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Asymmetrically coordinated single atom Cu catalyst with unsaturated C-Cu-N structure for CO_(2) reduction to CO

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Nano Research 2024年第5期17卷 3911-3918页

作者： Zheng Liu Yuxuan Liu Jingqiao Zhang ting cao Zhiyi Sun Juzhe Liu Huishan Shang State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental SciencesBeijing 100012China SEPA Key Laboratory of Eco-Industry Chinese Research Academy of Environmental SciencesBeijing 100012China The Key Laboratory of Resources and Environmental System Optimization Ministry of EducationCollege of Environmental Science and EngineeringNorth China Electric Power UniversityBeijing 102206China School of Chemical Engineering Zhengzhou UniversityZhengzhou 450001China

Single atom catalysts(SACs)play a crucial role in energy catalysis due to their distinct coordination environment and high atomic utilization *** study focuses on the synthesis of a monatomic Cu catalyst with Cu-N1C1 coordination anchored to N-doped Ti_(3)C_(2)T_(x) MXene(Cu SA@N-Ti_(3)C_(2)T_(x))to achieve efficient reduction of CO_(2) to *** characterization,including morphology and multispectral analysis,confirmed the uniform distribution of asymmetrically coordinated Cu atoms in unsaturated C-Cu-N bridge fragments on Ti_(3)C_(2)T_(x).The Cu SA@N-Ti_(3)C_(2)T_(x) catalyst exhibited an excellent CO selectivity with Faraday efficiency of 97.4%at-0.58 V *** hydrogen electrode(RHE)and satisfactory *** in situ X-ray absorption fine structure(XAFS)results confirmed that the carbon dioxide reduction reaction(CO_(2)RR)product distribution is mainly affected by potential-dependent valence change of Cu *** findings highlight the extensive potential of tuning coordination structure of MXene-based single-atom catalysts for CO_(2) reduction reactions.

关键词： cooper single atom atomic regulation MXene Ti_(3)C_(2)T_(x) CO_(2)reduction

Surface-induced Microstructure and Performance Changes in P3HT Ultrathin Films

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Chinese Journal of Polymer Science 2024年第6期42卷 805-814页

作者： Hong-Tao Shan Jia-Xin He Bing-Yan Zhu Xue-ting cao Ying-Ying Yan Jian-Jun Zhou Hong Huo Beijing Key Laboratory of Energy Conversion and Storage Materials College of ChemistryBeijing Normal UniversityBeijing100875China

In this work,poly(3-hexylthiophene)(P3HT)ultrathin films(P3HT-T)were prepared by spin-coating a dilute P3HT solution(in a toluene:o-dichlorobenzene(Tol:ODCB)blend with a volume ratio of 80:20)with ultrasonication and the addition of the nucleating agent bicycle[2.2.1]heptane-2,3-dicarboxylic acid disodium salt(HPN-68L)on glass,Si wafers and indium tin oxide(ITO)*** electrical and mechanical properties of the P3HT-T ultrathin films were investigated,and it was found that the conductivity and crack onset strain(COS)were simultaneously improved in comparison with those of the corresponding pristine P3HT film(P3HT-0,without ultrasonication and nucleating agent)on the same substrate,regardless of what substrate was ***,the conductivity of P3HT-T ultrathin films on different substrates was similar(varying from 3.7 S·cm^(-1)to 4.4 S·cm^(-1)),yet the COS increased from 97%to 138%by varying the substrate from a Si wafer to *** grazing-incidence wide-angle X-ray diffraction(GIXRD),UV-visible(UV-Vis)spectroscopy and atomic force microscopy(AFM),we found that the solid order and crystallinity of the P3HT-T ultrathin film on the Si wafer are highest,followed by those on glass,and much lower on ***,the surface energy and roughness of three substrates were investigated,and it was found that the polar component of the surface energyγp plays a critical role in determining the crystalline microstructures of P3HT ultrathin films on different *** work indicates that the P3HT ultrathin film can obviously improve the stretchability and simultaneously retain similar electrical performance when a suitable substrate is *** findings offer a new direction for research on stretchable CP ultrathin films to facilitate future practical applications.

关键词： P3HT ultrathin film Substrate Crystalline microstructures Polar component of the surface energy Electrical and stretchable performances

Asymmetrically coordinated main group atomic In-S_(1)N_(3)interface sites for promoting electrochemical CO_(2)reduction

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Nano Research 2024年第6期17卷 5011-5021页

作者： Yan Gao Jinlong Ge Jingqiao Zhang ting cao Zhiyi Sun Wensheng Yan Yu Wang Jie Lin Wenxing Chen Zheng Liu Anhui Provincial Engineering Laboratory of Silicon-based Materials Bengbu UniversityBengbu 233030China State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental SciencesBeijing 100012China SEPA Key Laboratory of Eco-Industry Chinese Research Academy of Environmental SciencesBeijing 100012China Ningbo Institute of Materials Technology and Engineering Chinese Academy of ScienceNingbo 315201China Energy&Catalysis Center School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China National Synchrotron Radiation Laboratory University of Science and Technology of ChinaHefei 230029China Shanghai Synchrotron Radiation Facilities Shanghai Institute of Applied PhysicsChinese Academy of ScienceShanghai 201204China

