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硼掺杂石墨烯气凝胶的制备及在超级电容器中电化学性能研究

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炭素技术 2019年第4期38卷 23-27页

作者：任帅容萍于琦姜立运李亚鹏陕西理工大学材料科学与工程学院陕西省催化基础与应用重点实验室石墨烯研究所陕西汉中723001 陕西理工大学物理与电信工程学院陕西汉中723001

以氧化石墨烯(GO)为碳源,以硼酸为硼源,利用简单的一步水热合成法制备了稳定高性能的硼掺杂石墨烯气凝胶(BGA)。通过X射线衍射仪(XRD)、扫描电子显微镜(SEM)、红外光谱(FT-IR)、热重分析(TGA)等技术手段表征了B-GA的表面形貌和化学状态... 详细信息

以氧化石墨烯(GO)为碳源,以硼酸为硼源,利用简单的一步水热合成法制备了稳定高性能的硼掺杂石墨烯气凝胶(BGA)。通过X射线衍射仪(XRD)、扫描电子显微镜(SEM)、红外光谱(FT-IR)、热重分析(TGA)等技术手段表征了B-GA的表面形貌和化学状态,并且在三电极体系下测试了B-GA的电化学性能。实验结果显示,通过水热法成功地将硼元素掺入石墨烯的晶格内并使其表现出优异的热稳定性。B-GA在1 A/g的电流密度下的比电容高达267.1 F/g,这证实了B-GA作为超级电容器电极材料在储能领域的应用潜力。

关键词：石墨烯硼掺杂水热法超级电容器

酶促聚合与ATRP结合合成聚己内酯和聚N,N-二甲氨基甲基丙烯酸乙酯嵌段共聚物及其自组装

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高等学校化学学报 2010年第12期31卷 2521-2524页

作者：刘林林王书唯李亚鹏撒宗朋祝明潘斯杨艳明吉林大学麦克德尔米德实验室长春130012 吉林大学第二医院长春130041

利用酶促开环聚合(eROP)与原子转移自由基聚合(ATRP)结合的方法合成了聚己内酯和聚N,N-二甲氨基甲基丙烯酸乙酯双亲嵌段共聚物(PCL-b-PDMAEMA).共聚物的结构通过凝胶渗透色谱、核磁共振以及红外光谱表征.利用动态光散射(DLS)法研究了双... 详细信息

利用酶促开环聚合(eROP)与原子转移自由基聚合(ATRP)结合的方法合成了聚己内酯和聚N,N-二甲氨基甲基丙烯酸乙酯双亲嵌段共聚物(PCL-b-PDMAEMA).共聚物的结构通过凝胶渗透色谱、核磁共振以及红外光谱表征.利用动态光散射(DLS)法研究了双亲嵌段共聚物在水溶液中的自组装行为,初步探讨了双亲嵌段共聚物的温度和pH响应性能.

关键词：酶促聚合原子转移自由基聚合双亲性嵌段共聚物溶液性质

Maintaining moderate levels of hypochlorous acid promotes neural stem cell proliferation and differentiation in the recovery phase of stroke

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Neural Regeneration Research 2025年第3期20卷 845-857页

作者： lin-yan Huang Yi-De Zhang Jie Chen Hai-Di Fan Wan Wang Bin Wang Ju-Yun Ma peng-peng li Hai-Wei Pu Xin-Yian Guo Jian-Gang Shen Su-Hua Qi School of Medical Technology Xuzhou Key Laboratory of Laboratory DiagnosticsXuzhou Medical UniversityXuzhouJiangsu ProvinceChina School of Pharmacy Xuzhou Medical UniversityXuzhouJiangsu ProvinceChina Department of Laboratory Medicine Branch Hospital of Huai’an First People’s HospitalHuai’anJiangsu ProvinceChina Department of Laboratory Medicine the Affiliated Hospital of Xuzhou Medical UniversityXuzhouJiangsu ProvinceChina School of Chinese Medicine The University of Hong KongHong Kong Special Administrative RegionChina

