang Haitao Zhang Zhou Fei Tao Xu Department of Neurosurgery Xijing HospitalFourth Military Medical UniversityXi’an 710032China Department of Neurosurgery Central Theater General HospitalWuhan 430010China Department of Ophthalmology Xijing HospitalFourth Military Medical UniversityXi’an 710032China Biomanufacturing and Rapid Forming Technology Key Laboratory of Beijing Department of Mechanical EngineeringTsinghua UniversityBeijing 100084China Key Laboratory for Advanced Materials Processing Technology Ministry of EducationDepartment of Mechanical EngineeringTsinghua UniversityBeijing 100084China Department of Neurosurgery Sichuan Provincial People’s HospitalUniversity of Electronic Science and Technology of ChinaChengdu 610072China Chinese Academy of Sciences Sichuan Translational Medicine Research Hospital Chengdu 610072China Department of Orthopedics Fourth medical center of PLA general hospitalBeijing 100048China East China Institute of Digital Medical Engineering Shangrao 334000China Department of Precision Medicine and Healthcare Tsinghua-Berkeley Shenzhen InstituteShenzhen 518055China

Both of the long-term fidelity and cell viability of three-dimensional(3D)-bioprinted constructs are essential to precise soft tissue ***,the shrinking/swelling behavior of hydrogels brings about inadequate long-term fidelity of constructs,and bioinks containing excessive polymer are detrimental to cell ***,we obtained a facile hydrogel by introducing 1%aldehyde hyaluronic acid(AHA)and 0.375%N-carboxymethyl chitosan(CMC),two polysaccharides with strong water absorption and water retention capacity,into classic gelatin(GEL,5%)–alginate(ALG,1%)*** GEL–ALG/CMC/AHA bioink possesses weak temperature dependence due to the Schiff base linkage of CMC/AHA and electrostatic interaction of CMC/*** fabricated integrated constructs through traditional printing at room temperature and in vivo simulation printing at *** printed cell-laden constructs can maintain subaqueous fidelity for 30 days after being reinforced by 3%calcium chloride for only 20 *** cytometry results showed that the cell viability was 91.3861.55%on day 29,and the cells in the proliferation plateau at this time still maintained their dynamic renewal with a DNA replication rate of 6.0661.24%.This work provides a convenient and practical bioink option for 3D bioprinting in precise soft tissue repair.

关键词： bioink bioprinting subaqueous fidelity cell viability

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Construction of S-scheme heterojunction within Sn QDs/TiO 2 @N, O-containing biochar composite photocatalyst for efficient removal of dye and antibiotic

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Journal of Alloys and Compounds 2024年 1004卷

作者： Wei Gao Yuyan Wang Ming Zhong Fangzhen He Na Dong Bitao Su Ziqiang Lei Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education of China Key Laboratory of Polymer Materials of Gansu Province College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou 730070 PR China State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals Lanzhou University of Technology Lanzhou 730050 PR China Department of Chemistry Gansu Medical College Pingliang 744000 PR China

Semiconductor titanium dioxide (TiO 2 ) has garnered significant attention in photocatalysis field, but the wide bandgap and fast recombination of photogenerated electron-hole pairs severely hamper its extensive application. Herein, we present a novel biomass-assisted strategy to construct S-scheme heterojunction tin quantum dots-modified titanium dioxide@nitrogen, oxygen-containing biochar composite photocatalyst (Sn QDs/TiO 2 @biochar). The influence of pyrolysis temperature, biomass amount, and Sn content on adsorptive and UV-/Vis-photocatalytic performance of Sn QDs/TiO 2 @biochar were systematically optimized. The optimally-prepared catalyst displays a full light absorptive response feature and improved adsorptive and UV-/Vis-photocatalytic performance in the removal of high concentration methylene dye and tetracycline hydrochloride. The excellent performance of Sn QDs/TiO 2 @biochar is attributed to the enhanced synergic effects among many factors, such as multi-functions of each component, series size quantum effects of Sn QDs, heterojunctions, especially S-scheme heterojunction between Sn QDs and TiO 2 . Furthermore, a plausible photocatalytic mechanism was proposed. This study may provide a simple and sustainable approach for constructing environmentally friendly, cost-effective, and high-performance photocatalysts.

