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Fabrication of lithium silicates from zeolite for CO2 capture at high temperatures

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Journal of Energy Chemistry 2019年第6期28卷 81-89页

作者： Yu Zhang Yanshan Gao Benoit Louis Qiang Wang weiran lin College of Environmental Science and Engineering Beijing Forestry UniversityBeijing 100083China ICPEES - Institut de Chimie et Procedes pour l’energie l’Environnement et la SanteUMR 7515 CNRS - Universite de Strasbourg67087 StrasbourgFrance Beijing Research Institute of Chemical Industry SINOPECBeijing 100013China

Li4Si O4 has been regarded as one of the most promising high-temperature CO2 ***,for practical applications,its CO2sorption kinetics,cycling stability and sorption properties at lower temperatures or lower CO2 concentrations have to be *** this contribution,four Li4Si O4 sorbents were synthesized from zeolite precursors MCM-41,MCM-48,TS-1,and *** CO2 uptake,cycling stability and the optimal CO2 sorption conditions were *** the samples,MCM-41-Li4Si O4 showed the best cycling stability at 650°C,with a stable reversible CO2 uptake of 29.1 wt%under 100 vol%CO2 during 20 *** its sorption kinetics and CO2 uptakes at lower temperatures and lower CO2 concentrations need to be *** then demonstrated that the sorption kinetics can be improved by modifying the MCM-41 precursor with metals such as Al,Ti,Ca,and *** Na-MCM-41-Li4Si O4 sample exhibited the highest sorption rate,and reached the equilibrium sorption capacity close to the theoretical value of 36.7 wt%within 20 *** addition,we proved that coating the MCM-41-Li4Si O4with Na2CO3and K2CO3can significantly increase the CO2uptakes at lower temperatures(e.g.550℃)and lower CO2concentrations(10–20 vol%).At 550℃ and under 20 vol%CO2,15 wt%K2CO3-MCM-41-Li4Si O4 and 10 wt%Na2CO3-MCM-41-Li4Si O4 sorbents resulted in a CO2 uptake of 32.2 wt%and 34.7 wt%,respectively,which are much higher than that of MCM-41-Li4Si O4(11.8 wt%).These two sorbents also showed good cycling *** promoiting mechasnim by alkali carbonate coating was discussed by a doubleshell model.

关键词： Li4SiO4 Zeolite Lithium silicate-based CO2 sorbents Global warming

Manipulating d-d orbital hybridization induced by Mo-doped Co_(9)S_(8) nanorod arrays for high-efficiency water electrolysis

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Journal of Energy Chemistry 2024年第6期93卷 592-600,I0015页

作者： Xue Zhou Jing Li Guangyao Zhou weiran Huang Yucan Zhang Jun Yang Huan Pang Mingyi Zhang Dongmei Sun Yawen Tang lin Xu Jiangsu Key Laboratory of New Power Batteries Jiangsu Collaborative Innovation Centre of Biomedical Functional MaterialsSchool of Chemistry and Materials ScienceNanjing Normal UniversityNanjing 210023JiangsuChina 'College of Science Jinling Institute of TechnologyNanjing 211169JiangsuChina State Key Laboratory of Multiphase Complex Systems Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China Nanjing IPE Institute of Green Manufacturing Industry Nanjing 211100JiangsuChina School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou 225009JiangsuChina Key Laboratory for Photonic and Electronic Bandgap Materials Ministry of EducationSchool of Physics and Electronic EngineeringHarbin Normal UniversityHarbin 150025HeilongjiangChina

