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调控N中间体与一维共轭配位聚合物的相互作用促进电催化硝酸盐还原产氨

中国化学会第六届全国结构化学学术会议

作者： Hong-Xia Chen~a,Feng Zhou~a,Qing-Feng Xu~(*a),jian-mei lu~(*a) a Key Laboratory of Organic Synthesis of jiangsu Province,College of Chemistry,Chemical Engineering and Materials Science,Soochow University,Suzhou 215123,People’s Republic of China

The combination of ditopic ligand(E)-4-((8-hydroxyquinolin-5-yl)diazenyl)benzenesulfonic acid (HQBS) with metal ions(M = Na,Pb,Zn,Mn,Cd) leads to five different coordination polymers (CPs):[Na2(QBS)(HO)](1,3D framework),{[Pb(QBS)(DMSO)]·(DMSO)·(CHOH)} (2·DMSO·CHOH,2D layer),{[Zn(QBS)(DMSO)]·2DMSO}(3·2DMSO,1D chain),

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Chinese Journal of Catalysis 2024年第7期62卷 231-242页

作者：刘青成雪峰霍锦艳刘小芳董慧龙曾宏波徐庆锋路建美苏州大学材料与化学化工学部江苏苏州215123 常熟理工学院材料工程学院江苏常熟215500 阿尔伯塔大学化学与材料工程学院埃德蒙顿加拿大

随着工农业的快速发展及城市化进程的加速,含硝酸盐废水的处理问题日益突出,对生态环境与人类健康造成了严重的威胁.电催化硝酸盐还原制备氨是一种在温和条件下去除硝酸盐污染物并生成氨的可行策略,兼具环境与经济双重价值.然而,由于硝... 详细信息

随着工农业的快速发展及城市化进程的加速,含硝酸盐废水的处理问题日益突出,对生态环境与人类健康造成了严重的威胁.电催化硝酸盐还原制备氨是一种在温和条件下去除硝酸盐污染物并生成氨的可行策略,兼具环境与经济双重价值.然而,由于硝酸盐还原制氨过程涉及复杂的电子质子转移过程,在低浓度(≤100 ppm)硝酸盐条件下,硝酸盐转化率低和氨产率不足严重制约了该技术的工业应用和发展潜力.因此,开发新型的可精准调控催化中心结构的催化剂材料,并通过调控催化剂表面对含N中间体的吸附来提高硝酸盐的转化率和氨的产率,对于解决上述问题具有重要意义.本文通过过渡金属离子M^(2+)(M=Fe,Co,Ni和Cu)与1,2,4,5-苯四胺(BTA)配体配位合成了四种一维共轭配位聚合物链(1D CCPs)材料,并将其应用于电催化硝酸盐还原制备高附加值产物氨.通过改变金属离子,电催化硝酸盐还原的选择性和活性得到了提高,这些1D CCPs结构为探索电催化硝酸盐还原制氨中的结构-活性关系提供了良好的平台.反应2 h后,Cu-BTA的产氨速率达到2.28 mg h^(-1)c^(-2),该结果是已报道的低浓度硝酸盐还原产氨的较高水平,在4h内硝酸盐的转化率达到96.74%,氨的选择性为79.46%.在经过25次循环实验后,催化性能依然保持良好.密度泛函理论计算结果表明,富电子Cu中心减弱了*NO中间体π轨道向Cu的d轨道的电子转移效率,并增强了Cu d_(yz)轨道对*NO的π轨道的电子反馈作用,提升了*NO中间体的自由能,N=O键被削弱,降低了NO→*NHO的ΔG值,进一步促进了氢化反应,提高了产氨速率.此外,Cu-BTA对氨的吸附能最小,有利于活性中心表面产生的氨快速脱除,加快了吸附-催化转化-脱附循环的速率,并且降低了催化中心中毒的可能性,从而实现了高催化活性和长期稳定性.综上,由于电催化硝酸盐还原制氨过程涉及八电子九质子转移过程,因此催化剂对不同含N中间体的适度吸附能力对保证高选择性,至关重要.本研究通过中心金属离子替换调控对N中间体的吸附,构建了可靠的电催化硝酸盐还原制氨的结构-活性关系,为电催化硝酸盐转化提供了新见解.