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Single-atomic Co-B2N2 sites anchored on carbon conversion in lithium–sulfur batteries

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Carbon Energy 2023年第11期 5-17页

作者： Zhifeng Wang Yajing Yan Yongguang Zhang Yanxu Chen Xianyun Peng Xin Wang Weimin Zhao Chunling Qin Qian Liu Xijun Liu Zhongwei Chen Key Laboratory for New Type of Functional Materials in Hebei Province School of Materials Science and Engineering Hebei University of Technology Tianjin Key Lab for Photoelectric Materials & Devices Institute for New Energy Materials & Low-Carbon Technologies School of Materials Science and Engineering Tianjin University of Technology South China Academy of Advanced Optoelectronics International Academy of Optoelectronics at Zhaoqing South China Normal University Institute for Advanced Study Chengdu University MOE Key Laboratory of New Processing Technology for Non-Ferrous Metals and Materials Guangxi Key Laboratory of Processing for Non-Ferrous Metals and Featured Materials School of Resource Environments and Materials Guangxi University Department of Chemical Engineering University of Waterloo

Due to low cost, high capacity, and high energy density, lithium–sulfur（Li–S）batteries have attracted much attention; however, their cycling performance was largely limited by the poor redox kinetics and low sulfur ***, predicted by density functional theory calculations, single-atomic CoB2N2site-imbedded boron and nitrogen co-doped carbon nanotubes（SA-Co/BNC） were designed to accomplish high sulfur loading, fast kinetic, and long service period Li–S batteries. Experiments proved that Co-B2N2atomic sites can effectively catalyze lithium polysulfide conversion. Therefore, the electrodes delivered a specific capacity of 1106 mAh g-1at 0.2 C after 100 cycles and exhibited an outstanding cycle performance over 1000 cycles at 1 C with a decay rate of 0.032% per cycle. Our study offers a new strategy to couple the combined effect of nanocarriers and single-atomic catalysts in novel coordination environments for high-performance Li–S batteries.

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Thermoplastic micro-formability of TiZrHfNiCuBe high entropy metallic glass

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Journal of materials Science & technology 2018年第11期34卷 2006-2013页

作者： Xinyun Wang Wenlei Dai Mao Zhang Pan Gong Ning Li State Key Laboratory for Materials Processing and Die & Mould Technology and School of Materials Science and Engineering Huazhong University of Science and Technology State Key Laboratory of Advanced Welding and Joining Harbin Institute of Technology

High entropy metallic glasses（MGs） have attracted tremendous attentions owing to high entropy that benefits the probing of new MG-forming systems. However, the micro-formability of high entropy MGs is lack of investigation in comparison with these conventional MG counterparts, which is crucial to the development of this kind of metallic alloys. In this work, the thermoplastic mciro-formability of TiZrHfNiCuBe high entropy MG was systemically investigated. Time-Temperature-Transformation（TTT）curve was first constructed based on isothermal crystallization experiments, which provides thermoplastic processing time of the supercooled high entropy MGs. By comparison with the deformation map,Newtonian flow was found beneficial to the thermoplastic formability. While the thermoplastic forming becomes arduous with reducing mould size to tens micrometer, because of the strong supercooled TiZrHfNiCuBe high entropy MG（fragility = 27）. Fortunately, the micro-formability of TiZrHfNiCuBe high entropy MG could be improved by vibration loading, as demonstrated by finite-element-method simulation. Our findings not only systemically evaluate the thermoplastic micro-formability of high entropy MG, but also provide fundamental understanding of the phenomenon.

