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Chemical Research in Chinese Universities 2005年第4期21卷 480-483页

作者： ZHANGZhi-chao lüzhe QIANXu-hong SHENGHui StateKeylaboratoryofFineChemicals DalianUniversityofTechnologyDalian116012P.R.China TheFirstClinicalHospital JilinUniversityChangchun130021P.R.China

The photocleavage abilities of a novel family of compounds, 8-oxo-8%H%-acenaphtho pyrrole-9-carbonitrile and its derivatives(compounds 1—5) were evaluated with M13 mp18 single strand circular DNA. Only compound 1 with a diethylamine group could bind to DNA %via% electrostatic attraction and intercalation. At a concentration of 50 μmol/l, it could generate singlet oxygen to cleave circular DNA into linear DNA under the irradiation of long wavelength light(λ>400 nm). The antitumor {ability} of compound 1 was also evaluated in vitro, and its IC_ 50 on Hela cells was as low as 6.8 μmol/l.

关键词： Photocleaver 8-Oxo-8H-acenaphtho[1,2-b]pyrrole-9-carbonitrile Singlet oxygen Cytotoxicity

Boosting oxygen reduction activity and CO_(2) resistance on bismuth ferrite-based perovskite cathode for low-temperature solid oxide fuel cells below 600℃

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Journal of Energy Chemistry 2024年第3期90卷 600-609,I0013页

作者： Juntao Gao Zhiyun Wei Mengke Yuan zhe Wang zhe lü Qiang li lingling Xu Bo Wei School of Physics Harbin Institute of TechnologyHarbin 150001HeilongjiangChina Key laboratory of Functional Inorganic Material Chemistry Ministry of EducationSchool of Chemistry and Materials ScienceHeilongjiang UniversityHarbin 150080HeilongjiangChina School of Physics and Electronic Engineering Harbin Normal UniversityHarbin 150025HeilongjiangChina

Developing efficient and stable cathodes for low-temperature solid oxide fuel cells(lT-SOFCs) is of great importance for the practical ***,we propose a series of Sm-modified Bi_(0.7-x)Sm_xSr_(0.3)FeO_(3-δ) perovskites as highly-active catalysts for *** doping can significantly enhance the electrocata lytic activity and chemical stability of *** 600℃,Bi_(0.675)Sm_(0.025)Sr_(0.3)FeO_(3-δ)(BSSF25) cathode has been found to be the optimum composition with a polarization resistance of 0.098 Ω cm^2,which is only around 22.8% of Bi_(0.7)Sr_(0.3)FeO_(3-δ)(BSF).A full cell utilizing BSSF25 displays an exceptional output density of 790 mW cm^(-2),which can operate continuously over100 h without obvious *** remarkable electrochemical performance observed can be attributed to the improved O_(2) transport kinetics,superior surface oxygen adsorption capacity,as well as O_(2)p band centers in close proximity to the Fermi ***,larger average bonding energy(ABE) and the presence of highly acidic Bi,Sm,and Fe ions restrict the adsorption of CO_(2) on the cathode surface,resulting in excellent CO_(2) *** work provides valuable guidance for systematic design of efficient and durable catalysts for lT-SOFCs.

关键词： low-temperature solid oxide fuel cell Perovskite cathode DFT calculations CO_(2) tolerance

Novel medium entropy perovskite oxide Sr(FeCoNiMo)_(1/4)O_(3−δ)for zinc-air battery cathode

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Journal of Energy Chemistry 2024年第9期96卷 669-678页

作者： Kaixin li Juntao Gao Xu Han Qi Shao zhe lü School of Physics Harbin Institute of TechnologyHarbin 150001HeilongjiangChina Heilongjiang Provincial Key laboratory of Advanced Quantum Functional Materials and Sensor Components Harbin 150001HeilongjiangChina