关键词：硝酸盐还原氨合成电催化一维共轭配位聚合物吸附调控

考虑场地效应的多点地震动作用下边坡永久位移分析

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岩土工程学报 2025年第1期47卷 65-75页

作者：宋健潘驭航陆朱汐姬建张飞高玉峰河海大学岩土力学与堤坝工程教育部重点实验室江苏南京210024 河海大学土木与交通学院江苏南京210024

地震动引起的边坡土层非线性动力响应可能导致坡体不同位置的地震动加速度时程不一致,从而对整个滑动体的极限平衡状态及之后的地震累积永久位移产生影响。为了研究场地效应对边坡地震永久位移的影响,基于极限平衡条分法,通过对不同土... 详细信息

地震动引起的边坡土层非线性动力响应可能导致坡体不同位置的地震动加速度时程不一致,从而对整个滑动体的极限平衡状态及之后的地震累积永久位移产生影响。为了研究场地效应对边坡地震永久位移的影响,基于极限平衡条分法,通过对不同土条赋予不同的水平和竖向地震动时程,推导出一种考虑场地效应的圆弧和任意形状滑面的多点地震作用下边坡永久位移分析方法。通过与有限差分软件FLAC的数值模拟结果进行对比,验证了该方法能够合理考虑地震动的场地效应。通过研究不同分布形式的多点地震动及竖向地震动对边坡永久位移的影响,结果表明:场地效应引起的水平地震动放大以及多点地震动不同分布模式会导致整个滑体平均地震惯性力作用位置发生改变,从而影响地震作用下滑动体沿滑面的永久变形量,竖向地震动对边坡地震位移影响较小。将方法应用于Lexington土石坝震后变形案例分析,计算得到的坝坡地震永久位移与实际震后观测值相吻合,证明了考虑场地效应的重要性及本文方法的合理性。

关键词：地震边坡稳定性场地效应永久位移极限平衡条分法多点地震动

Improving the damage potential of W-Zr reactive structure material under extreme loading condition

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Defence Technology（防务技术） 2021年第2期17卷 467-477页

作者： lu-yao Wang jian-wei jiang mei Li jian-bing Men Shu-you Wang State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing 100081PR China

Projectiles made of reactive structure materials(RSM)can damage the target with not only kinetic but also chemical energy,but the enhanced damage potential of RSM may become compromised if extreme loading condition disintegrates the projectile before the target is *** this work,a ductile coating of Ni was introduced to a tungsten-zirconium(W-Zr)alloy,a typical brittle RSM,to preserve the damage potential of the *** driving tests were carried out with X-ray photography and gunpowder deflagration driving tests were carried out with high-speed photography for the coated and uncoated RSM samples,*** craters on the witness target were analyzed by scanning electron microscopy and X-ray *** Ni coating was found to effectively preserve the damage potential of the W-Zr alloy under extreme loading conditions,whereas the uncoated sample fractured and ignited before impacting the target in both detonation and deflagration *** crack propagation between the reactively brittle core and the ductile coating was analyzed based on the crack arrest theory to mechanistically demonstrate how the coating improves the structural integrity and preserves the damage potential of the ***,the Ni coating envelops theW-Zr core until the coated sphere penetrates the target,and the coating is then eroded and worn to release the reactive core for the projectile to damage the target more intensively.

关键词： Reactive structure material Extreme loading Structural integrity Damage potential

增加氧饱和度对肺肿瘤组织摄取^(99m)锝-甲氧基异丁基异腈亲肿瘤显像的临床研究

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中国现代医学杂志 2015年第31期25卷 85-87页

作者：刘超李骏鹏陆建梅刘鹏杰贾莉邓智勇云南省肿瘤医院(昆明医科大学第三附属医院)核医学科云南昆明650118

目的探讨增加氧饱和度对肺肿瘤组织摄取^(99m)锝-甲氧基异丁基异腈亲肿瘤显像(^(99m)Tc-MIBI)的临床价值。方法 21例肺癌患者吸氧前后分别行单光子发射计算机断层成像术(SPECT)早期(吸氧前)和延迟(吸氧后)断层显像,计算早期相摄取比值(... 详细信息

