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Punicalagin prevents obesity-related cardiac dysfunction through promoting DNA demethylation in mice

Food Science and Human Wellness 2024年第3期13卷 1465-1474页

作者： shengjie Pei Run Liu Qingqing Ma peng Jiang Xin He Zhongshi Qi Jiacheng Fang Xu Yang Zirui Yao Xiaoqian Liu Xianfeng Jing Lei Chen Duo Li Institute of Nutrition&Health Qingdao UniversityQingdao 266071China School of Public Health Qingdao UniversityQingdao 266071China Central Laboratory Guizhou Aerospace HospitalZunyi 563000China Health Centers of Licha Town Qingdao 266071China College of Computer Science and Technology Qingdao UniversityQingdao 266071China

The aim of this study was to investigate whether punicalagin(PU)could prevent obesity-related cardiac dysfunction by promoting DNA demethy lation,and to explore its possible mechanism.C57BL/6J mice were fed with standard diet,high-fat diet(HFD),HFD supplemented with resveratrol,low-dose PU(LPU)and high-dose PU(HPU)for 8 weeks.Compared with HFD group,body weight was significantly lower in PU treatment groups,number of cardionwocytes and the protein level of myosin heavy chain 7B were significantly higher in PU treatment groups.Levels of 5-hydroxymethylcytosine and 5-formylcytosine were significantly lower in HFD group than in other groups.Compared with the HFD group,the protein level of ten-eleven translocation enzyme(TET)2 was significantly higher in PU treatment groups,p-AMP-activated protein kinase(AMPK)was significantly higher in LPU group.Levels of total antioxidant capacity and the protein levels of complexesⅡ/Ⅲ/Ⅴ,oxoglutarate dehydrogenase,succinate dehydrogenase B and fumarate hdrolase were significantly lower in HFD group than PU treatment group.The ratio of(succinic acid+fumaric acid)/a-ketoglutarate was significantly higher in HFD group than other groups.In conclusion,PU up-regulated TETs enzyme activities and TET2 protein stability through alleviating mitochondrial dysfunction and activating AMPK,so as to promote DNA demethylation,thus preventing obesity-related cardiac dysfunction.

关键词： DNA demethylation Mitochondrial function Obesity-related cardiac dysfunction Punicalagin Ten-eleven translocation family enzymes

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Recent Progress of Electrospun Nanofbers for Zinc–Air Batteries

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Advanced Fiber Materials 2022年第2期4卷 185-202页

作者： Yanan Hao Feng Hu Ying Chen Yonghan Wang Jianjun Xue Shengyuan Yang shengjie peng College of Materials Science and Technology Nanjing University of Aeronautics and AstronauticsNanjing 210016People’s Republic of China State Key Laboratory for Modifcation of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua University2999 North Renmin RoadShanghai 201620People’s Republic of China

As a potential electrochemical energy storage device,zinc–air batteries(ZABs)received considerable interest in the feld of energy conversion and storage due to its high energy density and eco-friendliness.Nevertheless,the sluggish kinetics of the oxygen reduction and oxygen evolution reactions limit the commercial development of ZABs,so it is of great signifcance to develop efcient,low-cost and non-noble metal bifunctional catalysts.Electrospun one-dimensional nanofbers with unique properties such as high porosity and large surface area have great advantages on possessing more active sites,shortening the difusion pathways for ions/electrons,and improving the kinetics via intercalation/de-intercalation processes,which endow them with promising application in the feld of energy storage devices,especially ZABs.This review frstly introduces the electrospinning technique.Then,the oxygen reduction/evolution reaction triggered by electrospun nanofbers with selfsupported structures are presented,followed by the application of electrospun nanofbers for liquid and fexible solid-state ZABs.Finally,the remaining challenges and research directions of ZABs based on electrospun nanofbers electrocatalysts are briefy discussed.

