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Electrochemical Performance of Core-Sheath Dip-Coated Lignin Derived Carbon/Wet-Spun Graphene Electrodes for Fiber-Shaped Supercapacitors

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Journal of Donghua University(English Edition) 2021年第2期38卷 91-98页

作者： HU Wenxin LIU Yan XIANG Ruifang JING Yuanyuan XU Qingli ZHANG Juan HU Xuefeng JIN Yanhong YANG Xiaona CHENG Yu LIN Jiaxian ZHANG Kun LU Chunhong Key Laboratory of Textile Science&Technology Ministry of EducationDonghua UniversityShanghai 201620China College of Textiles Donghua UniversityShanghai 201620China

One-dimensional graphene fibers(GFs)possess excellent properties,including high electrical conductivity,good physical and chemical stability,high thermal conductivity,flexibility,*** are ideal electrode materials for fiber-shaped ***,due to the lack of an effective method to manufacture GFs with high specific capacitance,their low energy density hinders their practical ***,we decorated wet-spun graphene oxide fibers(GOFs)by dip-coating them with graphene oxide(GO)solutions containing different contents of lignin to obtain a core-sheath lignin/GO composite *** carbonization and activation,we successfully prepared lignin derived carbon/GF *** assembled fiber-shaped supercapacitors(FSSCs)exhibit a specific capacitance of 9.98 mF/cm^(2)and an energy density of 0.89μW·h/cm^(2),about 6 times of those of pure GFs(1.57 mF/cm^(2)and 0.14μW·h/cm^(2),respectively),long cycling life and cycling *** suggests that the introduction of lignin derived carbon into GFs can effectively increase the specific capacitance and the energy density of FSSCs.

关键词： wet-spinning lignin derived carbon graphene specific capacitance energy density

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Runoff components and the contributions of precipitation and temperature in a highly glacierized river basin in Central As

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Frontiers of Earth science 2023年第2期17卷 361-377页

作者： Anqian WANG Buda SU Jinlong HUANG Cheng JING Zbigniew WKUNDZEWICZ Hui TAO Mingjin ZHAN Tong JIANG College of Geography and Environment Shandong Normal UniversityJinan 250358China Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disaster/Institute for Disaster Risk Management/School of Geography Science Nanjing University of Information Science&TechnologyNanjing 210044China State Key Laboratory of Desert and Oasis Ecology Xinjiang Institute of Ecology and GeographyChinese Academy of SciencesUrumqi 830011China Institute for Agricultural and Forest Environment Polish Academy of SciencesPoznan 60809Poland Jiangxi Eco-meteorological Center Nanchang 330000China

Understanding the main drivers of runoff components and contributions of precipitation and temperature have important implications for water-limited inland basins,where snow and glacier melt provide essential inputs to surface *** quantify the impact of temperature and precipitation changes on river runoff in the Tarim River basin(TRB),the Hydrologiska Byrans Vattenbalansavdelning(HBV)-light model,which contains a glacier routine process,was applied to analyze the change in runoff *** in the headstream parts of the TRB was more sensitive to temperature than to *** the TRB,overall,rainfall generated 41.22%of the total runoff,while snow and glacier meltwater generated 20.72%and 38.06%,*** values indicate that temperature exerted more major effects on runoff than did *** compositions were different in the various subbasins and may have been caused by different glacier *** runoff volumes generated by rainfall,snowmelt,glacier melt was almost equal in the Aksu River *** the Yarkand and Hotan River subbasins,glacier meltwater was the main supplier of runoff,accounting for 46.72%and 58.73%,*** the Kaidu-Kongque River subbasin,80.86%was fed by rainfall and 19.14%was fed by *** the TRB,runoff generated by rainfall was the dominant component in spring,autumn,winter,while glacier melt runoff was the dominant component in *** in the TRB significantly increased during 1961–2016;additionally,56.49%of the increase in runoff was contributed by temperature changes,and 43.51%was contributed by precipitation *** spring,the runoff increase in the TRB was mainly caused by the precipitation increase,opposite result in summer and *** of temperature was negative in *** findings have important implications for water resource management in high mountainous regions and for similar river basins in which melting glaciers strongly impact the hydrological