Designing catalysts with highly active,selectivity,and stability for electrocatalytic CO_(2)to formate is currently a severe ***,we developed an electronic structure engineering on carbon nano frameworks embedded with nitrogen and sulfur asymmetrically dual-coordinated indium active sites toward the efficient electrocatalytic CO_(2)reduction *** expected,atomically dispersed In-based catalysts with In-S_(1)N_(3)atomic interface with asymmetrically coordinated exhibited high efficiency for CO_(2)reduction reaction(CO_(2)RR)to *** achieved a maximum Faradaic efficiency(FE)of 94.3%towards formate generation at−0.8 V *** hydrogen electrode(RHE),outperforming that of catalysts with In-S2N2 and In-N4 atomic *** at a potential of−1.10 V ***,In-S_(1)N_(3)achieves an impressive Faradaic efficiency of 93.7%in flow *** catalytic performance of In-S_(1)N_(3)sites was confirmed to be enhanced through in-situ X-ray absorption near-edge structure(XANES)measurements under electrochemical *** discovery provides the guidance for performance regulation of main group metal catalysts toward CO_(2)RR at atomic scale.

关键词： indium single-site catalyst main group metal asymmetrical coordination CO_(2)reduction reaction structure-activity relationship

China-Latin America Green Cooperation under the Global Development Initiative

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China International Studies 2024年第3期 73-99页

作者： cao ting the Research Office for Latin American Studies Institute of International StudiesFudan University

The international development environment is entering a chaotic and volatile *** world economy remains sluggish,while geopolitical conflicts,climate change,food crisis and a multitude of other challenges become more closely intertwined and mutually *** this context,countries across the world have been prompted to look for healthy,feasible and sustainable solutions to keep their socioeconomic development momentum on track.

关键词： Latin mutually prompt

Alkaline sphingomyelinase deficiency impairs intestinal mucosal barrier integrity and reduces antioxidant capacity in dextran sulfate sodium-induced colitis

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World Journal of Gastroenterology 2024年第10期30卷 1405-1419页

作者： Ye Tian Xin Li Xu Wang Si-ting Pei Hong-Xin Pan Yu-Qi Cheng Yi-Chen Li Wen-ting cao Jin-Dong Ding Petersen Ping Zhang International School of Public Health and One Health Hainan Medical UniversityHaikou 571199Hainan ProvinceChina Medical Laboratory Science and Technology College Harbin Medical University-Daqing CampusDaqing 163000Heilongjiang ProvinceChina Department of Laboratory Diagnosis Qiqihar Tuberculosis Control CenterQiqihar 161000Heilongjiang ProvinceChina Department of Public Health University of CopenhagenCopenhagen 1353Denmark Department of Public Health University of Southern DenmarkOdense 5000Denmark

BACKGROUND Ulcerative colitis is a chronic inflammatory disease of the colon with an unknown *** sphingomyelinase(alk-SMase)is specifically expressed by intestinal epithelial cells,and has been reported to play an anti-inflammatory ***,the underlying mechanism is still *** To explore the mechanism of alk-SMase anti-inflammatory effects on intestinal barrier function and oxidative stress in dextran sulfate sodium(DSS)-induced *** Mice were administered 3%DSS drinking water,and disease activity index was determined to evaluate the status of *** permeability was evaluated by gavage administration of fluorescein isothiocyanate dextran,and bacterial translocation was evaluated by measuring serum *** epithelial cell ultrastructure was observed by electron *** blotting and quantitative real-time reverse transcription-polymerase chain reaction were used to detect the expression of intestinal barrier proteins and mRNA,*** oxidant and antioxidant marker levels were analyzed using commercial kits to assess oxidative stress *** Compared to wild-type(WT)mice,inflammation and intestinal permeability in alk-SMase knockout(KO)mice were more severe beginning 4 d after DSS *** mRNA and protein levels of intestinal barrier proteins,including zonula occludens-1,occludin,claudin-3,claudin-5,claudin-8,mucin 2,and secretory immunoglobulin A,were significantly reduced on 4 d after DSS *** observations revealed progressive damage to the tight junctions of intestinal epithelial ***,by day 4,mitochondria appeared swollen and ***,compared to WT mice,serum malondialdehyde levels in KO mice were higher,and the antioxidant capacity was significantly *** expression of the transcription factor nuclear factor erythroid 2-related factor 2(Nrf2)in the colonic mucosal tissue of KO mice was significantly decr

关键词： Alkaline sphingomyelinase Intestinal mucosal barrier Antioxidant capacity Dextran sulfate sodium-induced colitis nuclear factor erythroid 2-related factor 2