关键词： Electrospinning Nanofibers Self-supported structures Bifunctional electrocatalysts Zinc-air batteries

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Amorphous porous sulfides nanosheets with hydrophilic/aerophobic surface for high-current-density water splitting

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Chinese Chemical Letters 2023年第7期34卷 230-235页

作者： Xiaoli Wu Sheng Zhao Lijie Yin Luqi Wang Linlin Li Feng Hu shengjie peng Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies College of Materials Science and TechnologyNanjing University of Aeronautics and AstronauticsNanjing 210016China

The rational construction of electrocatalysts with desired features is significant but challenging for superior water splitting at high current density. Herein, amorphous Co Ni S nanosheets are synthesized on nickel foam(NF) through a facile structure evolution strategy and present advanced performance at high current densities in water splitting. The high catalytic activity can be attributed to the sufficient active sites exposed by the flexible amorphous configuration. Moreover, the hydrophilicity and aerophobicity of a-CoNiS/NF promote surface wettability of the self-supporting electrode and avoid the aggregation of bubbles, which expedites the diffusion of electrolyte and facilitates the mass transfer. As a result, the optimized electrode demonstrates low overpotentials of 289 and 434 m V at 500 m A/cm^(2) under alkaline conditions for hydrogen evolution reaction(HER) and oxygen evolution reaction(OER), respectively. Impressively, an electrolytic water splitting cell assembled by bifunctional a-Co Ni S/NF operates with a low cell voltage of 1.46 V@10 mA/cm^(2) and reaches 1.79 V at 500 mA/cm^(2). The strategy sheds light on a competitive platform for the reasonable design of non-precious-metal electrocatalysts under high current density.

关键词： Electrocatalysts Metal-organic frameworks Amorphous High current density Overall water splitting

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Epidemic intelligence trinity: Detection, risk assessment, and early warning

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中华医学杂志(英文版) 2024年第11期137卷 2023 Sep 27页

作者： Zhang Ting Feng Luzhao Lai shengjie peng Zhihang Lan Yajia Yang Weizhong Department of Infectious Diseases School of Population Medicine and Public Health Chinese Academy of Medical Science &amp Peking Union Medical College Beijing China WorldPop School of Geography and Environmental Science University of Southampton Southampton SO1BJ UK Department of Epidemiology and Health Statistics School of Public Health Nanjing Medical University Nanjing Jiangsu China Department of Occupational Health and Environmental Health West China School of Public Health Sichuan University Chengdu Sichuan China

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Electrospun CuFe_2O_4 nanotubes as anodes for high-performance lithium-ion batteries

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Journal of Energy Chemistry 2014年第3期23卷 301-307页

作者： shengjie peng Linlin Lia Madhavi Srinivasan School of Materials Science and Engineering Nanyang Technological University TUM-CREATE Center for Electromobility Nanyang Technological University

Herein,we report on the synthesis and lithium storage properties of electrospun one-dimensional（1D） CuFe2O4 nanomaterials.1D CuFe2O4nanotubes and nanorods were fabricated by a single spinneret electrospinning method followed by thermal decomposition for removal of polymers from the precursor fibers.The as-prepared CuFe2O4 nanotubes with wall thickness of 50 nm presented diameters of 150 nm and lengths up to several millimeters.It was found that phase separation between the electrospun composite materials occured during the electrospinning process,while the as-spun precursor nanofibers composed of polyacrylonitrile（PAN）,polyvinylpyrrolidone（PVP） and metal salts might possess a core-shell structure（PAN as the core and PVP/metal salts composite as the shell） and then transformed to a hollow structure after calcination.Moreover,as a demonstration of the functional properties of the 1D nanostructure.CuFe2O4 nanotubes and nanorods were investigated as anodes for lithium ion batteries（LIBs）.It was demonstrated that CuFe2O4 nanotubes not only delivered a high reversible capacity of 816 mAh·g-1 at a current density of 200 mA·g-1over 50 cycles,but also showed superior rate capability with respect to counterpart nanorods.Probably,the enhanced electrochemical performance can be attributed to its high specific surface areas as well as the unique hollow structure.

关键词： electrospinning ferrite salts one-dimensional structures nanotubes,lithium ion batteries

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Electrospun Flexible Nanofibres for Batteries:Design and Application

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Electrochemical Energy Reviews 2023年第1期6卷 464-531页

作者： P.Robert Ilango A.Dennyson Savariraj Hongjiao Huang Linlin Li Guangzhi Hu Huaisheng Wang Xiaodong Hou Byung Chul Kim Seeram Ramakrishna shengjie peng Institute for Ecological Research and Pollution Control of Plateau Lakes School of Ecology and Environmental ScienceYunnan UniversityKunming 650504YunnanChina College of Materials Science and Technology Nanjing University of Aeronautics and AstronauticsNanjing 210016JiangsuChina Institute for Energy Studies University of North DakotaGrand ForksND 58202USA Department of Advanced Components and Materials Engineering Sunchon National University255 Jungang-roSuncheon-siJeollanam-do 57922Republic of Korea Department of Mechanical Engineering Khalifa University127788 Abu DhabiUnited Arab Emirates Department of Physics PSGR Krishnammal College for WomenCoimbatoreTamil Nadu 641004India School of Chemistry and Chemical Engineering Liaocheng UniversityLiaocheng 252000LiaoningChina Mechanical Engineering National University of SingaporeSingapore 117583Singapore