关键词： runoff components glacier meltwater contribution HBV-light model Tarim River basin

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Effects of eco-Friendly Carrier on Low-Temperature Dyeing of Recycled Polyester Knit Fabrics

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Journal of Donghua University(English Edition) 2021年第4期38卷 283-288页

作者： MA Yanxue YIN Yanhua ZHANG Ruiyun LIU Liu ZHAO Shuyuan WANG Ni WANG Xueli Key Laboratory of Textile Science&Technology Ministry of EducationDonghua UniversityShanghai 201620China College of Textiles Donghua UniversityShanghai 201620China Innovation Center for Textile Science and Technology Donghua UniversityShanghai 201620China

This work focused on effects of an eco-friendly carrier JYK on thermal properties,dye uptake,color yield(K/S values)and color fastness of recycled polyester knit *** study also explored optimization of the low-temperature carrier(LTC)dyeing and compared its dyeing performance to the high-temperature and high-pressure(HTHP)*** showed that the eco-friendly carrier JYK had an obvious plasticizing effect on recycled polyester,which significantly reduced the glass transition temperature,thereby reducing the dyeing temperature and benefiting low-temperature *** optimal dyeing conditions were determined as follows:the disperse dye was 2%on weight of fabric(owf)and the eco-friendly carrier JYK was 2%owf at 98℃dyeing temperature for 60 *** with the HTHP dyeing,there was no significant difference in the K/S values and color fastness of recycled polyester fabrics dyed in the low-temperature method which demonstrated that the low-temperature method could be totally *** study indicated that the low-temperature dyeing with a carrier JYK could be an effective and sustainable method for dyeing recycled polyester.

关键词： recycled polyester eco-friendly carrier low-temperature dyeing

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Electrospinning of Neat Graphene Nanofbers

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Advanced Fiber Materials 2022年第2期4卷 268-279页

作者： Zhanpo Han Jiaqing Wang Senping Liu Qinghua Zhang Yingjun Liu Yeqiang Tan Shiyu Luo Fan Guo Jingyu Ma Peng Li Xin Ming Chao Gao Zhen Xu MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringKey Laboratory of Adsorption and Separation Materials and Technologies of Zhejiang ProvinceZhejiang University38 Zheda RoadHangzhou 310027People’s Republic of China State Key Laboratory for Modifcation of Chemical Fibers and Polymer Materials Donghua UniversityShanghai 200051People’s Republic of China State Key Laboratory of Bio-Fibers and Eco-Textiles Collaborative Innovation Center of Marine Biobased Fiber and Ecological Textile TechnologySchool of Materials Science and EngineeringQingdao UniversityQingdao 266071People’s Republic of China

Macroscopic assembly of graphene sheets has renovated the preparation of neat carbonaceous fbers with integrating high performance and superior functionalities,beyond the pyrolysis of conventional polymeric *** date,graphene microfbers by the liquid crystalline wet-spinning method have been ***,how to reliably prepare continuous neat graphene nanofbers remains ***,we present the electrospinning of neat graphene nanofbers enabled by modulating colossally extensional fow state of graphene oxide liquid *** use polymer with mega molecular weight as transient additives to realize the colossal extensional fow and *** neat graphene nanofbers feature high electronic quality and crystallinity and exhibit high electrical conductivity of 2.02×10^(6) S/m that is to be comparable with single crystal graphite *** electrospinning of graphene nanofbers was extended to prepare large-area fabric with high fexibility and superior specifc electrical/thermal *** electrospinning of graphene nanofbers opens the door to nanofbers of rich two-dimensional sheets and the neat graphene nanofbers may grow to be a new species after conventional carbonaceous nanofbers and whiskers in broad functional applications.