It is widely recognized that the development of ZABs is impeded by the kinetic bottleneck of oxygen evolution reaction(OER)and oxygen reduction reaction(ORR).The application of conformational entropy strategy to oxides often involves introducing multiple elements with different properties,thereby providing outstanding bifunctional catalytic activity for OER/***,the possible underlying catalytic pathways and potential interactions between various components are still poorly *** paper presents an excellent medium-entropy perovskite oxide,Sr(FeCoNiMo)_(1/4)O_(3−δ)(lower overpotential of 301 mV at 10 mA cm^(−2)).Zinc-air batteries employing it as a cathode catalyst demonstrate excellent round-trip efficiency(62%).By combining theoretical calculation with experiments,we aim to establish the link between the electronic structure of perovskite oxides with different elemental compositions and their OER *** reveals that the conformational entropy strategy can simultaneously shift the O 2p-band center and metal d-band center of perovskite oxide towards the vicinity of the Fermi energy level,thereby triggering a more favorable lattice oxygen-participated mechanism(lOM)during the OER *** outcomes of this work provide crucial insights into the role of conformational entropy strategies in oxygen catalysis and offer potential avenues for constructing efficient and stable electrocatalysts.

关键词： Sr(FeCoNiMo)_(1/4)O_(3−δ) Bifunctional catalyst Medium entropy lOM Rechargeable zinc-air batteries

Electrochemical performance of la_(2)NiO_(4+δ)-Ce_(0.55)la_(0.45)O_(2−δ)as a promising bifunctional oxygen electrode for reversible solid oxide cells

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Journal of Advanced Ceramics 2021年第2期10卷 328-337页

作者： Pengzhang li Wei Yang Chuanjin Tian Wenyan Zhao zhe lü Zhipeng Xie Chang-An Wang School of Materials Science and Engineering Jingdezhen Ceramic InstituteJingdezhen333403China School of Physics Harbin Institute of TechnologyHarbin150001China State Key laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing100084China

In this work,la_(2)NiO_(4+δ)-Ce_(0.55)la_(0.45)O_(2−δ)(denoted as lNO-xlDC)with various lDC contents(x=0,10,20,30,and 40 wt%)were prepared and evaluated as bifunctional oxygen electrodes for reversible solid oxide cells(RSOCs).Compared with the pure lNO,the optimum composition of lNO-30lDC exhibited the lowest polarization resistance(Rp)of 0.53 and 0.12Ω·cm^(2)in air at 650 and 750℃,*** enhanced electrochemical performance of lNO-30lDC oxygen electrode was mainly attributed to the extended triple phase boundary and more oxygen ionic transfer *** hydrogen electrode supported single cell with lNO-30lDC oxygen electrode displayed peak power densities of 276,401,and 521 mW·cm^(−2)at 700,750,and 800℃,***,the electrolysis current density of the single cell demonstrated 526.39 mA·cm^(−2) under 1.5 V at 800℃,and the corresponding hydrogen production rate was 220.03 ml·cm^(−2)·h^(−1).The encouraging results indicated that lNO-30lDC was a promising bifunctional oxygen electrode material for RSOCs.

关键词： la_(2)NiO_(4+δ)(lNO) oxygen electrode electrochemical performance reversible solid oxide cells(RSOCs)

基于暂态波形特征的输电线路雷击干扰与故障识别方法

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电力系统保护与控制 2020年第6期48卷 18-26页

作者：吕哲王增平新能源电力系统国家重点实验室(华北电力大学) 北京102206

随着大量电力电子装置应用于电网,暂态量保护的优势逐渐凸显。针对其易受雷击干扰影响的问题,在非雷击故障、雷击干扰和雷击故障下,对各相暂态电流附加分量进行了分析。得出故障与雷击干扰的本质差异为:故障暂态波形的整体变化趋势中具... 详细信息

随着大量电力电子装置应用于电网,暂态量保护的优势逐渐凸显。针对其易受雷击干扰影响的问题,在非雷击故障、雷击干扰和雷击故障下,对各相暂态电流附加分量进行了分析。得出故障与雷击干扰的本质差异为:故障暂态波形的整体变化趋势中具有明显的工频正弦特征。据此,采用平均值滑动去噪的方法可基本消除雷电流等高频影响,获得暂态电流的主波形。提出采用50 Hz正弦函数对主波进行拟合,基于拟合决定系数的大小可识别各相线故障。经PSCAD/EMTDC电磁暂态仿真,验证所提识别方案能正确识别各种类型下的雷击干扰与故障,不受故障初始角及过渡电阻的影响,适用于不同类型输电线路。