Flexible and free-standing electrospun nanofibres have been used as electrode materials in electrochemical energy storage systems due to their versatile properties,such as mechanical stability,superb electrical conductivity,and high functionality.In energy storage systems such as metal-ion,metal-air,and metal-sulphur batteries,electrospun nanofibres are vital for constructing flexible electrodes and substantially enhancing their electrochemical properties.The need for flexible batteries has increased with increasing demand for new products such as wearable and flexible devices,including smartwatches and flexible displays.Conventional batteries have several semirigid to rigid components that limit their expansion in the flexible device market.The creation of flexible and wearable batteries with greater mechanical flexibility,higher energy,and substantial power density is critical in meeting the demand for these new electronic items.The implementation of carbon and carbon-derived composites into flexible electrodes is required to realize this goal.It is essential to understand recent advances and the comprehensive foundation behind the synthesis and assembly of various flexible electrospun nanofibres.The design of nanofibres,including those comprising carbon,N-doped carbon,hierarchical,porous carbon,and metal/metal oxide carbon composites,will be explored.We will highlight the merits of electrospun carbon flexible electrodes by describing porosity,surface area,binder-free and free-standing electrode construction,cycling stability,and performance rate.Significant scientific progress has been achieved and logistical challenges have been met in promoting secondary battery usage;therefore,this review of flexible electrode materials will advance this easily used and sought-after technology.The challenges and prospects involved in the timely development of carbon nanofibre composite flexible electrodes and batteries will be addressed.

关键词： Electrospinning Carbon composite Flexibility Electrode Batteries

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In situ construction of thiol-silver interface for selectively electrocatalytic CO_(2)reduction

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Nano Research 2022年第4期15卷 3283-3289页

作者： Ying Chen Feng Hu Yanan Hao Yonghan Wang Yaoyi Xie Hui Wang Lijie Yin Deshuang Yu Hongchao Yang Jun Ma Dan Kai Linlin Li shengjie peng College of Materials Science and Technology Nanjing University of Aeronautics and AstronauticsNanjing 210016China CAS Key Laboratory of Nano-Bio Interface Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China Institute of Materials Research and Engineering(IMRE) Singapore 138634Singapore Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) College of ChemistryNankai UniversityTianjin 300071China

Electrochemical CO_(2)reduction(ECR)is one of the most effective methods to obtain carbonaceous chemicals and reduce greenhouse gases passingly under the ambient condition.However,efficient electrocatalysts featured with high selectivity and stability are still lacking.A novel molecule-mediated Ag electrocatalyst with capped thiols is rationally designed for high-performance ECR.The thiol-capped and carbon-supported Ag nanostructures(Ag-TC)are formed by in situ electrochemical reduction from three-dimentional(3D)Ag-thiol metal-organic compound with cysteine as the anchor agent and carbon source.Ag-TC exhibits high selectivity and stability for CO_(2)conversion to CO(86.7%),which is more catalytically active than that of common Ag nanoparticles.The function of thiols for ECR is proved by replacing cysteine with alanine without thiol group.Meanwhile,alternatively replacing and removing the surface molecules on the Ag foil further demonstrate the effct of thiols.This work enlightens the promise of in situ construction method for molecule capped metal electrocatalyst towards selective and stable ECR.

关键词： electrochemical CO_(2)reduction molecule-mediated catalyst thiols Ag nanoparticle

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Self-rechargeable energizers for sustainability

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eScience 2022年第4期2卷 347-364页

作者： JinKiong Ling Ria Kunwar Linlin Li shengjie peng Izan Izwan Misnon Mohd Hasbi Ab Rahim Chun-Chen Yang Rajan Jose Center for Advanced Intelligent Materials Universiti Malaysia Pahang26300KuantanPahang Faculty of Industrial Sciences and Technology Universiti Malaysia Pahang26300KuantanPahang College of Material Science and Technology Nanjing University of Aeronautics and AstronauticsNanjing210016 Battery Research Center for Green Energy(BRCGE) Ming Chi University of Technology24301New Taipei City Department of Chemical Engineering Ming Chi University of Technology24301New Taipei City Department of Chemical and Materials Engineering Chang Gung UniversityKwei-shan333Taoyuan

