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SSRN 2023年

作者： Yang, Jinxiang Wang, Zihao Xiao, Wei Peng, Yan Qiu, Meishuang Xiong, Xiaorong Lu, Yizhuo Chen, Tianyou Xu, Zushun Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials Hubei Key Laboratory of Polymer Materials School of Materials Science and Engineering Hubei University Wuhan430062 China

Zn(II)-complex-based nanozymes have been extensively used for the cleavage of carboxylic esters and phosphate esters. Cooperativity between neighboring Zn(II) complexes is of paramount importance for the development of Zn(II)-complex-based nanozymes with excellent efficiency. Here, we have developed a controllable synthetic strategy for the construction of Zn(II)-complex-based nanozymes by using the nanoprecipitation technique, which could bring Zn(II) complexes in close proximity and regulate their microenvironments. Linear copolymers containing di(2-picolyl)amine moieties were used for the preparation of Zn(II)-complex-based nanozymes by the coordination between di(2-picolyl)amine and Zn(II) ion. These Zn(II)-complex-based nanozymes displayed excellent catalytic performance in the hydrolysis of carboxylic esters. Moreover, hydrophobic Fe3O4 nanoparticles could be incorporated into Zn(II)-complex-based nanozymes via the one-step nanoprecipitation approach, enabling the recovery of nanozymes by using a permanent magnet. Such nanozymes effectively catalyzed the hydrolysis of methyl parathion, which is highly resistant to spontaneous hydrolysis and is extremely hazardous. These nanozymes may find application in the hydrolysis of hazardous carboxylic esters and phosphate esters. © 2023, The Authors. All rights reserved.

关键词： Hydrolysis

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Making magnesium from low-grade magnesite: Experimental verification and life cycle assessment

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Journal of Magnesium and Alloys 2025年

作者： Huang, Xiaorui Xu, Zifu Fu, Liangliang Han, Zhennan Zhao, Kun Wang, Kangjun Bai, Dingrong Xu, Guangwen School of Chemical Engineering University of Science and Technology Liaoning Anshan114051 China Key Laboratory on Resources Chemicals and Materials of Ministry of Education Shenyang University of Chemical Technology Shenyang110142 China

China, as the world‘s largest producer and exporter of metallic magnesium, there are plenty of manufactures in the western provinces using the silicothermic method known as the Pidgeon process. The raw material used is usually dolomite containing about 20 wt.% element Mg. Liaoning province in the northeast China has up to 87 % of the national magnesite reserves, which contains 2–4 times more element Mg than dolomite does. How to economically produce metallic magnesium using magnesite is thus of significance for not only the local industry but also the flexible production of metal magnesium. This study proposed a process to produce magnesium using low-grade magnesite and further validated the proposal through experiments. Models of life cycle analysis are in turn formulated to evaluate the energy consumption and economic performance of the entire process proposed by taking the required source data from the Chinese Life Cycle Database (CLCD). The data comprehensively consider a variety of process equipment, energy supply pathways and geographical environments. In comparison with the Pidgeon process, the proposed pathway exhibited the best economic performance through its utilizing low-grade magnesite as the raw ore containing Mg and coke oven gas from steelworks as the fuel. © 2025

关键词： Magnesite

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Deterministic assembly of single optical cavity formed by gold dimensional DNA origami

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Nano Research 2022年第2期15卷 1327-1337页

作者： Zhi Zhao Xiahui Chen Jiawei Zuo Ali Basiri Shinhyuk Choi Yu Yao Yan Liu Chao Wang Center for Molecular Design and Biomimetics at the Biodesign Institute Arizona State UniversityTempeArizona 85287USA School of Molecular Sciences Arizona State UniversityTempeAZ 85287USA School of Electrical Computer and Energy EngineeringArizona State UniversityTempeAZ 85287USA Faculty of Materials and Manufacturing Key Laboratory of Advanced Functional MaterialsEducation Ministry of ChinaBeijing University of TechnologyBeijing 100124China