目的探讨增加氧饱和度对肺肿瘤组织摄取^(99m)锝-甲氧基异丁基异腈亲肿瘤显像(^(99m)Tc-MIBI)的临床价值。方法 21例肺癌患者吸氧前后分别行单光子发射计算机断层成像术(SPECT)早期(吸氧前)和延迟(吸氧后)断层显像,计算早期相摄取比值(ER)和延迟相摄取比值(DR),分析吸氧前后ER值、DR值及氧饱和度的差异。结果早期ER和DR值分别为(2.06±0.62)和(2.45±0.71),吸氧后ER和DR值分别为(2.70±0.69)和(3.54±0.87)。吸氧后ER和DR值较吸氧前显著提高,差异有统计学意义(P<0.05)。吸氧前氧饱和度为(89.5±4.5)%,吸氧后氧饱和度为(96.3±2.5)%,吸氧后氧饱和度明显上升,差异有统计学意义(P<0.05)。结论增加氧饱和度对肺肿瘤组织摄取^(99m)Tc-MIBI有较高的临床价值。

关键词：吸氧 ^99m锝-甲氧基异丁基异腈氧饱和度显像剂

EFFECT OF SWEEP AND EJECTION EVENTS ON PARTICLE DISPERSION IN WALL BOUNDED TURBULENT FLOWS

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Journal of Hydrodynamics 2012年第5期24卷 794-799页

作者： luO jian-ping lu Zhi-ming QIU Xiang LI Dong-mei LIU Yu-lu School of Mechanical Engineering Shanghai Institute of Technology Shanghai 200235 China Shanghai Key Laboratory of Mechanics in Energy Engineering and Shanghai Institute of Applied Mathematicsand Mechanics Shanghai University Shanghai 200072 China School of Science Shanghai Institute of Technology Shanghai 200235 China Shanghai Institute of Technology Shanghai 200235 China

This paper studies the sweep and ejection events in a channel flow with Reτ = 80 by using Direct Numerical Simulation （DNS）. The effects of ejection and sweep events on the transport of fluid particles are analyzed separately through a quadrant technique. By analyzing trajectories of the particles released at different wall-normal locations, it is found that the particles from the ejection events mainly move upward while the particles from the sweep events move downward of the flow during short and intermediate diffusion time durations. Numerical results show that the effects of the ejection and sweep events on the mean displacement and the mean square dispersion remain for a long time, one-order of magnitude larger than the streamwise Lagrangian integral ~cales.

关键词： sweep ejection dispersion quadrant analysis turbulent channel flow

Recent progress in metal-organic frameworks(Part II—material application)

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Science China Chemistry 2025年

作者： jiandong Pang Wentao jiang Xue-Wen Zhang Hao-Long Zhou Yuxiu Sun Wei Gong Bin Wang Fuyin Ma Linwei He Long Chen Qiang Chen He-Qi Zheng Yuanjing Cui Wen-Jie Shi Chao Zhang mei Wang Yue-Biao Zhang Jie-Peng Zhang Chongli Zhong Yong Cui Shuao Wang jian-Rong Li Guodong Qian Tong-Bu lu Huan Pang Xian-He Bu Institute for New Energy Materials and Low Carbon Technologies School of Materials Science and Engineering Tianjin University of Technology School of Chemistry and Chemical Engineering Yangzhou University School of Materials Science and Engineering Nankai University School of Physical Science and Technology ShanghaiTech University MOE Key Laboratory of Bioinorganic and Synthetic Chemistry GBRCE for Functional Molecular Engineering School of Chemistry IGCMESun Yat-sen University Department of Chemistry Shantou University School of Chemical Engineering and Technology Tiangong University School of Chemistry and Chemical Engineering Shanghai Jiao Tong University State Key Laboratory of Radiation Medicine and Protection School for Radiological and Interdisciplinary Sciences Soochow University College of Materials Science & Engineering Beijing University of Technology State Key Laboratory of Silicon and Advanced Semiconductor Materials Cyrus Tang Center for Sensor Materials and ApplicationsSchool of Materials Science & Engineering Zhejiang University