It has been shown clinically that continuous removal of ischemia/reperfusion-induced reactive oxygen species is not conducive to the recovery of late ***,previous studies have shown that excessive increases in hypochlorous acid after stroke can cause severe damage to brain *** previous studies have found that a small amount of hypochlorous acid still exists in the later stage of stroke,but its specific role and mechanism are currently *** simulate stroke in vivo,a middle cerebral artery occlusion rat model was established,with an oxygen-glucose deprivation/reoxygenation model established in vitro to mimic *** found that in the early stage(within 24 hours)of ischemic stroke,neutrophils produced a large amount of hypochlorous acid,while in the recovery phase(10 days after stroke),microglia were activated and produced a small amount of hypochlorous ***,in acute stroke in rats,hypochlorous acid production was prevented using a hypochlorous acid scavenger,taurine,or myeloperoxidase inhibitor,4-aminobenzoic acid *** results showed that high levels of hypochlorous acid(200μM)induced neuronal apoptosis after oxygen/glucose deprivation/***,in the recovery phase of the middle cerebral artery occlusion model,a moderate level of hypochlorous acid promoted the proliferation and differentiation of neural stem cells into neurons and *** suggests that hypochlorous acid plays different roles at different phases of cerebral ischemia/reperfusion *** levels of hypochlorous acid(5 and 100μM)promoted nuclear translocation ofβ-*** transfection of single-site mutation plasmids,we found that hypochlorous acid induced chlorination of theβ-catenin tyrosine 30 residue,which promoted nuclear ***,our study indicates that maintaining low levels of hypochlorous acid plays a key role in the recovery of neurological function.

关键词： cell differentiation cerebral ischemia/reperfusion injury chlorination hypochlorous acid microglia neural stem cell neurogenesis nuclear translocation stroke β-catenin

Effect of order–disorder transition on thermodynamic and electronic properties of σ and χ phases in W–Re alloy: the first-principles calculation

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Tungsten 2025年第1期7卷 195-213页

作者： Zhi-peng Zhu Dian Jia William Yi Wang Jun-Lei Yin Xing-Yu Gao Shu-Feng yang Hai-Feng Song Jin-Shan li State Key Laboratory of Solidification Processing Northwestern Polytechnical University Laboratory of Computational Physics Institute of Applied Physics and Computational Mathematics School of Metallurgical and Ecological Engineering University of Science and Technology Beijing

The Tungsten-Rhenium(W-Re) alloys,celebrated for their high melting point,strength at elevated temperatures,electrical resistivity,and radiation resistance,have been widely utilized in high-temperature components,aerospace,electronics,and nuclear *** constituents of the topologically close-packed(TCP) phases,the sigma phase(σ) and chi phase(χ) formed within W-Re alloys wield considerable influence on the mechanical properties and the stability of the *** calculations were utilized in the present work to explore the structural,thermodynamic,and electronic properties of both ordered and disordered configurations within the σ and χ phases,culminating in a systematic elucidation of the higher phase stability exhibited by the ordered *** is found that the bulk modulus of these two phases is directly proportional to the concentration of Re in the alloy,while the equilibrium volume is inversely *** thermodynamic parameters of the σ and χ phases are calculated via the mean-field potential *** similar trends observed in the isobaric heat capacity,enthalpy increment,and entropy change curves for these two phases suggest they possess comparable thermodynamic *** is noteworthy that the contribution of ionic vibrations predominantly affects the isobaric heat capacity,while the contribution of thermal electronic excitations increases linearly with *** the structure and thermodynamic properties of TCP phases in W-Re alloys at low temperatures has profound significance for optimizing material performance,microstructures features,establishing theoretical foundations,and predicting material behavior.

关键词： First-principles calculations Phase stability TCP phases Thermodynamic properties W–Re alloy

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汽车发动机曲轴机械加工技术分析

内燃机与配件 2021年第22期 100-101页

作者：李亚鹏苏亚辉郑州工业应用技术学院新郑451100

我国企业生产制造领域为了满足人们对于汽车的需求,对汽车发动机曲轴机械加工质量提高了重视程度,由于汽车发动机曲轴质量关系到汽车性能,所以在生产制造的过程中,要想满足汽车发动机动力需求,就必须要对汽车发动机曲轴机械加工质量严... 详细信息

我国企业生产制造领域为了满足人们对于汽车的需求,对汽车发动机曲轴机械加工质量提高了重视程度,由于汽车发动机曲轴质量关系到汽车性能,所以在生产制造的过程中,要想满足汽车发动机动力需求,就必须要对汽车发动机曲轴机械加工质量严格控制,达到人们对汽车的动力需求。

关键词：汽车发动机曲轴机械加工技术

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汽车翼子板抗凹刚度有限元分析

内燃机与配件 2021年第22期 60-61页

作者：苏亚辉李亚鹏郑州工业应用技术学院新郑451150

文章利用HyperMesh作为前处理软件,对某车型翼子板进行网格划分和属性定义,模拟载荷的加载与卸载,对翼子板的结构进行优化以满足翼子板屈曲抗凹性能需求,为汽车翼子板屈曲抗凹性能提升提供了优化方法和依据。

关键词：翼子板屈曲抗凹约束条件载荷位移

Deciphering the role of ultra-low-loaded rhodium in NiFe-MIL-53 for superior oxygen evolution reaction

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Journal of Energy Chemistry 2025年第1期100卷 77-86页

