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Exploring the Nanomechanical Properties of a Coordination-bond Based Supramolecular Polymer

Chinese Journal of Polymer Science 2022年第12期40卷 1613-1622,I0008页

作者： Rui-Xiang Yao Jun-Juan Shi Ke-Huan Li Xin Liu hou-yu zhang Ming Wang Wen-Ke zhang State Key Laboratory of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchun 130012China Institute of Theoretical Chemistry College of ChemistryJilin UniversityChangchun 130012China

Due to their dynamic nature and strength tunability,metallo-supramolecular polymers have been introduced into various *** mechanical strength of the metallo-supramolecular polymers in the system directly influences the mechanical properties(e.g.,the toughness)of the ***,it is necessary to explore the mechanical behavior of the metallo-supramolecular ***,we present a single-molecule method to systematically explore the chain structure and mechanical properties of metallo-supramolecular polymer by using a loop protected ***,we found that the mechanical stability of the individual chain,which is determined by the strength of terpyridine-Fe^(2+) -terpyridine(tpy-Fe^(2+)-tpy)bonds,was about 0.6–1.0 nN,depending on the pulling *** value is around three times higher than those measured using old *** addition,the unique loop protected structure further reduces the interference of non-specific polymer-AFM tip(or polymer-substrate)interactions on the quantification of the actual strength and kinetic parameter of noncovalent interactions in supramolecular ***,the single chain flexibility of the metallo-supramolecular polymer was investigated and found to be comparable to the corresponding covalent *** findings provide a new way to explore the force response of supramolecular polymers composed of metal-ligand interactions and will be useful for the design of metallo-supramolecular polymer-based functional materials with tailored mechanical properties.

关键词： Supramolecular polymer Single-molecule force spectroscopy Coordination chemistry Polymer mechanochemistry

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Preparation and Magnetic Property of La_(0.7)Sr_(0.3)MnO_3 Nanorod by Combination Sol-Gel with Molten Salt

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Chemical Research in Chinese Universities 2008年第6期24卷 672-674页

作者： QI Shu-yan FENG Jing XU Xiao-dong WANG Jing-ping hou Xiang-yu zhang Mi-lin Key Laboratory of Superlight Materials ＆ Surface Technology of Ministry of Education Harbin Engineering University Harbin 150001 P. R. China

La0.7Sr0.3MnO3（LSMO） nanorods were synthesized by a method combining sol-gel with molten salts at 950 ℃ for 10 h, which employed KCl＋NaCl（mass ratio 4：1） as eutectic molten salts. The morphologies and magnetic properties of the resulting LSMO nanorods were investigated by X-ray diffraction（XRD）, scanning electron microscopy（SEM）, transmission electron microscopy（TEM）, and vibrating sample magnetometer（VSM） measurements. It was found that the obtained perovskite manganite LSMO was a uniform nanorod with a diameter of about 50 nm and a length of longer than 500 rim. The Curie temperature（To） of the LSMO nanorod used here was 262 K, much lower than that of bulky single crystal LSMO（360 K）. The low Curie temperature might be a result of the great disorder near the grain boundary, which could be observed clearly from the TEM picture.

关键词： Molten salt synthesis Sol-gel processes Perovskite Nanostructured materials

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Dynamic evolution of Co species and morphological reconstruction on Co-N-C during the nitrate reduction reaction in neutral solution

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Nano Research 2025年第1期18卷 164-172页

作者： yuanlin Fu Xiaoting Yang Ya yu Kang Zhou Xiaoyang Ye Aoxiang zhang Xiaojiao hou Bingbing Chen Fuqiang Fan yuhang Li yu Fu Department of Chemistry College of SciencesNortheastern UniversityShenyang 110819China Department of Physical Education Shen Yang Institute of Science and TechnologyShenyang 110167China Sungrow Power Supply Co. Ltd.Hefei 230088China

The electrochemical nitrate reduction reaction(eNO_(3)^(-)RR)is considered an effective approach for converting nitrate-containing wastewater to *** adsorption and activation of NO_(3)^(-)is the critical step for many materials and the high energy barrier inhibits the continuation of the reduction *** Co nanoparticles encapsulated in the carbon layer we prepared spontaneously react with NO_(3)^(-)and the resulting Co^(2+)is then reduced by electroreduction to Co^(0),which circulates *** resulted in overcoming the energy input required for NO_(3)^(-)adsorption and conversion,thereby increasing the catalytic *** the same time,the morphology of the catalyst reconstructed from a dodecahedron to an interwoven nanosheet structure and the increased surface area also gives it better *** obtained Co(OH)_(2)@Co-N-C has an excellent eNO_(3)^(-)RR of 2774.7μg·h^(-1)·cm^(-2)with a Faraday efficiency of 81.4%in neutral *** the same time,the material-modified electrode can run stably for more than 100 *** work provides a new idea for the design of Co-based catalysts for eNO_(3)^(-)RR.