全球发展倡议下的中拉绿色合作:进展、挑战与路径

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国际问题研究 2024年第2期 91-109,133页

作者：曹廷复旦大学国际问题研究院拉美研究室

在百年未有之大变局下,绿色发展成为包括中国和拉美国家在内的广大发展中国家的必由选择之一。中国提出的全球发展倡议有利于促进全球可持续发展和推进国际绿色合作,得到了许多拉美国家的积极响应。当前,中拉绿色合作在顶层设计、清洁... 详细信息

在百年未有之大变局下,绿色发展成为包括中国和拉美国家在内的广大发展中国家的必由选择之一。中国提出的全球发展倡议有利于促进全球可持续发展和推进国际绿色合作,得到了许多拉美国家的积极响应。当前,中拉绿色合作在顶层设计、清洁能源、绿色农业、绿色交通等诸多领域已取得积极成果,且存在诸多发展机遇。拉美国家可成为全球发展倡议走深走实的重要合作伙伴。同时,在复杂国际和地区形势下,中拉推进绿色合作亦面临不少挑战。中方宜加大关注、强化布局、深耕细作,与拉美国家在政府、企业、高校及媒体等层面加强互动,共同推动绿色合作再上新台阶,将中拉关系打造为全球发展倡议和南南合作的重要示范。

关键词：全球发展倡议中拉关系绿色合作可持续发展

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啮齿动物青光眼模型研究进展

中华实验眼科杂志 2024年第6期42卷 557-563页

作者：谢志(综述) 曹婷张旭(审校) 南昌大学附属眼科医院、江西省眼科学与视觉科学研究所、江西省眼科学重点实验室南昌330006 南昌大学眼视光学院南昌330006

青光眼是一组以视网膜神经节细胞及其轴突进行性丢失为特征的视神经病变,已成为全球不可逆性致盲的常见原因,但其病理生理机制仍不清楚。因此,合理的青光眼动物模型对揭示青光眼发病机制和改善治疗方案十分重要。近年来,啮齿动物由于具... 详细信息

青光眼是一组以视网膜神经节细胞及其轴突进行性丢失为特征的视神经病变,已成为全球不可逆性致盲的常见原因,但其病理生理机制仍不清楚。因此,合理的青光眼动物模型对揭示青光眼发病机制和改善治疗方案十分重要。近年来,啮齿动物由于具有众多优点而逐渐成为青光眼模型制作的主流选择,除转基因小鼠可自发诱导青光眼外,青光眼实验模型主要分为眼压依赖性和非眼压依赖性。眼压依赖性青光眼模型通过各种手段阻碍房水流出,从而诱导眼压升高;非眼压依赖性青光眼模型试图评估正常眼压性青光眼的相关发病机制。本文就啮齿动物各种青光眼模型的不同损伤机制、操作方法、优点和局限性进行综述。

关键词：青光眼动物模型啮齿动物眼压转基因小鼠

核心素养视域下语文信息性阅读测评指标体系初探

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教育参考 2024年第8期 7-12页

作者：曹婷西安交通大学苏州附属中学江苏苏州215000

随着信息社会的快速发展,尽快构建核心素养视域下的信息性阅读测评指标体系成了当前语文教育的重要任务之一。本研究参考了教育评价相关研究中测评指标体系的构建方法,运用文献法、专家咨询法和问卷调查法,初步建立了语文核心素养视域... 详细信息

随着信息社会的快速发展,尽快构建核心素养视域下的信息性阅读测评指标体系成了当前语文教育的重要任务之一。本研究参考了教育评价相关研究中测评指标体系的构建方法,运用文献法、专家咨询法和问卷调查法,初步建立了语文核心素养视域下的信息性阅读测评指标体系。该体系包括3个一级指标,9个二级指标和29个三级指标。通过使用层次分析法进行一致性检验,得出各个指标的权重值,借此探讨语文教育评价改革的方向。

关键词：核心素养语文教育信息性阅读

科技金融政策的创新溢出效应——基于知识溢出与生产网络的双重视角

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现代金融研究 2024年第9期29卷 37-40,41-47页

作者：曹廷求彭文浩山东大学经济学院济南250100 山东大学(济南)产业金融研究中心

本文以2011年科技部等五部门实施的“促进科技和金融结合试点”政策为准自然实验,基于2007-2015年我国215个城市的面板数据,采用双重差分法检验了试点政策的创新溢出效应及其溢出渠道。研究发现,试点政策具有创新溢出效应,显著提高了省... 详细信息

本文以2011年科技部等五部门实施的“促进科技和金融结合试点”政策为准自然实验,基于2007-2015年我国215个城市的面板数据,采用双重差分法检验了试点政策的创新溢出效应及其溢出渠道。研究发现,试点政策具有创新溢出效应,显著提高了省内非试点城市的创新水平。溢出渠道检验表明,试点政策的创新效应主要通过知识溢出和生产网络两个渠道从试点城市传导到省内非试点城市。进一步分析发现,在与试点城市地理距离更近、交通基础设施更完善的省内非试点城市中,试点政策的创新溢出效应更明显。

关键词：科技金融政策创新溢出效应知识溢出生产网络