关键词： Electrospinning Graphene nanofber Functional fabrics

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Biogenic volatile organic compound emissions from leaves and fruits of apple and peach trees during fruit development

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Journal of Environmental sciences 2021年第10期33卷 152-163页

作者： Shuangjiang Li Xiangyang Yuan Yan Xu Zhengzhen Li Zhaozhong Feng Xu Yue Elena Paoletti Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control(AEMPC)School of Environmental Science and EngineeringNanjing University of Information Science&TechnologyNanjing 210044China Key Laboratory of Agrometeorology of Jiangsu Province School of Applied MeteorologyNanjing University of Information Science&TechnologyNanjing 210044China State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Institute of Research on Terrestrial Ecosystems National Council of ResearchVia Madonna del Piano 1050019 Sesto FiorentinoFlorenceItaly

Biogenic volatile organic compounds(BVOCs)are widely involved in a variety of atmospheric chemical processes due to their high reactivity and species *** date,however,research on BVOCs in agroecosystems,particularly fruit trees,remains scarce despite their large cultivation area and economic *** emissions from different organs(leaf or fruit)of apple and peach trees were investigated throughout the stages of fruit development(FS,fruit swelling;FC,fruit coloration;FM,fruit maturity;and FP,fruit postharvest)using a proton-transfer-reaction mass *** indicated that methanol was the most abundant compound emitted by the leaf(apple tree leaf 492.5±47.9 ng/(g·hr),peach tree leaf 938.8±154.5 ng/(g·hr)),followed by acetic acid and green leaf *** the above three compounds,acetaldehyde had an important contribution to the emissions from the ***,the total BVOCs(sum of eight compounds studied in this paper)emitted by both leaf and fruit gradually decreased along the fruit development,although the effect was significant only for the *** leaf(2020.8±258.8 ng/(g·hr))was a stronger BVOC emitter than the fruit(146.0±45.7 ng/(g·hr))(P=0.006),and there were no significant differences in total BVOC emission rates between apple and peach *** findings contribute to our understanding on BVOC emissions from different plant organs and provide important insights into the variation of BVOC emissions across different fruit developmental stages.

关键词： Biogenic volatile organic compounds(BVOCs) Oxygenated VOCs(OVOCs) Fruit trees

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Polypyrrole-Coated Zein/Epoxy Ultrafine Fiber Mats for Electromagnetic Interference Shielding

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Journal of Donghua University(English Edition) 2023年第4期40卷 351-356页

作者：丁润龙戚瑞瑞刘飞刘万双张礼颖蒋秋冉 Key Laboratory of Textile Science&Technology Ministry of EducationDonghua UniversityShanghai 201620China College of Textiles Donghua UniversityShanghai 201620China Center for Civil Aviation Composites Donghua UniversityShanghai 201620China Shanghai Collaborative Innovation Center of High Performance Fibers and Composites(Province-Ministry Joint) Donghua UniversityShanghai 201620China

To reduce the environmental pollution and meet the needs for wearable electronic devices, new requirements for electromagnetic interference(EMI) shielding materials include flexibility, biodegradability, and biocompatibility. Herein, we reported a polypyrrole-coated zein/epoxy(PPy/ZE) ultrafine fiber mat which was inherently biodegradable and skin-friendly. In addition, it could maintain its ultrafine fibrous structure after coating, which could provide the mat with mechanical compliance, high porosity, and a large specific area for high EMI shielding. With the assistance of the epoxide cross-linking, the breaking stresses of the PPy/ZE fiber mats could achieve 3.3 MPa and 1.4 MPa and the strains were 40.1% and 83.0% in dry and wet states, respectively, which met the needs of various wearable electronic devices. Along with the extension in the PPy treatment duration, more PPy was loaded on the fiber surfaces, which formed more integrated and conductive paths to generate increasing conductivities up to 401.76 S·m^(-1). Moreover, the EMI shielding performance was raised to 26.84 dB. The biobased mats provide a green and efficient choice for EMI shielding materials, which may be a promising strategy to address EMI problems in multiple fields.