关键词： electrochemical nitrate reduction reaction Co-based catalyst dynamic evolution of Co species morphological reconstruction

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搅拌摩擦焊接Al-Mg-(Zn)合金的腐蚀行为（英文）

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稀有金属材料与工程 2017年第9期46卷 2437-2444页

作者：侯陇刚于佳佳张迪庄林忠周利张济山北京科技大学新金属材料国家重点实验室北京100083 塔塔钢铁哈尔滨工业大学(威海)山东省特种焊接技术重点实验室山东威海264209

研究了搅拌摩擦焊接含Zn Al-Mg合金的腐蚀行为及焊后热处理对搅拌摩擦焊接合金腐蚀行为的影响。结果表明,经焊后热处理后不同焊接区的最大腐蚀深度和主导腐蚀模式随Zn含量增加而发生明显变化。Zn的加入使主导腐蚀模式由晶间腐蚀变为点... 详细信息

研究了搅拌摩擦焊接含Zn Al-Mg合金的腐蚀行为及焊后热处理对搅拌摩擦焊接合金腐蚀行为的影响。结果表明,经焊后热处理后不同焊接区的最大腐蚀深度和主导腐蚀模式随Zn含量增加而发生明显变化。Zn的加入使主导腐蚀模式由晶间腐蚀变为点蚀。与加工硬化态合金相比,时效硬化态合金具有严重的电偶腐蚀倾向。对于析出强化Al-Mg-Zn合金而言,这在很大程度上与不连续分布的晶界析出相及丰富的晶内析出相的形成密切相关,而对无Zn的Al-Mg合金,则与连续分布的晶界β-AlMg相相关。

关键词：铝合金搅拌摩擦焊接晶间腐蚀析出组织

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Co/Co_(7)Fe_(3)heterostructures with controllable alloying degree on carbon spheres as bifunctional electrocatalyst forrechargeable zinc-air batteries

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 476-487页

作者： Junkang Chen Yongyue Zhuang Yanxin Qiao yu zhang Aihua yuan Hu Zhou School of Materials Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China

Exploring efficient and nonprecious metal electrocatalysts of oxygen reduction reaction(ORR)and oxygen evolution reaction(OER)is crucial for developing rechargeable zinc-air batteries(ZABs).Herein,an alloying-degree control strategy was employed to fabricate nitrogen-doped carbon sphere(NCS)decorated with dual-phase Co/Co_(7)Fe_(3)heterojunctions(CoFe@NCS).The phase composition of materials has been adjusted by controlling the alloying *** optimal CoFe_(0.08)@NCS electrocatalyst displays a half-wave potential of 0.80 V for ORR and an overpotential of 283 mV at 10 mA·cm^(-2)for OER in an alkaline *** intriguing bifunctional electrocatalytic activity and durability is attributed to the hierarchically porous structure and interfacial electron coupling of highly-active Co_(7)Fe_(3)alloy and metallic Co *** the CoFe_(0.08)@NCS material is used as air-cathode catalyst of rechargeable liquid-state zinc-air battery(ZAB),the device shows a high peak power-density(157 mW·cm^(-2))and maintains a stable voltage gap over 150 h,outperforming those of the benchmark(Pt/C+RuO_(2))-based *** particular,the as-fabricated solid-state flexible ZAB delivers a reliable compatibility under different bending *** work provides a promising strategy to develop metal/alloy-based electrocatalysts for the application in renewable energy conversion technologies.

关键词： bifunctional electrocatalysts oxygen reduction reaction oxygen evolution reaction zinc-air battery metal/alloy carbon sphere

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THE RESEARCH OF MIXED PRODUCT LINES OF MATERIAL DELIVERING SYSTEM DRAWN BY ORDERS

THE RESEARCH OF MIXED PRODUCT LINES OF MATERIAL DELIVERING S...