Controllable strong interactions between a nanocavity and a single emitter is important to manipulating optical emission in a nanophotonic system but challenging to *** a three-dimensional DNA origami,named as DNA rack(DR)is proposed and demonstrated to deterministically and precisely assemble single emitters within ultra-small plasmonic nanocavities formed by closely coupled gold nanorods(AuNRs).Uniquely,the DR is in a saddle shape,with two tubular grooves that geometrically allow a snug fit and linearly align two AuNRs with a bending angle <10°.It also includes a spacer at the saddle point to maintain the gap between AuNRs as small as 2-3 nm,forming a nanocavity estimated to be 20 nm^(3) and an experimentally measured O factor of 7.3.A DNA docking strand is designed at the spacer to position a single fluorescent emitter at nanometer accuracy within the *** Cy5 as a model emitter,a -30-fold fluorescence enhancement and a significantly reduced emission lifetime(from 1.6 ns to 670 ps)were experimentally verified,confirming significant emitter-cavity *** DR-templated assembly method is capable of fitting AuNRs of variable length-to-width aspect ratios to form anisotropic nanocavities and deterministically incorporate different single emitters,thus enabling flexible design of both cavity resonance and emission wavelengths to tailor light-matter interactions at nanometer scale.

关键词： DNA origami self-assembly deterministic single emitter plasmonic nanocavity nanorod dimer optical coupling

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The application of diatomic catalysts in advanced oxidation Fenton-like water treatment technology:A mini review

Environmental Functional Materials

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Environmental Functional materials 2024年第1期3卷 59-71页

作者： Ran Zhao Xiao-Wen Yang Tian-Hao Li Tian-Miao Yu Fang-Yuan Chen Zhu-Rui Shen School of Materials Science and Engineering Nankai University Tianjin 300350 PR China The Key Laboratory of Water and Sediment Sciences Ministry of Education College of Environmental Sciences and Engineering Peking University Beijing 100871 PR China

In the past few years, there has been a widespread utilization of diatomic catalysts in the catalysis sector because of their distinct benefits. In this review, we specify the application of diatomic catalysts based on carbon and carbon nitride in the Fenton-like field. This paper focuses on the synthesis and characterization of homonuclear and heteronuclear diatomic catalysts and methods to improve the catalytic performance by optimizing d-band structure, tuning charge transfer, and constructing spin states. There is no doubt that diatomic catalysts have bright prospects in the Fenton-like field.

关键词： Diatomic catalyst Fenton-like Carbon Carbon nitride

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Development of Nucleobase Functionalized Sulfonated Poly(Ether Ether Ketone) Electrodialysis Membranes with Enhanced Proton Flux and Permselectivity

SSRN

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SSRN 2023年

作者： Jiang, Zhijian Wang, Qian Tan, Qian Wang, Yue Wu, Juan Xu, Zushun Zhang, Quanyuan Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials Hubei Key Laboratory of Polymer Materials School of Materials Science and Engineering Hubei University Wuhan430062 China

Recycling and utilizing of pickling wastewater have become a hot issue in industrial wastewater treatment. Electrodialysis has the advantages of simple operation, low energy consumption and environmental friendliness, making it an efficient and sustainable waste acid recovery technology. In this work, two series of nucleobase functionalized sulfonated poly(ether ether ketone)s (SPEEK) with different degrees of adenine (SPEEK-xA) or cytosine (SPEEK-xC) were successfully synthesized. The introduction of nucleobase groups can form acid-base pairs with SO3H groups in SPEEK, thereby improving the thermal and mechanical properties of the membranes. The tensile strength of the SPEEK-xA and SPEEK-xC membranes ranged from 56.9 to 75.3 MPa, which was 1.2-1.6 times that of the unmodified SPEEK membrane, while the elongation at break was between 22.3% and 34.7%, which was more than 70% lower than that of SPEEK. After the introduction of nucleobase groups, due to the proton binding ability of the multiple N atoms in the nucleobase units, the H+ fluxes of the SPEEK-10A and SPEEK-10C membranes during electrodialysis increased by about 10% compared to the SPEEK membrane, reaching 1.06 and 1.03 mmol·m-2·s-1, respectively. Remarkably, all modified membranes showed much higher H+/Fe2+ permselectivity than SPEEK because of the strong repulsive effect of protonated planar nucleobase cations. The permselectivities of the SPEEK-10A and SPEEK-10C membranes were as high as 91.6 and 94.8, respectively, which were 6.0-6.2 times higher than that of SPEEK. Therefore, the introduction of nucleobase groups into SPEEK not only increases proton flux but also enhances the permselectivity between H+ and divalent metal ions. © 2023, The Authors. All rights reserved.