关键词： Metallic glass High entropy Thermoplastic forming Supercooled liquid region

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Highly green fluorescent Nb2C MXene quantum dots for Cu2+ion sensing and cell imaging

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Chinese Chemical Letters 2020年第12期31卷 3173-3177页

作者： Xiang Yan Junfei Ma Kaixuan Yu Jiapeng Li Lei Yang Jjiaqi Liu Juncheng Wang Lulu Cai School of Materials Science and Engineering.Baise University.Baise 533000 China State Key Laboratory of Heavy Oilt Processing China University of Petroleum-BeijingBeijing 102249China Personalized Drug Therapy Key Laboratory of Sichuan Province Department of PharmacySichuan Provincial Peoples Hospital School MedicineUniversity of Electronic Science and Technology of China.Chengdu 610072China Stomatology Department of the General Haspital of Chinese PLA Beijing 100853China

Niobium carbide MXene quantum dots(Nb2 C MQDs)derived from 2 D Nb2 CTx(MXene)are the rising-star material ***,a sulfur and nitrogen co-doped Nb2 C MQDs(S,N-MQDs)were synthesized through a hydrothermal *** obtained Nb2 C MQDs have excellent green fluorescence with a quantum yield(QY)of 17.25%.In addition,they exhibited excitatio n-dependent photoluminescence,antiphotobleaching and dispersion *** emit light at 520 nm when excited at 390 *** Nb2 C MQDs could be successfully applied to copper ion detection with detection limit of 2μmol/L and Caco-2 cells imaging.

关键词： 2D-QDs Nb2C-Mxene Cell imaging Ion sensing Sulfur-nitrogen co-doping

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Enhanced Thermoelectric Performance of Non-equilibrium Synthesized Fe0.4Co3.6Sb12-xGex Skutterudites via Randomly Distributed Multi-scaled Impurity Dots

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Journal of Wuhan University of technology(materials Science) 2018年第4期33卷 772-777页

作者：章嵩 HU Xuan 杨梅君 CHENG Hong TU Rong ZHANG Lianmeng State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China The Center for Materials Research and Analysis Wuhan University of TechnologyWuhan 430070China

The p-type Ge doped Fe0.4Co3.6Sb12-xGex skutterudites with multi-scaled impurity dots（500 nm-2 mm） were successfully prepared by using melt-quenching（MQ） and subsequent spark plasma sintering（SPS） technique. Compared with traditional method, the new technology significantly shortened the processing time from several days to less than 24 hours. The phase of impurity dots was demonstrated to be CoSb through analysis of X-ray diffraction（XRD） and energy-dispersive spectrum（EDS）. Impurity dots were induced by Ge substitution of Sb in the non-equilibrium synthesized process. Due to the abandonment of the long reaction of annealing crystallization, a few of Ge atoms would fail to substitute Sb site of skutterudite in this non-equilibrium synthesized process, leading to that the multi-scaled impurity dots randomly distributed in the matrix of skutterudite Fe0.4Co3.6Sb12-xGex. The combination of multi-scaled impurity dots scattering long wavelength heat-carrying phonons and the point defect scattering short and middle wavelength heat-carrying phonons dramatically made the 22.2% reduction of lattice thermal conductivity. As a result, compared with unsubstituted sample of Fe0.4Co3.6Sb12, the maximum ZT value was increased by 30.5%. Thus, the two marked features of this new synthesis process, the shortened preparation time and the enhanced thermoelectric performance, would make a promising commercial application in the future.

关键词： multi-scaled impurity dots Sb site substitution p-type thermoelectric transport properties

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Ball Milling Enhanced Magnetic Corn Straw Biochar for Peroxyacetic Acid Activation Towards Efficient Degradation of Sulfadiazine

SSRN

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SSRN 2022年

作者： Zeng, Chenyu Qian, Shufang Ma, Yongfei Chen, Xi Li, Ping Zhu, Jinyao Deng, Zhikang Ding, Yongzhen Qi, Xuebin Zhang, Zulin Hubei Key Laboratory of Mineral Resources Processing and Environment School of Resources and Environmental Engineering State Key Laboratory of Silicate Materials for Architectures Wuhan University of Technology Wuhan430070 China Agro-Environmental Protection Institute Ministry of Agriculture and Rural Affairs Tianjin300191 China The James Hutton Institute Craigiebuckler AberdeenAB15 8QH United Kingdom Northeast Agricultural University China