关键词：输电线路暂态量雷击干扰波形特征正弦拟合

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中温SOFC复合阴极材料的制备及性能

稀有金属材料与工程 2010年第5期39卷 915-918页

作者：荆波孙俊才吕喆大连海事大学辽宁大连116026 哈尔滨工业大学黑龙江哈尔滨150001

在la0.7Sr0.3Co0.95Cu0.05O3-δ中掺入不同比例的Ce0.8Sm0.2O1.9制成中温固体氧化物燃料电池(IT-SOFC)复合阴极材料,对其进行晶体结构表征和高温电导率、热膨胀系数和阴极过电位测试。结果表明,Ce0.8Sm0.2O1.9的掺入不但有效地降低了la0... 详细信息

在la0.7Sr0.3Co0.95Cu0.05O3-δ中掺入不同比例的Ce0.8Sm0.2O1.9制成中温固体氧化物燃料电池(IT-SOFC)复合阴极材料,对其进行晶体结构表征和高温电导率、热膨胀系数和阴极过电位测试。结果表明,Ce0.8Sm0.2O1.9的掺入不但有效地降低了la0.7Sr0.3Co0.95Cu0.05O3-δ阴极材料的热膨胀系数,而且Ce0.8Sm0.2O1.9掺入量为10%(质量分数,下同)的样品,其电导率高于la0.7Sr0.3Co0.95Cu0.05O3-δ,并且它在相同过电位下其阴极电流密度也大于其他样品。以其为阴极的SOFC单电池,在850℃最大短路电流密度达511mA/cm2,最大输出功率密度为106mW/cm2。

关键词：中温固体氧化物燃料电池复合阴极材料 la0.7Sr0.3Co0.95Cu0.05O3-δ Ce0.8Sm0.2O1.9

Rock fracture mechanism of buffer blasting with cushion layer at the borehole bottom

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 325-334页

作者： Xinguang Zhu Chenxi Ding zhe Sui Hong Su Xu Guo School of Civil and Resources Engineering University of Science and Technology BeijingBeijing 100083China Key laboratory for Mechanics in Fluid Solid Coupling Systems Institute of MechanicsChinese Academy of SciencesBeijing 100190China School of Mechanics and Civil Engineering China University of Mining and Technology(Beijing)Beijing 100083China School of Chemical and Blasting Engineering Anhui University of Science and TechnologyHuainan 232001China

This study primarily investigates the rock fracture mechanism of bottom cushion layer blasting and explores the effects of the bottom cushion layer on rock *** involves analyses of the evolution patterns of blasting stress,characteristics of crack distribution,and rock fracture features in the ***,blasting model experiments were carried out using the dynamic caustics principle to investigate the influence of bottom cushion layers and initiation methods on the integrity of the bottom rock *** experimental results indicate that the combined use of bottom cushion layers and inverse initiation effectively protects the integrity of the bottom rock ***,the process of stress wave propagation and dynamic crack propagation in rocks was simulated using the continuum-discontinuum element method(CDEM)and the landau explosion source model,with varying thicknesses of bottom cushion *** numerical simulation results indicate that with increasing cushion thickness,the absorption of energy generated by the explosion becomes more pronounced,resulting in fewer cracks in the bottom rock *** illustrates the positive role of the cushion layer in protecting the integrity of the bottom rock mass.

关键词： bottom cushion layer blasting crack propagation continuum-discontinuum element method dynamic stress intensity factor

掺杂TEOS的YAG透明陶瓷相转变、烧结及微观组织

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中国有色金属学报 2010年第6期20卷 1220-1225页

作者：吕光哲孙旭东东北大学材料与冶金学院材料各向异性与织构教育部重点实验室沈阳110004 辽宁科技学院冶金系本溪117004

分别添加0.3%～3.0%(质量分数)的正硅酸乙酯(TEOS)为烧结助剂,利用液相烧结合成钇铝石榴石(Y3Al5O12,YAG)透明陶瓷。结果表明:液相生成是一种动态过程,最低形成温度约为1400℃。烧结体相对密度随着烧结温度的升高而明显增大,且烧结助剂... 详细信息

