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Adsorption of typical NDMA precursors by superfine powdered activated carbon:Critical role of particle size reduction

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Journal of Environmental Sciences 2025年第1期147卷 101-113页

作者： ying Wang Zhichen Zhang Zhihang yin Jun Wang Xiaojian Zhang chao chen State Key Joint Laboratory of Environmental Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China Research Institute for Environmental Innovation(Suzhou) TsinghuaSuzhou 215163China

Control of N-nitrosodimethylamine(NDMA)in drinking water could be achieved by removing its precursors as one practical ***,superfine powdered activated carbons with a diameter of about 1μm(SPACs)were successfully prepared by grinding powdered activated carbon(PAC,D50=24.3μm)and applied to remove model NDMA precursors,***(RAN)and nizatidine(NIZ).Results fromgrain diameter experiments demonstrated that the absorption velocity increased dramatically with decreasing particle size,and the maximum increase in k2 was 26.8-folds for RAN and 33.4-folds for ***,kinetic experiments explained that rapid absorption could be attributed to the acceleration of intraparticle diffusion due to the shortening of the diffusion ***,performance comparison experiments suggested that the removal of RAN and NIZ(C_(0)=0.5 mg/L)could reach 61.3%and 60%,respectively,within 5 min,when the dosage of SAPC-1.1(D_(50)=1.1μm)was merely 5 mg/L,while PAC-24.3 could only eliminate 17.5%and 18.6%.The adsorption isotherm was well defined by Langmuir isotherm model,indicating that the adsorption of RAN/NIZ was a monolayer coverage *** adsorption of RAN or NIZ by SAPC-1.1 and PAC-24.3 was strongly pH dependent,and high adsorption capacity could be observed under the condition of pH>pk_(a)+*** coexistence of humic acid(HA)had no significant effect on the adsorption performance because RAN/NIZ may be coupled with HA and removed *** coexistence of anions had little effect on the adsorption *** study is expected to provide an alternative strategy for drinking water safety triggered by NDMA.

关键词： Adsorption NDMA Kinetics Superfine powdered activated carbon Intraparticle diffusion Drinking water

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A Review on Thermal Management of Li-ion Battery:from Small-Scale Battery Module to Large-Scale Electrochemical Energy Storage Power Station

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Journal of Thermal Science 2025年第1期34卷 1-23页

作者： chen Zhifeng JIA Li yin Liaofei DANG chao REN Honglei ZHANG Zhiqiang Beijing Key Laboratory of Flow and Heat Transfer of Phase Changing in Micro and Small Scale School of MechanicalElectronic and Control EngineeringBeijing Jiaotong UniversityBeijing 100044China

Li-ion battery is an essential component and energy storage unit for the evolution of electric vehicles and energy storage technology in the ***,in order to cope with the temperature sensitivity of Li-ion battery and maintain Li-ion battery safe operation,it is of great necessary to adopt an appropriate battery thermal management system(BTMS).In this paper,the current main BTM strategies and research hotspots were discussed from two aspects:small-scale battery module and large-scale electrochemical energy storage power station(EESPS).The practical application situation,advantages and disadvantages,and the future development trend of each heat dissipation method(air,liquid,PCM,heat pipe,hybrid cooling)were described in *** them,the air cooling and liquid cooling were reviewed in-depth based on the engineering *** PCM,heat pipe and hybrid cooling were reviewed extensively based on the latest *** research provides a comprehensive understanding for the BTMS in all scales.

关键词： battery thermal management cooling methods small-scale battery module large-scale electrochemical energy storage power station

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Crustal magma oxidation state and endowments in porphyry copper deposits

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Science China Earth Sciences 2025年第1期68卷 226-236页

作者： Yumin AI Massimo CHIARADIA chao WU Huayong chen Key Laboratory of Mineralogy and Metallogeny Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou510640China University of Chinese Academy of Sciences Beijing100049China Department of Earth Sciences University of GenevaGeneva1205Switzerland Guangdong Provincial Key Laboratory of Mineral Physics and Materials Guangzhou510640China