关键词： polypyrrole(PPy) zein ultrafine fiber mat electromagnetic interference(EMI)shielding electrical conductivity

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Chemical characterization and source identification of PM_(2.5) in Luoyang after the clean air actions

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Journal of Environmental sciences 2022年第5期34卷 265-276页

作者： Min Xu Zirui Liu Bo Hu Guangxuan Yan Jianan Zou Shuman Zhao Jingxiang Zhou Xianhui Liu Xueping Zheng Xiaoyan Zhang Jing Cao Mengshuang Guan Yirong Lv Yanyun Zhang State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry(LAPC) Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China University of the Chinese Academy of Sciences Beijing 100049China Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control Henan Key Laboratory for Environmental Pollution ControlSchool of EnvironmentHenan Normal UniversityXinxiang 453007China Luoyang Eco-Environmental Monitoring Center of Henan Province Luoyang 471002China Luoyang Radiation Environment Service Office Luoyang 471002China 3 Clear Science&Technology Co. LtdBeijing 100029China

Luoyang is a typical heavy industrial city in China,with a coal-dominated energy structure and serious air *** the implementation of the clean air actions,the physic-ochemical characteristics and sources of PM_(2.5) have changed.A comprehensive study of PM_(2.5) was conducted from October 16,2019 to January 23,2020 to evaluate the effectiveness of previous control measures and further to provide theory basis for more effective policies in the *** showed that the aerosol pollution in Luoyang in autumn and win-ter is still serious with the average concentration of 91.1 μg/m^(3),although a large reduction(46.9%)since *** the contribution of nitrate increased from 12.5%to 25.1%and sul-fate decreased from 16.7%to 11.2%,aerosol pollution has changed from sulfate-dominate to *** NO_(3)^(-)/SO_(4)^(2-)ratio and the increasing of NO_(3)^(-)/SO_(4)^(2-)ratio with the aggravation of pollution indicating vehicle exhaust playing an increasingly important role in PM_(2.5) pollution in Luoyang,especially in the haze *** inorganic ions contributed significantly to the enhancement of PM_(2.5) during the pollution *** high value of Cl^(-)/Na^(+)and EC concentration indicate coal combustion in Luoyang is still *** top three contributor sources were secondary inorganic aerosols(33.3%),coal combus-tion(13.6%),and industrial emissions(13.4%).Close-range transport from the western and northeastern directions were more important factors in air pollution in Luoyang during the sampling *** is necessary to strengthen the control of coal combustion and reduce vehicle emissions in future policies.

关键词： Luoyang PM_(2.5) Chemical composition Source apportionment

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Preparation and Characterization of Sepiolite Microfibers with High Aspect Ratio

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Journal of Donghua University(English Edition) 2022年第6期39卷 542-548页

作者： XU Tong HU Yelei QIAN Di ZHU Yuanzhao ZHONG Yi ZHANG Linping XU Hong MAO Zhiping Key Laboratory of Science&Technology of Eco-Textile Ministry of EducationDonghua UniversityShanghai 201620China National Dyeing and Finishing Engineering Technology Research Center Donghua UniversityShanghai 201620China National Manufacturing Innovation Center of Advanced Dyeing and Finishing Technology Taian 271000China Key Laboratory of Bioorganic Phosphorus Chemistry&Chemical Biology Ministry of EducationDepartment of ChemistryTsinghua UniversityBeijing 100084China Sino-German Engineering College Shanghai Technical Institute of Electronics&InformationShanghai 201411China

It is difficult to access exfoliated sepiolite(Sep)fibers with high aspect ratio from Sep *** traditional method used to purify Sep ore also reduces its aspect *** this study,impurities in the Sep ore were removed by acid activation followed by a cetyltrimethylammonium chloride(C16)treatment to organically modify the purified Sep by cation ***,the organically-modified Sep(O-Sep)was stripped and processed by an ultrasonic cell crusher to obtain Sep microfibers at a specific frequency for a given *** Sep samples had relatively high aspect ratio,compared with the Sep fibers gotten by traditional *** electron microscopy(SEM)and transmission electron microscopy(TEM)demonstrate the micro-morphology of exfoliated Sep samples in an intuitive ***,pure inorganic membrane prepared only with the exfoliated Sep fibers exhibited excellent flexibility,further demonstrating the excellent properties of Sep fibers with high aspect ratio.