关键词： Electrodialysis

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Study on the effects of alternating capacitive electric fields with different frequencies on promoting wound healing

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Medicine in Novel Technology and Devices 2022年第4期16卷 42-50页

作者： Yunxue Jia Junwei Xu Qiusheng Shi Lisha Zheng Meili Liu Ming Wang Ping Li Yubo Fan Key Laboratory of Biomechanics and Mechanobiology of Ministry of Education Beijing Advanced Innovation Center for Biomedical EngineeringSchool of Biological Science and Medical EngineeringBeihang UniversityBeijing100083China Beijing Key Laboratory of Bioelectromagnetism Institute of Electrical EngineeringChinese Academy of SciencesBeijing100190China School of Medical Science and Engineering Beihang UniversityBeijing100083China

Some researches to facilitate wound healing by using electrical stimulation are based on electric current stimulation,which may cause secondary damage and the imbalance of the microenvironment in *** this study,alternating capacitive electric field(ACEF)was applied via a self-designed system so as to avoid direct contact with cells and to maintain stable microenvironment for cell *** influences of 58 mV/mm ACEFs with various frequencies of 10,60 and 110 Hz on epidermal cells,fibroblasts and macrophages which involve in wound healing were comprehensively *** results suggested that ACEFs of 10,60 and 110 Hz all significantly promoted the proliferation of human dermal fibroblasts(HDFs)and human epidermal keratinocyte cell line(HaCaT)cells,and 60 Hz ACEF furtherly accelerated the migration of these two kinds of ***,ACEFs of all different studied frequencies facilitated M2-type polarization of macrophages,and YAP/TAZ expression of macrophages were enhanced under the stimulations of 10 and 60 Hz *** enhancements in cell activity,migration rate and M2-type polarizability indicated that 58 mV/mm ACEFs especially at 60 Hz possessing potentially affirmative applications for wound healing without the risks of secondary damage and microenvironment imbalance.

关键词： Alternating capacitive electric field Frequency Human dermal fibroblasts Human epidermal keratinocyte cell line Macrophages Wound healing

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Poly(N-Acryloyl Glycinamide) Conducted "Thermo-Schizophrenic" Graphene Oxide Membrane

SSRN

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SSRN 2023年

作者： Tian, Ye Li, Xiangyu Ji, Jiujiang Zhai, Huajun Zhao, Shuaiheng Liu, Yue Liu, Na Li, Chun Wei, Yen Feng, Lin Engineering Research Center of Advanced Rare Earth Materials Ministry of Education Department of Chemistry Tsinghua University Beijing100084 China Shenyang National Laboratory for Materials Science Electrobiomaterials Institute Key Laboratory for Anisotropy and Texture of Materials Ministry of Education Northeastern University Shenyang110819 China

A poly(N-acryloyl glycinamide) (PNAGA) conducted smart graphene oxide (GO) membrane was fabricated, which exhibits a unique "thermo-schizophrenic" phenomenon. The combination of supramolecular interactions at different temperatures and confined nano-channels was considered to arouse such new properties. The aggregation of PNAGA fragments, homogeneously polymer distribution, and chain stretching based on supramolecular interactions at different temperatures, cause the "thermo-schizophrenic" feature. The limited size of the nano-channel constructed by GO also contributed to this newfangled adjustable superfluid phenomenon. Overall, this work provides a substantial and definitive complementarity to the unique application of PNAGA at different temperatures. It induces a way to prove the significance and specialty of the confined spacing in designing the 2D-nanofiltration membrane. This strategy also gives valuable guidance for designing smarter materials using a single homopolymer. © 2023, The Authors. All rights reserved.

关键词： Graphene

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Rupture stress of liquid metal nanoparticles and their applications in stretchable conductors and dielectrics

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npj Flexible Electronics 2021年第1期5卷 87-93页

作者： Yang Liu Xinyi Ji Jiajie Liang School of Materials Science and Engineering National Institute for Advanced MaterialsNankai UniversityTianjinPR China College of Light Industry Science and Engineering Tianjin University of Science and TechnologyTianjinPR China Key Laboratory of Functional Polymer Materials of Ministry of Education College of ChemistryNankai UniversityTianjinPR China Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry and Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) Nankai UniversityTianjinPR China

Few works had systematically investigated the relationship between the rupture stress of the oxide shell and the diameter of liquid metal nanoparticles(LMNPs).Here,we fabricated a series of elastomer/LMNPs composites,which were based on various polyurethanes with different shore hardness and LMNPs with different diameters,to systematically study the rupture stress of *** established a reliable and guidable relationship between the stress–strain curves of elastomers with different shore hardness and rupture stress of LMNPs with various diameters by both experiments and numerical *** on this guidance,we can facilely prepare stretchable conductors with remarkable stretchability and conductivity(i.e.,24,130 S·cm^(−1)at 500%strain)and stretchable dielectrics with excellent stretchability and permittivity(i.e.,dielectric constant of 76.8 with 580%strain)through controlling the shore hardness of elastomers and diameter of *** work will facilitate the systematic study of LMNPs and expand their use in stretchable electronics.