Precisely refining the electronic structure of electrocatalysts represents a powerful approach to further optimize the electrocatalytic ***,we demonstrate an ingenious d-d orbital hybridization concept to construct Mo-doped Co_(9)S_(8) nanorod arrays aligned on carbon cloth(CC)substrate(abbreviated as Mo-Co_(9)S_(8)@CC hereafter)as a high-efficiency bifunctional electrocatalyst toward water *** has experimentally and theoretically validated that the 4d-3d orbital coupling between Mo dopant and Co site can effectively optimize the H_(2)O activation energy and lower H^(*)adsorption energy barrier,thereby leading to enhanced hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)*** to the unique electronic and geometrical advantages,the optimized Mo-Co_(9)S_(8)@CC with appropriate Mo content exhibits outstanding bifunctional performance in alkaline solution,with the overpotentials of 75 and 234 mV for the delivery of a current density of 10 mA cm^(-2),small Tafel slopes of 53.8 and 39.9 mV dec~(-1)and long-term stabilities for at least 32 and 30 h for HER and OER,*** impressively,a water splitting electrolylzer assembled by the self-supported Mo-Co_(9)S_(8)@CC electrode requires a low cell voltage of 1.53 V at 10 mA cm^(-2)and shows excellent stability and splendid reversibility,demonstrating a huge potential for affordable and scalable electrochemical H_(2) *** innovational orbital hybridization strategy for electronic regulation herein provides an inspirable avenue for developing progressive electrocatalysts toward new energy systems.

关键词： d-d orbital hybridization Transition metal sulfides Nanorods arrays Water electrolysis

Mitochondrial components transferred by MSC-derived exosomes promoted bone regeneration under high salt microenvironment via DRP1/Wnt signaling

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Nano Research 2024年第9期17卷 8301-8315页

作者： Yiming Wang Shuai lin Liujing Chen Mingzhao Li Zilu Zhu Zimeng Zhuang Meilian Cai Han Zhang Chenyang Xing weiran Li Ruili Yang Department of Orthodontics School and Hospital of StomatologyPeking UniversityBeijing 100081China National Clinical Research Center for Oral Diseases&National Engineering Laboratory for Digital and Material Technology of Stomatology School and Hospital of StomatologyPeking UniversityBeijing 100081China Beijing Key Laboratory of Digital Stomatology School and Hospital of StomatologyPeking UniversityBeijing 100081China

Bone homeostasis relies on the dynamic balance of osteoblast mediated bone construction and osteoclast-based bone resorption processes,which has been reported to be controlled by various mineral ***,there is no direct evidence of the effect and the underlying mechanism of high salt stimulation on bone *** this study,we demonstrated that high salt stimulation promoted excessive mitochondrial fission mediated by dynamin-related protein 1 in mesenchymal stem cells,which resulted in impaired mitochondrial morphology and ***,this impairment hindered the bone formation of mesenchymal stem cells,resulting in osteopenia in ***,the impaired property of mesenchymal stem cells which was caused by high salt was controlled by dynamin-related protein 1 mediated mitochondrial fission,which inhibited the classical Wnt signaling ***,the osteogenic property of mesenchymal stem cells decreased by high salt could be restored by exosomes to transfer the mitochondrial DNA into the impaired mesenchymal stem *** study provides not only new strategies for promoting bone regeneration but also new insights into the effect and mechanism of exosome-mediated delivery.

关键词： high salt dynamin-related protein 1 mitochondrial injury exosomes bone regeneration

Epitaxial quasi-2D/3D hybrid perovskite heterojunctions for photodetector with enhanced detectivity and stability

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Nano Research 2024年第7期17卷 6594-6602页

作者： Yifu Chen lin Zhang Xinxin Peng weiran Qin Shiqing Li Yingwei Wang Zhihui Chen Si Xiao Bin Yang Biao Liu Junliang Yang Han Huang Yun lin Jun He Liming Ding Yongbo Yuan Hunan Key Laboratory of Super Microstructure and Ultrafast Process School of PhysicsCentral South UniversityChangsha 410083China Hunan Key Laboratory of Nanophotonics and Devices School of PhysicsCentral South UniversityChangsha 410083China College of Materials Science and Engineering Hunan UniversityChangsha 410082China Department of Photoelectric Information School of PhysicsCentral South UniversityChangsha 410083China Center for Excellence in Nanoscience Key Laboratory of Nanosystem and Hierarchical FabricationNational Center for Nanoscience and TechnologyChinese Academy of ScienceBeijing 100190China

