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Biomimetic MXene membranes with negatively thermo-responsive switchable 2D nanochannels for graded molecular sieving

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Green Energy & environment 2024年第6期9卷 1058-1067页

作者： Yi wang Yangyang wang Chang Liu Dongjian shi Weifu Dong Baoliang Peng Liangliang Dong Mingqing {3. The key laboratory of Synthetic and Biological Colloids Ministry of EducationSchool of Chemical and Material EngineeringJiangnan UniversityWuxiJiangsu214122China International Research Center for Photo-responsive Molecules and Materials Jiangnan UniversityWuxiJiangsu214122China Research institute of Petroleum Exploration&Development(RIPED) PetroChina/Key Laboratory of Oilfield ChemistryCNPCBeijing100083China

Negatively thermo-responsive 2D membranes,which mimic the stomatal opening/closing of plants,have drawn substantial interest for tunable molecular separation ***,these membranes are still restricted significantly on account of low water permeability and poor dynamic tunability of 2D nanochannels under temperature ***,we present a biomimetic negatively thermo-responsive MXene membrane by covalently grafting poly(N-isopropylacrylamide)(PNIPAm)onto MXene *** uniformly grafted PNIPAm polymer chains can enlarge the interlayer spacings for increasing water permeability while also allowing more tunability of 2D nanochannels for enhancing the capability of gradually separating multiple molecules of different *** expected,the constructed membrane exhibits ultrahigh water permeance of 95.6 L m^(-2) h^(-1) bar^(-1) at 25℃,which is eight-fold higher than the state-of-the-art negatively thermoresponsive 2D ***,the highly temperature-tunable 2D nanochannels enable the constructed membrane to perform excellent graded molecular sieving for dye-and antibiotic-based ternary *** strategy provides new perspectives in engineering smart 2D membrane and expands the scope of temperature-responsive membranes,showing promising applications in micro/nanofluidics and molecular separation.

关键词： Thermo-responsive 2D membrane MXene nanosheets PNIPAm Temperature-tunable 2D nanochannels Graded molecular sieving

The 2022 report of synergetic roadmap on carbon neutrality and clean air for China:Accelerating transition in key sectors

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environmental Science and Ecotechnology 2024年第3期19卷 4-18页

作者： Yu Lei Zhicong Yin Xi Lu Qiang Zhang Jicheng Gong Bofeng Cai Cilan Cai Qimin Chai Huopo chen Renjie chen shi chen Wenhui chen Jing cheng Xiyuan Chi Hancheng Dai Xiangzhao feng Guannan Geng Jianlin Hu Shan Hu Cunrui Huang Tiantian Li Wei Li Xiaomei Li Jun Liu Xin Liu Zhu Liu Jinghui Ma Yue Qin Dan Tong Xuhui wang Xuying wang Rui wu Qingyang Xiao Yang Xie Xiaolong Xu Tao Xue Haipeng Yu Da Zhang Ning Zhang Shaohui Zhang Shaojun Zhang Xian Zhang Xin Zhang Zengkai Zhang Bo Zheng Yixuan Zheng Jian Zhou Tong Zhu Jinnan wang Kebin He Center of Air Quality Simulation and System Analysis Chinese Academy of Environmental PlanningBeijing100041China Center for Carbon Neutrality Chinese Academy of Environmental PlanningBeijing100041China key laboratory of Meteorological Disaster Ministry of Education/Joint International Research Laboratory of Climate and Environment Change(ILCEC)/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters(CIC-FEMD)Nanjing University of Information Science&TechnologyNanjing210044China State key Joint laboratory of environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing100084China institute for Carbon Neutrality Tsinghua UniversityBeijing100084China Ministry of Education key laboratory for Earth System Modelling Department of Earth System ScienceTsinghua UniversityBeijing100084China State key Joint laboratory for environment Simulation and Pollution Control College of Environmental Sciences and Engineering and Center for Environment and HealthPeking UniversityBeijing100871China National Center for Climate Change Strategy and International CooperationBeijing100035China Nansen-Zhu International Research Centre Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing100029China School of Public Health Key Lab of Public Health Safety of the Ministry of Education and Key Lab of Health Technology Assessment of the Ministry of HealthFudan UniversityShanghai200032China School of Economics and Management Beijing University of Chemical TechnologyBeijing100029China Department of Earth System Science University of CaliforniaIrvineCA92697USA National Meteorological Center China Meteorological AdministrationBeijing100081China College of environmental Sciences and engineering Peking UniversityBeijing100871China Policy Research Center for environment and Economy Ministry of Ecology and Environment of the People's Republic of ChinaBeijing100029China Jiangsu key laboratory of Atmospheric {3. Monitoring