分别添加0.3%～3.0%(质量分数)的正硅酸乙酯(TEOS)为烧结助剂,利用液相烧结合成钇铝石榴石(Y3Al5O12,YAG)透明陶瓷。结果表明:液相生成是一种动态过程,最低形成温度约为1400℃。烧结体相对密度随着烧结温度的升高而明显增大,且烧结助剂对致密化过程的促进作用与其含量有关。当w(TEOS)≤0.5%时,TEOS能够更明显地促进烧结,TEOS含量对真空烧结后烧结体内残留硅酸盐相的数量、分布和显微结构产生很大的影响。当w(TEOS)≤0.5%时,Y2Si2O7与Al2O3·SiO2(MUl)固溶于YAG晶粒内,晶界处没有残留第二相;当w(TEOS)为2%和3%时,过量的Y2Si2O7与MUl在晶界析出而成为散射源,严重损害陶瓷的光学性能。

关键词： YAG透明陶瓷液相烧结液相含量 Y2Si2O7 3Al2O3·2SiO2

Fe-TiO_2 and Fe_2O_3 quantum dots co-loaded on MCM-41 for removing aqueous rose bengal by combined adsorption/photocatalysis

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Chinese Journal of Catalysis 2018年第5期39卷 920-928页

作者： Guoqiang Shen lun Pan zhe lü Chongqing Wang Fazal-e-Aleem Xiangwen Zhang Ji-Jun Zou Key laboratory for Green Chemical Technology of the Ministry of Education School of Chemical Engineering and TechnologyTianjin UnviersityTianjin 300072China Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) Tianjin 300072China Department of Physics The University of LahoreLahore 54600Pakistan

Adsorption and photodegradation are promising approaches for removing organic *** this study,we combined these two processes by co-loading Fe-TiO2 and Fe2O3 quantum dots(QDs)on porous MCM-41,using a simple hydrolysis method.X-ray diffraction,high-resolution transmission electron microscopy,and X-ray photoelectron spectroscopy results indicated that Fe-TiO2 QDs are formed at low Fe precursor concentrations,while additional Fe2O3 QDs are formed at higher Fe precursor *** Fe2O3 and Fe-TiO2 QDs impart high adsorption capacity and high photoactivity to the porous MCM-41,***,their combination results in a synergic effect of the adsorption and *** highest-performing sample exhibits excellent performance in removing rose bengal from aqueous solution.

关键词： Quantum dot Titania Ferric oxide Photocatalysis Adsorption

固体氧化物燃料电池阴极材料第一性原理研究进展

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稀有金属材料与工程 2023年第9期52卷 3273-3282页

作者：周永军吕喆徐世峰杨旭徐丹沈阳航空航天大学理学院辽宁沈阳110036 哈尔滨工业大学物理学院黑龙江哈尔滨150001

固体氧化物燃料电池(SOFC)具有能量转换效率高和燃料适应性广等突出优势,被认为是未来最有前景的清洁能源技术之一。目前SOFC研究热点是降低工作温度到500~800℃中低温区,以降低运行成本、增加可靠性,进而加速SOFC的商业化进程。阴极作... 详细信息

固体氧化物燃料电池(SOFC)具有能量转换效率高和燃料适应性广等突出优势,被认为是未来最有前景的清洁能源技术之一。目前SOFC研究热点是降低工作温度到500~800℃中低温区,以降低运行成本、增加可靠性,进而加速SOFC的商业化进程。阴极作为SOFC的重要组元,合理的设计和优化中低温下对氧还原反应具有较高催化活性的阴极材料至关重要。具有钙钛矿结构或由钙钛矿结构衍生出的层状结构的电子-离子混合导电型(MIECs)氧化物是目前研究最多的SOFC阴极材料。第一性原理可以弥补实验方面信息的缺失,能够提供电子结构、几何参数、吸附能及过渡态等相关信息,可以为合理设计和开发高性能的新型SOFC阴极材料提供科学依据和理论指导。本文通过对钙钛矿阴极氧空位的形成及迁移,氧分子在阴极(包括贵金属引入)表面上的吸附、解离、扩散过程及其规律进行了综述并总结了前期的研究成果,最后针对当前研究存在的问题及今后钙钛矿阴极的计算模拟研究方向进行了总结与展望。

关键词：固体氧化物燃料电池钙钛矿氧还原反应第一性原理