作者： Jinzhi Jia Jinhua Zhang Kailu Guo Lanyue Zhang Gening Du Hao You Junfeng Huang Mudong Tu Hua li Yong peng Wei Dou Cailing Xu State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering School of Materials and Energy Lanzhou University College of Chemistry and Chemical Engineering Luoyang Normal University

Designing highly active and stable electrocatalysts of oxygen evolution reaction （OER） is one of the crucial *** this study,a novel OER electrocatalyst,NiFe-MIL-53 modified with ultra-low rhodium（Rh@NiFe-MIL-53）,is successfully prepared via the hydrothermal ***-situ Raman spectroscopy and electrochemical impedance spectroscopy reveal that the doped Rh accelerates the phase transformation of NiFe-MIL-53 and the in-situ formed Rh@NiFeOOH is the actual active *** importantly,the enhanced reversibility of electrochemical reconstruction between NiFeOOH and NiFe（OH）2after doping Rh is beneficial for improving the electrochemical stability of the catalyst.X-ray photoelectron spectroscopy spectra show the strong electronic interaction between single-atom Rh and Ni/Fe in Rh@***,theoretical calculations confirm that the integration of single-atom Rh into the NiFeOOH successfully reduces the band gap,regulates the d-band center （εd）,accelerates the charge transfer,and optimizes the adsorption behavior of oxygen-containing intermediates,thereby lowering the energy barrier of rate-determining ***,the optimized Rh@NiFe-MIL-53 exhibits excellent OER activity （240 mV） with a small Tafel slope of 48.2 mV dec-1and long-term durability (over1270 h at 10 m A cm-2and 110 h at 200 mA cm-2).This work presents a new perspective on designing highly efficient OER electrocatalysts.

关键词： X ray photoelectron spectroscopy

赵庄矿软煤层大采高煤壁片帮主要影响因素研究

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煤炭技术 2014年第4期33卷 153-155页

作者：刘臻保张百胜李亚鹏太原理工大学矿业工程学院太原030024

针对赵庄矿复杂地质条件下软煤层大采高工作面煤壁片帮严重的问题,通过对比3个盘区不同工作面煤壁片帮情况,对片帮机理和影响煤壁片帮的主要因素进行综合分析。找到工作面煤壁片帮的主要自然因素为3#煤层松软,节理裂隙发育,加之地质构... 详细信息

针对赵庄矿复杂地质条件下软煤层大采高工作面煤壁片帮严重的问题,通过对比3个盘区不同工作面煤壁片帮情况,对片帮机理和影响煤壁片帮的主要因素进行综合分析。找到工作面煤壁片帮的主要自然因素为3#煤层松软,节理裂隙发育,加之地质构造复杂,受岩层产状影响工作面倾斜仰采区域较多。支架初撑力、采高和工作面推进速度是影响工作面煤壁片帮的主要生产技术因素。对上述原因,提出了相关改进措施,确保了煤矿安全生产。

关键词：复杂地质条件软煤层煤壁片帮防治措施

Atmospheric reductive catalytic fractionation of lignocellulose integrated with one-pot catalytic conversion of carbohydrate yielding valuable lignin monomers and platform chemicals from corn straw

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Green Energy & Environment 2025年第1期10卷 161-172页

作者： Meng-Ying liu Zhe-Hui Zhang Xue-Qi Wang Qian Sun Chen Zhang Yu li Zhuohua Sun Katalin Barta Feng peng Tong-Qi Yuan State Key Laboratory of Efficient Production of Forest Resources Beijing Forestry UniversityBeijing100083China Beijing Key Laboratory of lignocellulosic Chemistry Beijing Forestry UniversityBeijing100083China Department of Chemistry Organic and Bioorganic ChemistryUniversity of GrazHeinrichstrasse 28/II8010 GrazAustria

Developing a cost-effective and environmentally friendly process for the production of valuable chemicals from abundant herbal biomass receives great attentions in recent ***,taking advantage of the“lignin first”strategy,corn straw is converted to valuable chemicals including lignin monomers,furfural and 5-methoxymethylfurfural via a two steps *** key of this research lies in the development of a green and low-cost catalytic process utilizing magnetic Raney Ni catalyst and high boiling point ethylene *** utilization of neat ethylene glycol as the sole slovent under atmospheric conditions obviates the need for additional additives,thereby facilitating the entire process to be conducted in glass flasks and rendering it highly convenient for scaling *** the initial step,depolymerization of corn straw lignin resulted in a monomer yield of 18.1 wt%.Subsequently,in a dimethyl carbonate system,the carbohydrate component underwent complete conversion in a one-pot process,yielding furfural and 5-methoxymethylfurfural as the primary products with an impressive yield of 47.7%.

关键词： Atmospheric reductive catalytic fractionation Corn straw Ethylene glycol Raney Ni 5-Methoxymethylfurfural