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2005年中国机械工程学会年会

作者： hou Kaihu, yu Kaichao, zhang yu (Dep. of Industry and Engineering, Faculty of mechanical and Electrical Engineering, Kunming University of Science and Technology, Kunming, 650093, China)

＜正＞To deal with mode of production small lot size and more varieties, the system of mixed production lines of material delivering system drawn by order was discussed. Firstly, the model of mixed production lines of material delivering system drawn by orders was build. Secondly, the logic of processing of the model was studied. To realize delivering components to production line in JIT＆PDT, three disposing ways were presented. Thirdly, Disposing flow of this system models were analyzed. Finally, The physical structure and function of the system was put forward.

关键词： delivering material system mixed product lines information technology

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Viscosity and structure relationship with equimolar substitution of CaO with MgO in the CaO–MgO–Al_(2)O_(3)–SiO_(2)slag melts

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 70-79页

作者： Yong hou Shuo zhang Jie Dang Jia Guo Hanghang Zhou Xuewei Lü College of Materials Science and Engineering Chongqing UniversityChongqing 400044China Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and New Materials Chongqing UniversityChongqing 400044China

Currently,the Al_(2)O_(3)content in the high-alumina slag systems within blast furnaces is generally limited to 16wt%–18.5wt%,making it challenging to overcome this *** most studies that concentrated on managing the MgO/Al_(2)O_(3)ratio or basicity,this paper explored the effect of equimolar substitution of MgO for CaO on the viscosity and structure of a high-alumina CaO-MgO-Al_(2)O_(3)-SiO_(2)slag system,providing theoretical guidance and data to facilitate the application of high-alumina *** results revealed that the viscosity first decreased and then increased with higher MgO substitution,reaching a minimum at 15mol%MgO *** transform infrared spectroscopy(FTIR)results found that the depths of the troughs representing[SiO_(4)]tetrahedra,[AlO_(4)]tetrahedra,and Si-O-Al bending became progressively deeper with increased MgO *** of the Raman spectra showed that the average number of bridging oxygens per Si atom and the X_(Q^(3))/X_(Q^(2))(X_(Q^(i))is the molar fraction of Q^(i) unit,and i is the number of bridging oxygens in a[SiO_(4)]tetrahedral unit)ratio increased from 2.30 and 1.02 to 2.52 and 2.14,respectively,indicating a progressive polymerization of the silicate structure.X-ray photoelectron spectroscopy(XPS)results highlighted that non-bridging oxygen content decreased from 77.97mol% to 63.41mol% with increasing MgO concentration,whereas bridging oxygen and free oxygen contents *** analysis demonstrated a gradual increase in the polymerization degree of the tetrahedral structure with the increase in MgO ***,bond strength is another important factor affecting the slag *** occurrence of a viscosity minimum can be attributed to the complex evolution of bond strengths of non-bridging oxygens generated during depolymerization of the[SiO_(4)]and[AlO_(4)]tetrahedral structures by CaO and MgO.

关键词： aluminosilicate viscosity structure spectroscopy

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天然气液化装置制冷方法探讨

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天然气工业 2005年第10期25卷 120-123页

作者：赵红利侯予张敏陈纯正西安交通大学制冷与低温工程研究所

回顾了国内外几种比较成熟的天然气液化装置中采用的制冷方法(复叠式制冷循环、混合制冷剂循环、膨胀制冷循环等)以及该领域最新的研究进展,并对其进行了分析比较。在此基础上介绍了一种新式液化天然气的制冷方法——吸收制冷循环。该... 详细信息

回顾了国内外几种比较成熟的天然气液化装置中采用的制冷方法(复叠式制冷循环、混合制冷剂循环、膨胀制冷循环等)以及该领域最新的研究进展,并对其进行了分析比较。在此基础上介绍了一种新式液化天然气的制冷方法——吸收制冷循环。该方法利用溶液浓度的变化来获取冷量,即制冷剂在一定压力下蒸发吸热,再利用吸收剂吸收冷剂蒸气,这种循环系统不仅适用于海上天然气液化装置,同时也适合于太阳能、地热能丰富的地区,既可降低产品成本又可实现废物利用。最后,还针对液化天然气运输、储存过程蒸气的产生,介绍了几种运输及储存装置中辅助制冷方法G-M制冷机和Stirling制冷机、相变制冷、脉管制冷机。

关键词：天然气液化制冷方法装置液化天然气储存液化天然气管道蒸气辅助制冷吸收制冷循环液化天然气

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Loss-of-function mutations of microRNA-142-3p promote ASH1L expression to induce immune evasion and hepatocellular carcinoma progression