Porphyry copper deposits(PCDs)supply the majority of the world's copper(Cu)as well as significant amounts of molybdenum(Mo)and gold(Au).The formation of these deposits is controlled by a variety of geological factors,among which the magmatic oxidation is one of the focuses of current *** study investigates the redox characteristics of arc magmas by analyzing the ratio of vanadium(V)to scandium(Sc)and its correlation with the oxygen fugacity(fO2)of magmas from arcs of various crustal thicknesses *** compiled an extensive dataset of published V/Sc values and studied the partition coefficients of Vand Sc between minerals and silicate melts across various magmatic *** results demonstrate that fractional crystallization of magnetite markedly reduces V/Sc values of the residual ***,magnesium number(Mg#)at the onset of magnetite fractionation is strongly positively correlated with fO_(2)of the equilibrium *** on this,the oxidation of arc magmas from different crustal thicknesses can be *** result suggests that magmas generated in crusts thicker than 20 km tend to be more oxidized with increasing crust *** trend is attributed to enhanced intracrustal differentiation processes involving garnet and amphibole,particularly in mature island and continental *** contrast,magmas in thinner arc crusts(<20 km),which are significantly influenced by subducted slab materials,display higher oxidation states than most of their thicker crust *** findings suggest that both subduction dynamics and crustal thickness play a vital role in determining the oxidation state of arc magmas and,consequently,their capacity to generate *** oxidized,primitive arc magmas are less favorable for PCD formation due to that they tend to experience magnetite fractionation and thus sulfide saturation in the early stage of magma evolution,a process leading to copper *** the contrary,thick arcs where magnet

关键词： Magma evolution V/Sc systematics Magnetite Oxygen fugacity Porphyry copper deposits

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Current research status on the distribution and transport of micro(nano)plastics in hyporheic zones and groundwater

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Journal of Environmental Sciences 2025年第5期151卷 387-409页

作者： Dongming Zhang Qiqing chen Ting Xu Daqiang yin Key Laboratory of Yangtze River Water Environment Ministry of EducationCollege of Environmental Science and EngineeringTongji UniversityShanghai 200092China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China State Key Laboratory of Estuarine and Coastal Research East China Normal UniversityShanghai 200241China

Micro(nano)plastics,as an emerging environmental pollutant,are gradually discovered in hyporheic zones and *** studies have focused on the origin and spatial/temporal distribution of micro(nano)plastics in regional groundwater,together with the influence of their properties and effects of environmental factors on their ***,the transport of micro(nano)plastics in the whole hyporheic zone-groundwater system and the behavior of co-existing substances still lack a complete theoretical *** provide systematic theoretical support for that,this review summarizes the current pollution status of micro(nano)plastics in the hyporheic zone-groundwater system,provides a comprehensive introduction of their sources and fate,and classifies the transport mechanisms into mechanical transport,physicochemical transport and biological processes assisted transport fromthe perspectives ofmechanical stress,physicochemical reactions,and bioturbation,***,this review proposes to advance the understanding of the multi-dimensional hydrosphere transport of micro(nano)plastics centered on groundwater,themicroorganisms-mediated synergistic transformation and co-transport involving the intertidal ***,this review systematically dissects the presence and transport cycles of micro(nano)plastics within the hyporheic zone-groundwater system and proposes prospects for future studies based on the limitations of current studies.

关键词： Micro(nano)plastics Groundwater Hyporheic zone Transport mechanisms Abundance

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Enhanced Cd^(2+)removal from aqueous solution using olivine and magnesite combination:New insights into the mechanochemical synergistic effect

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Journal of Environmental Sciences 2025年第1期147卷 714-725页

作者： Xiaofang chen chao Wang Min chen Huimin Hu Junwei Huang Ting Jiang Qiwu Zhang School of Resources&Environmental Engineering Wuhan University of TechnologyWuhan 430070China State Environmental Protection Key Laboratory of Water Environmental Simulation and Pollution Control South China Institute of Environmental SciencesMinistry of Ecology and EnvironmentGuangzhou 510655China

In this study,an efficient stabilizer material for cadmium(Cd^(2+))treatment was successfully prepared by simply co-milling olivine with *** analyticalmethods including XRD,TEM,SEM and FTIR,combined with theoretical calculations(DFT),were used to investigate mechanochemical interfacial reaction between twominerals,and the reaction mechanism of Cd removal,with ion exchange between Cd^(2+)and Mg^(2+)as the main pathway.A fixation capacity of Cd^(2+)as high as 270.61 mg/g,much higher than that of the pristine minerals and even the individual/physical mixture of milled olivine and magnesite,has been obtained at optimized conditions,with a neutral pH value of the solution after treatment to allow its direct *** as-proposed Mg-based stabilizer with various advantages such as cost benefits,green feature etc.,will boosts the utilization efficiency of naturalminerals over the elaborately prepared adsorbents.