关键词： sepiolite microfiber high aspect ratio inorganic membrane flexibility

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Plant diversity is coupled with soil fungal diversity in a natural temperate steppe of northeastern China

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Soil ecology Letters 2022年第4期4卷 454-469页

作者： Dan Liu Guohua Liu Li Chen Wangya Han Dongbo Wang Institute of Qinghai-Tibetan Plateau Southwest Minzu UniversityChengdu 610041China State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China Torch High Technology Industry Development Center Ministry of Science&TechnologyBeijing 100049China Institute of Ecology School of Applied MeteorologyNanjing University of Information Science&TechnologyNanjing 210044China Monitoring Station for Eco-environment of Hulunbeir Hulunbeir 021000China

Soil fungi and aboveground plant play vital functions in terrestrial ecosystems,while the relationship between aboveground plant diversity and the unseen soil fungal diversity remains *** established 6 sites from the west to the east of the temperate steppe that vary in plant diversity(plant species richness:7-32)to explore the relationship between soil fungal diversity and aboveground plant *** fungal community was characterized by applying 18S rRNA gene sequencing using MiSeq PE300 and aligned with Silva 132 *** a result,soil fungal community was predominately composed of species within the Ascomycota(84.36%),Basidiomycota(7.22%)and Mucoromycota(6.44%).Plant species richness occupied the largest explanatory power in structuring soil fungal community(19.05%–19.78%).The alpha(α)diversity of the whole soil fungi and Ascomycota showed a hump-backed pattern with increasing plant species richness,and the beta(β)diversity of the whole soil fungi and Ascomycota increased with increasing plantβ*** results indicated that soil fungi and external resources were well balanced at the 20-species level of plant and the sites were more distinct in the composition of their plant communities also harbored more distinct soil fungal ***,plant diversity could predict both soil fungalαandβdiversity in the temperate steppe of northeastern China.

关键词： Temperate steppe Sequencing Plant diversity Soil fungal diversity

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Metal‐organic framework‐derived multifunctional photocatalysts

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Chinese Journal of Catalysis 2022年第4期43卷 971-1000页

作者： Yaping Zhang Jixiang Xu Jie Zhou Lei Wang State Key Laboratory Base of Eco‐chemical Engineering Qingdao University of Science and TechnologyQingdao 266042ShandongChina College of Chemistry and Molecular Engineering Qingdao University of Science&TechnologyQingdao 266042ShandongChina College of Environment and Safety Engineering Qingdao University of Science and TechnologyQingdao 266042ShandongChina

Metal‐organic framework(MOF)‐derived nanomaterials have attracted widespread attention,because the excellent features,such as high surface area,porosity and tunable properties are inherited from ***,the derivatives avoid the poor conductivity and stability of ***‐derived nanomaterials can easily be regulated by a specific selection of metal nodes and organic linkers,resulting in multifunctionality in *** derivatives can be used not only as semiconductor photocatalysts,but also as co‐catalysts for photocatalytic hydrogen evolution,CO_(2) reduction,pollutants degradation,*** review focuses on the multifunctional applications of MOF derivatives in the field of *** researches in recent years are analyzed and summarized from the aspects of preparation,modification and application of MOF *** the end of the review,the development and challenges of MOF derivatives applied in photocatalysis in the future are put forward,in order to provide more references for further research in this field and bring new inspiration.

关键词： MOF‐derived nanomaterials Semiconductor photocatalyst Cocatalyst H_(2)evolution CO_(2)reduction Pollution degradation

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