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World Journal of Gastroenterology 2025年第1期31卷 126-145页

作者： Xing-Hui yu Yan Xie Jian yu Kun-Ning zhang Zhou-Bo Guo Di Wang Zhao-Xian Li Wei-Qi zhang yu-Ying Tan Li zhang Wen-Tao Jiang School of Medicine Nankai UniversityTianjin 300192China Tianjin Key Laboratory of Molecular Diagnosis and Treatment of Liver Cancer Tianjin First Center HospitalTianjin 300192China Department of Liver Transplantation Tianjin First Center HospitalTianjin 300192China First Central Clinical School Tianjin Medical UniversityTianjin 300192China

BACKGROUND Hepatocellular carcinoma(HCC)has been a pervasive malignancy throughout the world with elevated *** therapeutic targets are beneficial to treat and predict the ***,the exact molecular mechanisms leading to the progression of HCC are still *** has shown that the microRNA-142-3p level decreases in HCC,whereas bioinformatics analysis of the cancer genome atlas database shows the ASH1L expression increased among liver tumor *** this paper,we will explore the effects and mechanisms of microRNA-142-3p and ASH1L affect the prognosis of HCC patients and HCC cell bioactivity,and the association between *** To investigate the effects and mechanisms of microRNA-142-3p and ASH1L on the HCC cell bioactivity and prognosis of HCC *** In this study,we grouped HCC patients according to their immunohistochemistry results of ASH1L with pathological tissues,and retrospectively analyzed the prognosis of HCC ***,explored the roles and mechanisms of microRNA-142-3p and ASH1L by cellular and animal experiments,which involved the following experimental methods:Immunohistochemical staining,western blot,quantitative real-time-polymerase chain reaction,flow cytometric analysis,tumor xenografts in nude mice,*** statistical methods involved in this study contained t-test,one-way analysis of variance,theχ^(2)test,the Kaplan-Meier approach and the log-rank *** In this study,we found that HCC patients with high expression of ASH1L possess a more recurrence rate as well as a decreased overall survival ***1L promotes the tumorigenicity of HCC and microRNA-142-3p exhibits reduced expression in HCC tissues and interacts with ASH1L through targeting the ASH1L 3′untranslated ***,microRNA-142-3p promotes apoptosis and inhibits proliferation,invasion,and migration of HCC cell lines in vitro via *** the exploration mechanism,we found ASH1L may promote an immunosuppressive mi

关键词： Hepatocellular carcinoma MicroRNA-142-3p ASH1L Immune evasion Tumor immune microenvironment Apoptosis

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Fluorinated poly(p-triphenylene isatin) anion exchange membranes based on hydrophilic hydroxyl side chain modulation for fuel cells

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Journal of Energy Chemistry 2025年第1期100卷 702-709页

作者： Yiman Gu Yanchao zhang Zhanyu Li Yijia Lei Baozeng Sun Xiaoyu yu Zhe Wang College of Chemistry and Life Science Changchun University of Technology College of Chemical Engineering Changchun University of Technology School of Materials Science and Engineering Changchun University of Technology Key Laboratory of Advanced Functional Polymer Membrane Materials of Jilin Province

The development of alkaline fuel cells is moving forward at an accelerated pace,and the application of ether-free bonded polymers to anion exchange membranes （AEMs） has been widely ***,the question of the“trade-off”between AEM ionic conductivity and dimensional stability remains *** strategy of inducing microphase separation to improve the performance of AEM has attracted much attention recently,but the design of optimal molecular structures is still being ***,this work introduced different ratios of 3-bromo-1,1,1-trifluoroacetone （x=40,50,and 60） into the main chain of poly（p-terphenylene isatin）.Because fluorinated groups have excellent hydrophobicity,hydrophilic hydroxyl-containing side chains are introduced to jointly adjust the formation of phase separation *** results show that PTI-PTF50-NOH AEM with the appropriate fluorinated group ratio has the best ionic conductivity and alkali stability under the combined effect of *** has an ionic conductivity of 133.83 mS cm-1at 80°*** addition,the OH-conductivity remains at 89%of the initial value at 80°C and 3 M KOH for 1056 h of *** cell polarization curve based on PTI-PTF50-NOH shows a power density of 734.76 mW cm-2at a current density of 1807.7 mA cm-2.

关键词： Anion exchange membranes Poly(p-terphenylene isatin) Hydrophilic-hydrophobic phase separation Fluorinated group

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