关键词： Olivine Magnesite Interface reaction Mechanochemical activation Cadmium removal

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Support electron inductive effect of Pd-Mn/Ni foam catalyst for robust electrocatalytic hydrodechlorination

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Journal of Environmental Sciences 2025年第3期149卷 288-300页

作者： Junxi Li chao Feng Chong chen Yuan Pan Yunqi Liu State Key Laboratory of Heavy Oil Processing China University of Petroleum(East China)Qingdao 266580China Key Laboratory of Biofuels Qingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of SciencesQingdao 266101China

Structural regulation of Pd-based electrocatalytic hydrodechlorination(EHDC)catalyst for constructing high-efficient cathode materials with low noble metal content and high atom utilization is crucial but still ***,a support electron inductive effect of Pd-Mn/Ni foam catalyst was proposed via in-situ Mn doping to optimize the electronic structure of the Ni foam(NF),which can inductive regulation of Pd for improving the EHDC *** mass activity and current efficiency of Pd-Mn/NF catalyst are 2.91 and 1.34 times superior to that of Pd/NF with 2,4-dichlorophenol as model compound,*** Mn-doped interlayer optimized the electronic structure of Pd by bringing the d-state closer to the Fermi level than Pd on the NF surface,which optimizied the binding of EHDC ***,the Mn-doped interlayer acted as a promoter for generating H∗and accelerating the EHDC *** work presents a simple and effective regulation strategy for constructing high-efficient cathode catalyst for the EHDC of chlorinated organic compounds.

关键词： Palladium Structural Regulation Electrocatalytic hydrodechlorination Support electron inductive effect

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Unraveling the reaction mechanism of high reversible capacity CuP_(2)/C anode with native oxidation PO_(x) component for sodium-ion batteries

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Chinese Chemical Letters 2025年第1期36卷 574-578页

作者： Huixin chen chen Zhao Hongjun Yue Guiming Zhong Xiang Han Liang yin Ding chen State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body College of Mechanical and Vehicle EngineeringHunan UniversityChangsha 410082China CAS key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China College of Materials Science and Engineering Co-Innovation Center of Efficient Processing and Utilization of Forest ResourcesNanjing Forestry UniversityNanjing 210037China Laboratory of Advanced Spectro-electrochemistry and Li-ion Batteries Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China Institute of Physics Chinese Academy of SciencesBeijing 100190China Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials Xiamen Institute of Rare Earth MaterialsHaixi institutesChinese Academy of SciencesXiamen 361021China

Phosphorus-based anode is a promising anode for sodium-ion batteries(SIBs)due to its high specific capacity,however,suffers from poor electronic conductivity and unfavorable electrochemical *** metals such as copper(Cu)into phosphorus has been demonstrated to not only improve the electronic conductivity but also accommodate the volume change during cycling,yet the underline sodiation mechanism is not ***,take a copper phosphide and reduced graphene oxide(CuP_(2)/C)composite as an example,which delivers a high reversible capacity of>900 mAh/***,it is revealed that the native oxidation PO_(x)components of the CuP_(2)/C composite show higher electrochemical reversibility than the bulk Cu P_(2),based on a quantitative analysis of high-resolution solid-state^(31)P NMR,ex-situ XPS and synchrotron X-ray diffraction characterization *** sodiation products Na_(3)PO_(4) and Na_(4)P_(2)O_(7) derived from PO_(x) could react with Na-P alloys and regenerate to PO_(x) during charge process,which probably accounts for the high reversible capacity of the Cu P_(2)/C *** findings also illustrate that the phosphorus transforms into nanocrystalline Na_(3)P and Na_(x)P alloys,which laterally shows crystallization-amorphization evolution process during cycling.

关键词： CuP_(2)/C composite POx component Reaction mechanism Solid-state NMR Sodium-ion batteries

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Effect of Culture Supernatant Derived from Trichophyton Rubrum Grown in the Nail Medium on the Innate Immunity-related Molecules of HaCaT

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Chinese Medical Journal 2015年第22期128卷 3094-3100页

作者： Xin-Zhu Huang Pan-Pan Liang Han Ma Jin-Ling Yi Song-chao yin Zhi-Rui chen Mei-Rong Li Wei Lai Jian chen Department of Dermatology the Third Affiliated Hospital of Sun Yat-Sen University Guangzhou Guangdong 510630 China