Although numerous metal halide perovskite materials have been investigated in the field of optoelectronic,the development of perovskite heterojunctions with exotic structures is still ***,we report the epitaxial growth of quasi-two-dimensional(Q-2D)perovskites on methylammonium lead iodide(MAPbI_(3))single crystals to form perovskite heterojunctions with interfacial *** MAPbI_(3)adjacent to epitaxial Q-2D perovskite shows blue shifted photoluminescence with shortened lifetime,which becomes significant with the reduced layer number of the Q-2D *** findings suggest the presence of an interfacial strain gradient leading to enhanced photocarrier ***,compared to the MAPbI_(3)single crystal detector,the BA_(2)MAPb_(2)I_(7)/MAPbI_(3)(BA:n-butylamine)heterojunction-based photodetector demonstrates a bandpass detecting property and exhibits 5 times enhanced external quantum efficiency and 83 times enhanced specific detectivity(D*=3.26×10^(11)Jones).Remarkably,the unencapsulated BA_(2)MAPb_(2)I_(7)/MAPbI_(3)heterojunction is stable in ambient condition for>300 *** Q-2D/3D heterojunction shows suppressed ion inter-diffusion due to the presence of Q-2D phase.

关键词： epitaxial growth interfacial strain quasi-two-dimensional/three-dimensional(Q-2D/3D)heterojunctions ion inter-diffusion

Nanomedicine integrating the lipidic derivative of 5-fluorouracil,miriplatin and PD-L1 si RNA for enhancing tumor therapy

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Chinese Chemical Letters 2024年第6期35卷 385-391页

作者： An Lu Yuhao Guo Yi Yan lin Zhai Xiangyu Wang weiran Cao Zijie Li Zhixia Zhao Yujie Shi Yuanjun Zhu Xiaoyan Liu Huining He Zhiyu Wang Jian-Cheng Wang Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems State Key Laboratory of Natural and Biomimetic DrugsSchool of Pharmaceutical SciencesPeking UniversityBeijing 100191China Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics School of PharmacyTianjin Medical UniversityTianjin 300070China Department of Immuno-oncology The Fourth Hospital of Hebei Medical UniversityShijiazhuang 050011China Department of Pharmacy Clinical Trial Research CenterChina-Japan Friendship HospitalBeijing 100029China Laboratory of innovative formulations and pharmaceutical excipients Ningbo Institute of Marine MedicinePeking UniversityNingbo 315832China

Immunosuppressive microenvironments present critical problems in clinical *** regulate the tumor immune microenvironment for enhancing antitumor effect,a combination of immune checkpoint inhibitors(ICIs)with chemotherapeutics has been applied *** this study,miriplatin(MiPt),the lipidic derivative of 5-fluorouracil(Fu-OA),as well as the programmed death ligand 1(PD-L1)target si RNA(siPD-L1)were integrated into Lip-Pt/Fu@siPD-L1 nanoparticles(NPs)for *** vitro results showed that Lip-Pt/Fu@siPD-L1 NPs could exhibit effective siRNA gene silencing and promote the phagocytosis of tumor cells by ***,in vivo results revealed that LipPt/Fu@siPD-L1 NPs showed significantly higher anti-tumor efficiency than that of the physical mixing of Mi Pt,5-fluorouracil,and Lip@siPD-L1 NPs(delivery of siPD-L1 by liposomes).The best anti-tumor efficiency of Lip-Pt/Fu@siPD-L1 NPs resulted from the synergistic immunotherapeutic effects of Mi Pt and siPD-L1 based on the inhibition of CD47 expression and the downregulation of PD-L1 in tumor cells,which elicited a robust anti-tumor immune response through the activation of macrophage phagocytosis and immune checkpoint *** Lip-Pt/Fu@siPD-L1 NPs provide a potential strategy for tumor chemo-immunotherapy.

关键词： Chemo-immunotherapy Immune checkpoint inhibition Gene silencing Miriplatin Macrophage phagocytosis Nanotechnology

纪念西南剧展80周年暨第八届全国话剧优秀剧目展演学术研讨

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艺术评论 2024年第7期 22-65页

作者：欧阳维安葵朱恒夫陈曦郑传寅王馗彭涛毛夫国胡应明林蔚然刘平徐健宋宝珍赵晨琳袁雪峰吴凤未不详中国艺术研究院戏曲研究所中国戏曲学会上海师范大学中国艺术研究院科研管理处武汉大学艺术学院中央戏剧学院北京市文联中国艺术研究院话剧研究所中央戏剧学院国内合作与交流处中国社会科学院文学研究所《文艺报》新闻部上海文广演艺(集团)有限公司南京广播电视集团大型活动部