China is now confronting the intertwined challenges of air pollution and climate *** the high synergies between air pollution abatement and climate change mitigation,the Chinese government is actively promoting synergetic control of these two *** Synergetic Roadmap project was launched in 2021 to track and analyze the progress of synergetic control in China by developing and monitoring key *** Synergetic Roadmap 2022 report is the first annual update,featuring 20 indicators across five aspects:synergetic governance system and practices,progress in structural transition,air pollution and associated weather-climate interactions,sources,sinks,and mitigation pathway of atmospheric composition,and health impacts and benefits of coordinated *** to the comprehensive review presented in the 2021 report,the Synergetic Roadmap 2022 report places particular emphasis on progress in 2021 with highlights on actions in key sectors and the relevant *** milestones include the proportion of non-fossil power generation capacity surpassing coal-fired capacity for the first time,a decline in the production of crude steel and cement after years of growth,and the surging penetration of electric ***,in 2022,China issued the first national policy that synergizes abatements of pollution and carbon emissions,marking a new era for China's pollution-carbon *** changes highlight China's efforts to reshape its energy,economic,and transportation structures to meet the demand for synergetic control and sustainable ***,the country has witnessed a slowdown in carbon emission growth,improved air quality,and increased health benefits in recent years.

关键词： Synergetic roadmap Carbon neutrality Clean air

Research on catalysis of sodium-metallochlorophylls in Ni/MH battery

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Chinese Science Bulletin 2009年第17期54卷 3005-3013页

作者： wang Fang wu feng chen {3. QIU XinPing Tianjin institute of Power Sources Tianjin 300381 China chemical engineering and environment Beijing Institute of Technology Beijing 100081 China Department of Chemistry Tsinghua University Beijing 100084 China

The effects of sodium-metallochlorophylls including sodium-iron chlorophyllin, sodium-copper chlorophyllin and sodium-magnesium chlorophyllin on performance of Ni/MH battery were investigated. The results show that sodium-iron chlorophyllin can effectively activate the gases produced during charge in Ni/MH battery, therefore reducing the reduction potential of oxygen and the oxidation potential of hydrogen, and the increased speed of inner pressure of battery is decreased significantly. With the aid of DMol3.software, the activation process of oxygen and hydrogen by sodiummetallochlorophylls was simulated and analyzed. It was found that the catalysis behavior is in agreement with the experimental results, and the activation process also gets a reasonable explanation from the calculated results.

关键词：叶绿酸铜钠催化行为氢电池镍激活过程叶绿素氧化氢还原电位

Methods for promoting electrochemical properties of LiNi_(l/3. Co_(l/3. Mn_(l/3.O_2 for lithium-ion batteries

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Chinese Science Bulletin 2013年第19期58卷 1869-1875页

作者： BAO LiYing CHE HuiQuan HU DaoZhong su yuefeng wang Zhao LI Ning {3. shi wu feng beijing key laboratory of {3. Science and engineering School of Chemical Engineering and Environment Beijing Institute of Technology National Development Center of High technology Green Materials China North Vehicle Research institute

One popular study of the recent research is to develop the cathode materials for lithium-ion batteries. As a new cathode material for lithium-ion batteries, the LiNil/3.ol/3.nl/3.2 has drawn widespread attention because of its high capacity, high cut-off voltage and high tap density. Its theoretical capacity is 277.8 mAh/g. The crystal structure of LiNil/3.ol/3.nl/3.2 is α-NaFeO 2 . The structural and morphological features of the LiNil/3.ol/3.nl/3.2 are introduced in this paper. The emphasis is to present the methods for promoting electrochemical properties. The electrochemical properties and structure characteristics are discussed. And the prospect of layered LiNil/3.ol/3.nl/3.2 is forecast in the end.

关键词：电化学性能锂离子电池晶体结构振实密度截止电压形态特征高容量

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Electrochemical performance of sulfur composite cathode materials for rechargeable lithium batteries

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Chinese chemical Letters 2009年第10期20卷 1255-1258页

作者： feng wu Sheng Xian wu Ren Jie {3. shi {3. Guo Qing wang School of chemical engineering and environment Beijing Institute of TechnologyBeijing Key Laboratory of Environmental Science and Engineering Beijing 100081 China National Development Center for High technology Green Material Beijing 100081 China

The structure and characteristic of carbon materials have a direct influence on the electrochemical performance of sulfur-carbon composite electrode materials for lithium-sulfur battery. In this paper, sulfur composite has been synthesized by heating a mixture of elemental sulfur and activated carbon, which is characterized as high specific surface area and microporous structure. The composite, contained 70% sulfur, as cathode in a lithium cell based on organic liquid electrolyte was tested at room temperature. It showed two reduction peaks at 2.05 V and 2.3. V, one oxidation peak at 2.4 V during cyclic voltammogram test. The initial discharge specific capacity was 1180.8 mAh g-1 and the utilization of electrochemically active sulfur was about 70.6% assuming a complete reaction to the product of Li2S. The specific capacity still kept as high as 720.4 mAh g^-1 after 60 cycles retaining 61% of the initial discharge capacity.