Background： Trichophyton rubrum is superficial fungi characteristically confined to dead keratinized tissues. These observations suggest that the soluble components released by the fungus could influence the host immune response in a cell in contact-free manner. Therefore, this research aimed to analyze whether the culture supernatant derived from T. rubrum grown in the nail medium could elicit the immune response of keratinocyte effectively. Methods： The culture supernatants of two strains （T1a, TXHB） were compared for the β-glucan concentrations and their capacity to impact the innate immunity of keratinocytes. The β-glucan concentrations in the supernatants were determined with the fungal G-test kit and protein concentrations with bicinchoninic acid protein quantitative method, then HaCaT was stimulated with different concentrations of culture supernatants by adopting morphological method to select a suitable dosage. Expressions of host defense genes were assessed by quantitative polymerase chain reaction after the HaCaT was stimulated with the culture supernatants. Data were analyzed with one-way analysis of variance, followed by the least significant difference test. Results： The T. rubrum strains （T1a and TXHB） released β-glucan of 87.530 ± 37.581 pg/ml and 15.747 ± 6.453 pg/ml, respectively into the media. The messenger RNA （mRNA） expressions of toll-like receptor-2 （TLR2）, TLR4, and CARD9 were moderately up-regulated in HaCaT within 6-h applications of both supernatants. HaCaT cells were more responsive to Tla than TXHB. The slight increase of dendritic cells-specific intercellular adhesion molecule 3-grabbing nonintegrin expression was faster and stronger, induced by T1a supematant than TXHB. The moderate decreases of RNase 7, the slight up-regulations of Dectin-1 and interleukin-8 at the mRNA level were detected only in response to T la rather than TXHB After a long-time contact, all the elevated defense genes decreased alter 24 h. Conclusion： The culture

关键词： Innate Immunity Keratinocytes Pattern Recognition Receptors Trichophyton

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Integration of wearable electronics and heart rate variability for human physical and mental well-being assessment

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Journal of Semiconductors 2025年第1期46卷 58-76页

作者： Feifei yin Jian chen Haiying Xue Kai Kang Can Lu Xinyi chen Yang Li East China Institute of Photo-Elextro ICs Suzhou 215163China Bengbu Representative Department Bengbu 233000China School of Integrated Circuits Shandong UniversityJinan 250101China

Heart rate variability(HRV)that can reflect the dynamic balance between the sympathetic nervous and parasympathetic nervous of human autonomic nervous system(ANS)has attracted considerable ***,traditional electrocardiogram(ECG)devices for HRV analysis are bulky,and hard wires are needed to attach measuring electrodes to the chest,resulting in the poor wearable experience during the long-term *** with that,wearable electronics enabling continuously cardiac signals monitoring and HRV assessment provide a desirable and promising approach for helping subjects determine sleeping issues,cardiovascular diseases,or other threats to physical and mental *** now,significant progress and advances have been achieved in wearable electronics for HRV monitoring and applications for predicting human physical and mental *** this review,the latest progress in the integration of wearable electronics and HRV analysis as well as practical applications in assessment of human physical and mental health are *** commonly used methods and physiological signals for HRV analysis are briefly ***,we highlighted the research on wearable electronics concerning HRV assessment and diverse applications such as stress estimation,drowsiness detection,***,the current limitations of the integrated wearable HRV system are concluded,and possible solutions in such a research direction are outlined.

关键词： wearable electronics HRV analysis physical and mental well-being machine learning stress detection

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Novel Low-Carbon Optimal Operation Method for Flexible Distribution Network Based on Carbon Emission Flow

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Energy Engineering 2025年第2期122卷 785-803页

作者： chao Gao Kai Niu Wenjing chen Changwei Wang Yabin chen Rui Qu Guangdong-Hong Kong-Macao Greater Bay Area Construction Promotion Office of Guangdong Power Grid Co. Ltd.Guangzhou510030China School of Electrical Engineering Northeast Electric Power UniversityJilin132012China School of Electrical Engineering Fuzhou UniversityFuzhou350116China

With the widespread implementation of distributed generation(DG)and the integration of soft open point(SOP)into the distribution network(DN),the latter is steadily transitioning into a flexible distribution network(FDN),the calculation of carbon flow distribution in FDN is more *** this end,this study constructs a model for low-carbon optimal operations within the FDN on the basis of enhanced carbon emission flow(CEF).First,the carbon emission characteristics of FDNs are scrutinized and an improved method for calculating carbon flow within these networks is ***,a model for optimizing low-carbon operations within FDNs is formulated based on the refined CEF,which merges the specificities of DG and intelligent ***,this model is scrutinized using an upgraded IEEE 33-node distribution system,a comparative analysis of the cases reveals that when DG and SOP are operated in a coordinated manner in the FDN,with the cost of electricity generation was reduced by 40.63 percent and the cost of carbon emissions by 10.18 *** findings indicate that the judicious optimization of areas exhibiting higher carbon flow rates can effectively enhance the economic efficiency of DN operations and curtail the carbon emissions of the overall network.

关键词： Flexible distribution network carbon emission flow distributed generation soft open points

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