As a class of functional crystalline porous materials, metal-organic frameworks(MOFs) gained rapid development in the past three decades and a large number of MOFs with ordered structures, high surface areas, and functionalized channels have been investigated. MOFs and MOF-derived/composite materials show great potential in many application fields. In this review, we discussed the main applications of MOFs and MOF-derived/composite materials in small molecule storage, separation, luminescence, sensing, multitype catalysis, and energy storage. In addition, challenges and problems in the future research of MOFsrelated fields are also discussed.

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Juvenile dermatomyositis:advances in clinical presentation,myositis-specific antibodies and treatment

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World Journal of Pediatrics 2020年第1期16卷 31-43页

作者： jian-Qiang Wu mei-Ping lu Ann M.Reed Department of Rheumatology Immunology and Allergy Children's HospitalZhejiang University School of MedicineHangzhou 310052China Department of Pediatrics Division of Pediatric RheumatologyDuke University School of MedicineDurham 27710USA

Background Juvenile dermatomyositis(JDM)is a chronic autoimmune disease characteristic by inflammation of small vessels within the skin,muscle and vital *** the clinical features and treatment of JDM have not been fully *** sources Databases underwent through PubMed for articles about the clinical features,myositis-specific antibodiesof JDM and its treatment,and we selected publications written in English which were relevant to the topic of this *** Clinical features and myositis-specific antibodies may predict the severity and prognosis of *** the mortality rate has been lower with traditional treatments,such as corticosteroid,intravenous immunoglobulin,and diseasemodifying anti-rheumatic drugs such as methotrexate,their usages are *** biological therapies seem to be effective for refractory JDM patients,but more clinical trials are *** JDM is a sever disease of *** need to better understand recent advances of JDM in the context of clinical features including skin manifestations,muscle weakness and organ damage,myositis-specific antibodies and their associated outcomes and the treatment of disease.

关键词： Biologic agents Extramuscular manifestations Juvenile dermatomyositis Myositis autoantibodies

Temporal changes in circulating P-selectin,plasminogen activator inhibitor-1,magnesium,and creatine kinase after percutaneous coronary intervention

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2010年第8期11卷 575-582页

作者： Shu-qin YING mei-xiang XIANG lu FANG jian-an WANG Department of Cardiology Hangzhou 310009 China) Cardiovascular Key Lab of Zhejiang Province the Second Affiliated Hospital School of Medicine Zhejiang University Hangzhou 310009 China Baker IDI Heart and Diabetes Institute Melbourne Victoria 3004 Australia

Objective： This study aims to determine the mechanisms underlying restenosis and ischemia-reperfusion injury of the myocardium after percutaneous coronary intervention （PCI）. Methods： The present study examined serial changes （5 min, 30 min, 2 h, 6 h, and 24 h after PCI） in circulating P-selectin, plasminogen activator inhibitor-1 （PAl-l）, magnesium （Mg）, and creatine kinase-myocardial band fraction （CK-MB） levels, which may be associated with restenosis and myocardial injury in patients undergoing PCI. The occurrence rates of major adverse cardiovascular events were collected over a six-month follow-up. Results： PCI induced an early elevation of P-selectin, which cor- related positively with the inflation pressure used in the PCI procedure. PCI also caused a significant and sustained decrease in serum Mg in PCI patients, without an effect on PAI-I. An increase in CK-MB was observed in PCI patients, although values were within normal reference range. In addition, elevated P-selectin and decreased Mg measured shortly after the coronary angioplasty procedure were associated with recurrent treatment and heart failure, respec- tively. Conclusions： Our study demonstrates that PCI induces temporal changes of P-selectin, Mg, and CK-MB, which may be involved in restenosis and ischemia-reperfusion injury. These findings highlight the need for using antiplatelet therapy and Mg to reduce the risks associated with PCI.

关键词： Percutaneous coronary intervention Restenosis Ischemia-reperfusion injury P-selectin Magnesium