关键词： sulfur composite Cathode materials Activated carbon Electrochemical performance

Synthesis of novel nanomaterials and their application in efficient removal of radionuclides

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Science China Chemistry 2019年第8期62卷 933-967页

作者： Xiangxue wang Long chen Lin wang Qiaohui Fan Duoqiang Pan Jiaxing Li Fangting Chi Yi Xie Shujun Yu chengliang Xiao feng Luo Jun wang Xiaolin wang Changlun chen wangsuo wu Weiqun shi Shuao wang Xiangke wang key laboratory of Resources and environmental Systems Optimization Ministry of EducationCollege of Environmental Science and EngineeringNorth China Electric Power UniversityBeijing 102206China China Academy of engineering Physics Mianyang 621900China State key L aboratory of Radiation Medicine and Protection School of Radiation Medicine and ProtectionCollaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education InstitutionsSoochow UniversitySuzhou 215123China laboratory of Nuclear Energy Chemistry and key laboratory for Biomedical Effects of Nanomaterials and Nanosafety Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China key laboratory of Petroleum Resources Gansu ProvinceNorthwest Institute of Eco-Environment and Resources. Chinese Academy of SciencesLanzhou 730000China Radiochemistry laboratory School of Nuclear Science and TechnologyLanzhou UniversityLanzhou 730000China CAS key laboratory of Photovoltaic and Energy Conservation Materials. institute of Plasma Physics Chinese Academy of Sciences Hefei 230031China Fundamental Science on Nuclear Wastes and environmental Safety laboratory Southwest University of Science and Technology Mianyang 621010China State key laboratory of Nuclear Resources and environment School of BiologyChemistry and Material Science East China University of TechnologyFuzhou 344000China College of Materials Science and chemical engineering Harbin Engineering UniversityHarbin 150001China China Academy of engineering Physics Mianyang 621900China

With the development of nuclear energy, large amounts of radionuclides are inevitably released into the natural environment. It is necessary to eliminate radionuclides from wastewater for the protection of environment. Nanomaterials have been considered as the potential candidates for the effective and selective removal of radionuclides from aqueous solutions under complicated conditions because of their high specific surface area, large amounts of binding sites, abundant functional groups, pore-size controllable and easily surface modification. This review mainly summarized the recent studies for the synthesis, fabrication and surface modification of novel nanomaterials and their applications in the efficient elimination and solidification of radionuclides,and discussed the interaction mechanisms from batch experiments, spectroscopy analysis and theoretical calculations. The sorption capacities with other materials, advantages and disadvantages of different nanomaterials are compared, and at last the perspective of the novel nanomaterials is summarized.

关键词： nanomaterials radionuclides removal preconcentration interaction mechanism

新型碳材料用于固相萃取环境和食品中邻苯二甲酸酯的研究进展

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分析试验室 2024年第4期43卷 583-594页

作者：陈昊翔周远浩李顺滢王丹青石胜鹏叶宏北京食品质量与安全实验室北京工商大学轻工科学技术学院北京100048 中国轻工业酿酒分子工程重点实验室北京工商大学轻工科学技术学院北京100048 中国石油化工股份有限公司北京化工研究院北京100013

邻苯二甲酸酯类物质(PAEs)是一类对人体健康危害严重的内分泌干扰物,当前在食品和环境中的污染问题十分突出。固相萃取技术广泛应用于针对PAEs的样品前处理过程,其分离富集的关键在于固相萃取材料。随着各种吸附材料制备技术快速发展,... 详细信息

邻苯二甲酸酯类物质(PAEs)是一类对人体健康危害严重的内分泌干扰物,当前在食品和环境中的污染问题十分突出。固相萃取技术广泛应用于针对PAEs的样品前处理过程,其分离富集的关键在于固相萃取材料。随着各种吸附材料制备技术快速发展,基于新型碳材料的固相萃取技术应用日益广泛。本文对近年来新型碳材料用于固相萃取环境和食品中PAEs的应用进行了总结分析,综述了碳纳米管、石墨烯等新型碳材料作为固相萃取材料在PAEs分析检测应用中的最新进展,为该领域固相萃取材料的开发、改性和应用提供了新的研究思路和方向。