1944年2月到5月,在中国共产党的领导下,以欧阳予倩、田汉、熊佛西、翟瞿白音等为代表的著名戏剧家,广泛团结文化界和社会各界进步力量,集合湘、桂、粤、赣、川、滇、鄂等地30多个戏剧团体,上千名戏剧工作者冲破重重阻力,在广西桂林召开... 详细信息

1944年2月到5月,在中国共产党的领导下,以欧阳予倩、田汉、熊佛西、翟瞿白音等为代表的著名戏剧家,广泛团结文化界和社会各界进步力量,集合湘、桂、粤、赣、川、滇、鄂等地30多个戏剧团体,上千名戏剧工作者冲破重重阻力,在广西桂林召开了影响深远的西南第一届戏剧展览会。

关键词：熊佛西戏剧工作者田汉西南剧展欧阳予倩著名戏剧家学术研讨广西桂林

基于认知发展理论的小学外部空间设计策略--以高新区三岐小学为例

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华中建筑 2023年第8期41卷 42-46页

作者：林蔚然福建省建筑设计研究院有限公司

要基于皮亚杰认知发展的四阶段理论与加德纳的多元智能理论的分析,阐明儿童认知发展的特点,描述儿童认知发展的具体状态;推演出小学校园外部空间设计的导则,即吸引性、多样性及易达性。结合三岐小学的案例,通过层叠地台、柔和界面、前... 详细信息

要基于皮亚杰认知发展的四阶段理论与加德纳的多元智能理论的分析,阐明儿童认知发展的特点,描述儿童认知发展的具体状态;推演出小学校园外部空间设计的导则,即吸引性、多样性及易达性。结合三岐小学的案例,通过层叠地台、柔和界面、前景庇护、绿色森林、层级空间、多元空间、同层连接、风雨连廊等设计策略,将认知心理学的理论应用到工程实践中,以期给小学外部空间设计提供一个新的视角。

关键词：让·皮亚杰四阶段理论霍德华·加德纳多元智能理论吸引性多样性易达性

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来云边，邂逅飞鸟与书

文化交流 2022年第3期 62-66页

作者：林蔚然

有的时候，身体在各处奔走，而灵魂却停滞不前。经历过白天疲惫不堪的旅程，为何不走慢一点，等一等灵魂?“休息与工作的关系，正如眼睑与眼睛的关系”，找个地方小憩一下吧，在那暮色降临的寂静山林。释放过后，才能继续上路。云边眠...

有的时候，身体在各处奔走，而灵魂却停滞不前。经历过白天疲惫不堪的旅程，为何不走慢一点，等一等灵魂?“休息与工作的关系，正如眼睑与眼睛的关系”，找个地方小憩一下吧，在那暮色降临的寂静山林。释放过后，才能继续上路。云边眠飞鸟在浙江丽水，有这么一个村落，说是浙江最美古村落也不为过：它就是位于丽水松阳县的陈家铺村，距今有600多年的历史，是崖居式古村落的典型代表之一，有“小布达拉宫”的美称。整个村子背靠平均海拔800多米以上的高山岩石及悬崖，因地势高还面朝峡谷，一年有200多天都笼罩在山云水雾之中。山多地少，北高南低，形成了房屋依山顺势而建的“崖居”奇观：上百幢由泥土、青砖、

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实践课程在线教学改革探索——以智能追光光伏发电装置实践单元为例

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实验技术与管理 2022年第4期39卷 178-180,185页

作者：林蔚然徐伟国陈凯赵萌李双寿清华大学基础工业训练中心北京100084

实践课程是在线教学中最有挑战性的课程形式,能否达到既定教学目标很大程度取决于适于居家学习学情的实践内容建设、教学过程优化及考评体系构建。通过明确教学目标、梳理教学主线,设置更适合在线教学的实践内容,采取充分考虑在线实践... 详细信息

实践课程是在线教学中最有挑战性的课程形式,能否达到既定教学目标很大程度取决于适于居家学习学情的实践内容建设、教学过程优化及考评体系构建。通过明确教学目标、梳理教学主线,设置更适合在线教学的实践内容,采取充分考虑在线实践学习特点的教学手段,并配合多维度考评体系,可有效克服在线实践教学所面临的问题,取得较好的教学效果。

关键词：在线教学项目式教学实践课程光伏发电智能控制