Electrical energy generation and storage have always been complementary to each other but are often disconnected in practical electrical appliances.Recently,efforts to combine both energy generation and storage into self-powered energizers have demonstrated promising power sources for wearable and implantable electronics.In line with these efforts,achieving self-rechargeability in energy storage from ambient energy is envisioned as a tertiary energy storage(3rd-ES)phenomenon.This review examines a few of the possible 3rd-ES capable of harvesting ambient energy(photo-,thermo-,piezo-,tribo-,and bio-electrochemical energizers),focusing also on the devices'sustainability.The self-rechargeability mechanisms of these devices,which function through modifications of the energizers’constituents,are analyzed,and designs for wearable electronics are also reviewed.The challenges for self-rechargeable energizers and avenues for further electrochemical performance enhancement are discussed.This article serves as a one-stop source of information on self-rechargeable energizers,which are anticipated to drive the revolution in 3rd-ES technologies.

关键词： Batteries Supercapacitors Self-powered Textile electronics Yarns

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Facile Synthesis of FePS3 Nanosheets@MXene Composite as a High-Performance Anode Material for Sodium Storage

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Nano-Micro Letters 2020年第4期12卷 109-120页

作者： Yonghao Ding Yu Chen Na Xu Xintong Lian Linlin Li Yuxiang Hu shengjie peng Jiangsu Key Laboratory of Materials and Technology for Energy Conversion College of Materials Science and TechnologyNanjing University of Aeronautics and AstronauticsNanjing 210016People’s Republic of China Nanomaterials Centre Australian Institute for Bioengineering and Nanotechnologyand School of Chemical EngineeringThe University of QueenslandBrisbaneQLD 4072Australia

Searching for advanced anode materials with excellent electrochemical properties in sodium-ion battery is essential and imperative for next-generation energy storage system to solve the energy shortage problem.In this work,two-dimensional(2D)ultrathin FePS3 nanosheets,a typical ternary metal phosphosulfide,are first prepared by ultrasonic exfoliation.The novel 2D/2D heterojunction of FePS3 nanosheets@MXene composite is then successfully synthesized by in situ mixing ultrathin MXene nanosheets with FePS3 nanosheets.The resultant FePS3 nanosheets@MXene hybrids can increase the electronic conductivity and specific surface area,assuring excellent surface and interfacial charge transfer abilities.Furthermore,the unique heterojunction endows FePS3 nanosheets@MXene composite to promote the diffusion of Na^+ and alleviate the drastic change in volume in the cyclic process,enhancing the sodium storage capability.Consequently,the few-layered FePS3 nanosheets uniformly coated by ultrathin MXene provide an exceptional reversible capacity of 676.1 mAh g^−1 at the current of 100 mA g^−1 after 90 cycles,which is equivalent to around 90.6% of the second-cycle capacity(746.4 mAh g^−1).This work provides an original protocol for constructing 2D/2D material and demonstrates the FePS3@MXene composite as a potential anode material with excellent property for sodium-ion batteries.

关键词： Anode Composite FePS3 nanosheets MXene Sodium-ion battery

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云南省某山区农村污水现状及关键处理技术

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水科学与工程技术 2024年第2期 68-71页

作者：彭圣洁万世先行数智交通科技有限公司南京210000

由于山区农村居民分布散乱,其污水排放具有分散性高、收集难、污水量较少等特点,一定程度上增加了农村污水治理的难度和成本。以云南省西翥街道山区农村为例,通过调查农村污水排放现状、污水处理设施建设和运行情况,分析该地区农村污水... 详细信息

由于山区农村居民分布散乱,其污水排放具有分散性高、收集难、污水量较少等特点,一定程度上增加了农村污水治理的难度和成本。以云南省西翥街道山区农村为例,通过调查农村污水排放现状、污水处理设施建设和运行情况,分析该地区农村污水治理存在问题,并依据农村基本特点及污水特征,提出具有针对性及可操作性的污水处理工艺,包括简单处理模式和常规处理模式,为云南省农村污水治理稳步推进提供借鉴参考。

关键词：云南省农村污水污水排放现状水处理技术

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