A heterogeneous catalyst of ball-milling magnetic corn straw biochar (BMCBC) was the first time synthesized to activate peroxyacetic acid (PAA) for efficient degradation of sulfadiazine (SDZ). The results showed that large surface area and magnetic Fe3O4 of BMCBC enhanced its activation performance for PAA. The removal efficiency of SDZ could reach 93% within 60 min in PAA/BMCBC system. Solution pH, CO32-, NO3-, Cl- were the critical environmental factors affecting the degradation process, can inhibit the degradation process. The reactive oxygen species (ROS) identification, quenching experiments and Raman spectra analysis demonstrated that •OH and R-O• were the main contributors to SDZ degradation. All of SDZ were oxidated into less toxic transformed products (TPs). Three degradation pathways of SDZ were proposed and Pathway III was considered as the dominant degradation pathway. Also, PAA/BMCBC system built in this study exhibited the excellent high removal rates for SDZ in real waters including Yangtze River water (84.32%), lake water (73.95%), tap water(93.3%) and pure water (91.29%). Additionally, BMCBC showed the good environmental safety in a wide pH range (from 5 to 11) with the low leaching levels of Fe. The magnetic sensitivity of BMCBC allowed it to be easily collected within 10 min, and it could maintain sustainable activation performance for PAA even after four reuse cycles. This study developed a promising method for antibiotics elimination, as well as the resource utilization of corn straw. © 2022, The Authors. All rights reserved.

关键词： Ball milling

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A mini-review of noble-metal-free electrocatalysts for overall water splitting in non-alkaline electrolytes

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materials Reports(Energy) 2021年第2期1卷 48-60页

作者： Jie Yu Yawen Dai Qijiao He Dongqi Zhao Zongping Shao Meng Ni Department of Building and Real Estate The Hong Kong Polytechnic UniversityHung HomKowloonHong Kong999077PR China School of Artificial Intelligence and Automation Key Laboratory of Image Processing and Intelligent Control of Education MinistryHuazhong University of Science and TechnologyWuhan430074PR China State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech UniversityNanjing210009PR China Department of Chemical Engineering Curtin UniversityPerthWestern Australia6845Australia Environmental Energy Research Group Research Institute for Sustainable Urban Development(RISUD)The Hong Kong Polytechnic UniversityHung HomKowloonHong Kong999077PR China

Development of noble-metal-free materials with remarkable electrocatalytic water-splitting performance in acidic or neutral media has sparked considerable attention in recent ***,we review the latest research on design and fabrication of precious-metal-free catalytic materials for overall water electrolysis in non-alkaline environment,especially highlighting several optimizing approaches to enhance the catalytic behavior and to realize effective bifunctional *** these involved noble-metal-free electrocatalysts are classified into transition-metal oxides(TMOs),transition-metal nitrides(TMNs),transition-metal carbides(TMCs),transition-metal phosphides(TMPs),transition-metal chalcogenides,metal complexes,and metal-free carbons,as shown in the main ***,the paper also offers an introduction of the fundamental electrochemistry of water splitting before entering the subject,as well as a prospective discussion on mechanism understanding,novel catalysts fabrication,and standardized performance measurements/evaluation in the last section.

关键词： Noble-metal-free electrocatalyst Overall water splitting Oxygen evolution reaction Hydrogen evolution reaction Non-alkaline electrolyte Bifunctional catalytic electrode

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Super simple and green synthesis of bifunctional iron oxide anchored on graphene oxide-like carbon composite

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Chemical Engineering Science 2023年 268卷

作者： Fangzhen He Yanmei Ren Yuqing Wang Ming Zhong Zhiwang Yang Bitao Su Ziqiang Lei Key Laboratory of Eco-Functional Polymer Materials of the Ministry of Education Key Laboratory of Eco-Environmental Polymer Materials of Gansu Province College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou 730070 PR China State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals Lanzhou University of Technology Lanzhou 730050 PR China

A super simple and green strategy is proposed to synthesize iron oxide and graphene oxide-like carbon composite. During preparation, ferrous gluconate was used as iron and carbon sources and oxidant, and deionized water as solvent without any other additives. The possible transform mechanism was proposed. Particularly, the optimal composite delivers excellent magnetic property and lithium storage performance.

关键词： Fe 3 O 4 /graphene oxide-like carbon synthesis Magnetism Lithium-ion battery

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