关键词：邻苯二甲酸酯碳材料固相萃取

Thermally stable Ir/Ce0.9La0.1O2 catalyst for high temperature methane dry reforming reaction

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Nano Research 2017年第2期10卷 364-380页

作者： Fagen wang Leilei Xu Weidong shi Jian Zhang Kai wu Yu Zhao Hui Li He Xing Li Guo Qin Xu Wei {3. laboratory of Energy and environment Interface engineering National University of Singapore Suzhou Research Institute Suzhou 215123 China School of Chemistry and chemical engineering Jiangsu University Zhenjiang 212013 China School of environmental Science and engineering Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Collaborative Innovation Center of the Atmospheric Environment and Equipment Technology Nanjing University of Information Science & Technology Nanjing 210044 China Department of Chemistry National University of Singapore 3 Science Drive 3 Singapore 117543 Singapore College of Chemistry and Molecular engineering Peking University Beijing 100871 China Department of Chemistry Shanghai Normal University Shanghai 200234 China Singapore-Peking University Research Center for a sustainable Low-Carbon Future I CREATE Way # 15-01 CREATE Tower Singapore 138602 Singapore

In this study, the use of a thermally stable Ir/Ce0.9La0.1O2 catalyst was investigated for the dry reforming of methane. The doping of La203.into the CeO2 lattice enhanced the chemical and physical properties of the Ir/Ce0.9La0.1O2 catalyst, such as redox properties, Ir dispersion, oxygen storage capacity, and thermal stability, with respect to the Ir/CeO2 catalyst. Hence, the Ir/Ce0.9La0.1O2 catalyst exhibits higher activity and stabler performance for the dry reforming of methane than the Ir/CeO2 catalyst. This observation can be mainly attributed to the stronger interaction between the metal and support in the Ir/Ce0.9La0.1O2 catalyst stabilizing the catalyst structure and improving the oxygen storage capacity, leading to negligible aggregation of Ir nanoparticles and the Ce0.9La0.1O2 support at high temperatures, as well as the rapid removal of carbon deposits at the boundaries between the Ir metal and the Ce0.9La0.1O2 support.

关键词： thermally stable catalyst Ir/Ce0.9La0.1O2 metal-support interaction methane dry reforming

Partitioning of rare earth elements and yttrium(REY)in five coal-fired power plants in Guizhou,Southwest China

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Journal of Rare Earths 2020年第11期38卷 1257-1264,I0005页

作者： Zhonggen Li Xinyu Li Leiming Zhang Shan Li Ji chen Xinbin feng Dongbo Zhao Qingfeng {3. Zhixi Gao Bailian Xiong College of Resources and environment Zunyi Normal UniversityZunyi 563006China State key laboratory of environmental Geochemistry Institute of GeochemistryChinese Academy of SciencesGuiyang 550081China University of Chinese Academy of Sciences Beijing 100049China Air Quality Research Division Science and Technology BranchEnvironment and Climate Change CanadaTorontoM3H 5T4Canada College of chemical engineering Huaqiao UniversityXiamen 361021China

As indispensable strategic materials for high-tech industries,rare earth elements and yttrium(REY)have become particularly important in recent years,raising the demand of developing new approaches for reclamation of REY from REY-rich materials such as coal combustion products(CCPs).In this study,five coal-fired power plants(CFPPs)in Guizhou of southwest China were selected for investigating REY concentrations of solid samples,atmospheric emissions,and recovery *** concentrations of feed fuels are higher in this study(147.2-468.6 mg/kg)than what have been reported previously for coals in China and the *** atmospheric emissions are extremely low(3..70-180.11 mg REY/t coal).REY are enriched in bottom ash and fly ash,with average of 658±296 mg/kg and maximum of 1257 mg/kg from the five *** enrichment factors(REF)of REY in bottom ash and fly ash compared with the feed fuel are 0.86-1.02 and 0.91-1.04,*** concentrations in desulfurized gypsum are very low(6-17 mg/kg),and that is mostly inherited from *** REY(Nd,Eu,Tb,Dy,Y,and Er)in bottom/fly ash account for 3.%-3.%of the total REY and the outlook coefficients(Cout1)are in the range of *** study indicates a promising prospect to reclaim REY from REYrich CCPs(bottom and fly ash)in CFPPs in Guizhou,especially in the central-north Guizhou,although such practices require further technology advancement.

关键词： REY Bottom ash Fly ash Atmospheric emissions Reclamation Rare earths