关键词： stress diameters rupture

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Effect of Bimodal Grain Structure on Corrosion Behavior and Tensile Properties of Low-Alloyed Mg-1bi-1zn-1ag Alloy

SSRN

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SSRN 2023年

作者： Zhang, Ming-Ya Li, Feng Guo, Zhen-Yu Wang, Hong-Xia Wang, Li-Fei Li, Hang Yu, Hui Cheng, Wei-Li School of Metallurgical Engineering Anhui University of Technology Ma'an shan243002 China School of Materials Science and Engineering Taiyuan University of Technology Taiyuan030024 China Key Laboratory of Interface Science and Engineering in Advanced Materials Ministry of Education Taiyuan University of Technology Taiyuan030024 China Hebei University of Technology College of Materials Science and Engineering Tianjin300132 China

A novel low-alloyed Mg-1Bi-1Zn-1Ag alloy system was developed and subjected to extrusion at a low extrusion ratio (BZQ111-R9) to achieve a bimodal grain structure. The dependence of the corrosion behavior and tensile properties on the grain structure was studied. The results showed that the BZQ111-R9 sample displayed a bimodal-grained microstructure. The dominant corrosion mode of the BZQ111-R9 sample was filiform with intergranular corrosion with a low corrosion rate of 0.06 mm/a. Furthermore, a greater balance between strength and ductility (TYS=207.1 MPa and EL=35.9%) was also realized in the BZQ111-R9 sample. Thus, we propose a novel approach for developing low-alloyed Mg-Bi-based alloys with excellent synergy between corrosion resistance and tensile properties based on bimodal grain structure control. © 2023, The Authors. All rights reserved.

关键词： Textures

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Advancing homogeneous networking principles for the development of fatigue-resistant,low-swelling and sprayable hydrogels for sealing wet,dynamic and concealed wounds in vivo

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Bioactive materials 2024年第4期34卷 150-163页

作者： Yi Zhang Yanjun Pan Ronghang Chang Kangli Chen Kun Wang Haoqi Tan Meng Yin Changsheng Liu Xue Qu Key Laboratory for Ultrafine Materials of Ministry of Education School of Material Science and EngineeringFrontiers Science Center for Materiobiology and Dynamic ChemistryEast China University of Science and TechnologyShanghai 200237China Department of Cardiothoracic Surgery Shanghai Children’s Medical CenterSchool of MedicineShanghai Jiao Tong University1678 Dong Fang RoadShanghai 200127China Suzhou Innovation Center of Shanghai University Shanghai UniversitySuzhou 215000JiangsuChina Wenzhou Institute of Shanghai University Wenzhou325000China Shanghai Frontier Science Center of Optogenetic Techniques for Cell Metabolism Shanghai 200237China

Effective sealing of wet,dynamic and concealed wounds remains a formidable challenge in clinical *** hydrogel sealants are promising due to their ability to cover a wide area rapidly,but they face limitations in dynamic and moist *** address this issue,we have employed the principle of a homogeneous network to design a sprayable hydrogel sealant with enhanced fatigue resistance and reduced *** network is formed by combining the spherical structure of lysozyme(LZM)with the orthotetrahedral structure of 4-arm-polyethylene glycol(4-arm-PEG).We have achieved exceptional sprayability by controlling the pH of the precursor *** homogeneous network,constructed through uniform cross-linking of amino groups in protein and 4-arm-PEG-NHS,provides the hydrogel with outstanding fatigue resistance,low swelling and sustained *** vitro testing demonstrated that it could endure 2000 cycles of underwater shearing,while in vivo experiments showed adhesion maintenance exceeding 24 ***,the hydrogel excelled in sealing leaks and promoting ulcer healing in models including porcine cardiac hemorrhage,lung air leakage and rat oral ulcers,surpassing commonly used clinical ***,our research presents an advanced biomaterial strategy with the potential to advance the clinical management of wet,dynamic and concealed wounds.

关键词： Sprayable hydrogel sealants Homogeneous network Fatigue-resistance Low swelling Wet dynamic and concealed wound

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