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Mechanism of combination membrane and electro-winning process on treatment and remediation of Cu^(2+) polluted water body

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Journal of Environmental Sciences 2009年第6期21卷 764-769页

作者： zhang linnan WU Yanjun QU Xiaoyan LI Zhenshan NI Jinren Department of Environmental Engineering Peking University The Key Laboratory of Water and Sediment Sciences Ministry of Education of China Beijing 100871 China Shenzhen Graduate School Peking University Shenzhen 518055 China

Mechanism of treatment and remediation of synthetic Cu^2＋ polluted water body by membrane and electro-winning combination process was *** influences of electrolysis voltage,pH,and electrolysis time on the metal recovery effciencies were *** between trans-membrane pressure drop（△P）,additions ratio,initial Cu^2＋ concentration on operating effciency,stability of membrane and the possibility of water reuse were also *** morphology of membrane and electrodes were observed using scanning electron microscopy（SEM）,the composition of surface deposits was ascertained using combined energy dispersive X-ray spectroscopy（EDX） and atomic absorption *** results showed that using low pressure reverse osmosis（LPRO）,Cu^2＋ concentration could increase from 20 to 100 mg/L or even higher in concentrated solutions and permeate water conductivity could be less than 20 μS/*** addition of sodium dodecy/sulfate sodium dodecyl sulfate improved Cu^2＋ removal effciency,while EDTA had little side *** electro-reduction process,using plante electrode cell,Cu^2＋ concentration could be further reduced to 5 mg/L,and the average current effciency ranged from 9% to 40%.Using 3D electrolysis treatment,Cu^2＋ concentration could be reduced to 0.5 mg/L with a current effciency range 60%-70%.

关键词： heavy metal water body membranes electro-winning remediation

Effect of oxidization on enrichment behavior of TiO_2 in titanium-bearing slag

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Rare Metals 2006年第2期25卷 106-110页

作者： WANG Mingyu LI Liaosha zhang Li zhang linnan TU Ganfeng SUI Zhitong School of Metallurgy Science and Engineering Central South University Changsha 410083 China Key Laboratory of Metallurgy Engineering and Resources Recycling Anhui University of Technology Maanshan 243002 China School of Materials and Metallurgy Northeastern University Shenyang 110004 China

Due to the dispersed distribution of the titanium component in various mineral phases and very fine grain size, it is difficult to recover the titanium component from the slag. In order to utilize titanium resources, selective enriching and selective growing of the titanium component from the molten slag is expected. In this paper, the selection of the best titanium enrichment phase and the effect of oxidization on the enrichment of titanium by blowing air into the molten slag were studied. The results showed that through oxidizing the slag, the content of the perovskite phase increases while that of the other titanium-bearing mineral phases decreases until they disappear. Most titania resources were enriched into the perovskite phase and increase in size. The process of enrichment and growth is easily carried out.

关键词： oxidizing perovskite phase transformation enrichment titanium-bearing slag

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粒子群优化PID的供水电机调速系统研究

自动化应用 2024年第15期65卷 82-85页

作者：王成荣李栋于亚龙张林楠聊城大学东昌学院机电工程系山东聊城252000

针对叠压供水系统供水压力不稳定、控制效果时效性差的问题,提出了一种粒子群优化PID算法。结合粒子群算法与PID控制,根据供水压力展开粒子群优化PID参数算法程序,实时调整PID3个参数,并将其结果发送给变频器,实现电机平稳启动与调速,... 详细信息

针对叠压供水系统供水压力不稳定、控制效果时效性差的问题,提出了一种粒子群优化PID算法。结合粒子群算法与PID控制,根据供水压力展开粒子群优化PID参数算法程序,实时调整PID3个参数,并将其结果发送给变频器,实现电机平稳启动与调速,保证供水压力的稳定。仿真测试表明,该算法可实现对供水泵房电机的变频调速,有效解决了工频供水方式水压不稳定、控制效果时效性差的问题。

关键词：变频调速恒压控制供水系统粒子群算法 PID调速

Characterization of dendritic cell subtypes in human cord blood by single-cell sequencing

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Biophysics Reports 2019年第4期5卷 199-208页

作者： Xiaoyang Jin Lingyuan Meng Zhao Yin Haisheng Yu linnan zhang Weifeng Liang Shouli Wang Guanyuan Liu Liguo zhang Key Laboratory of Immunity and Infection Institute of Biophysics Chinese Academy of Sciences Department of Cardiology 306th Hospital of PLA University of Chinese Academy of Sciences Department of Gynecology and Obstetrics Beijing Chaoyang Hospital Capital Medical University Key Laboratory of Human Disease Comparative Medicine and Beijing Key Laboratory for Animal Models of Emerging and Reemerging Infectious Institute of Laboratory Animal Science (ILAS) Chinese Academy of Medical Sciences (CAMS) & Peking Union Medical Collage (PUMC)

Dendritic cells(DCs) are professional antigen-presenting cells(APCs). The key functions of DCs include engulfing, processing and presenting antigens to T cells and regulating the activation of T cells. There are two major DC subtypes in human blood: plasmacytoid DCs(p DCs) and conventional DCs. To define the differences between the adult and infant immune systems, especially in terms of DC constitution, we enriched DCs from human cord blood and generated single-cell RNA sequencing data from about 7000 cells using the 10 x Genomics Single Cell 30 Solution. After incorporating the differential expression analysis method in our clustering process, we identified all the known dendritic cell subsets. Interestingly, we also found a group of DCs with gene expression that was a mix of megakaryocytes and p DCs. Further, we verified the expression of selected genes at both the RNA level by PCR and the protein level by flow cytometry. This study further demonstrates the power of single-cell RNA sequencing in dendritic cell research.

关键词： Cord blood Dendritic cells Hematology Immunology Single-cell sequencing

Influence of nanometric CeO2 coating on high temperature oxidation of Cr

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Progress in Natural Science:Materials International 2007年第5期17卷 601-606页

作者： Jin Huiming , zhang linnan and Liu Xiaojun (Materials Research Center, Department of Mechanical Engineering, Yangzhou University, Yangzhou 225009, China College of Materials Science and Engineering, North-East University, Shenyang 110014, China) Materials Research Center Department of Mechanical Engineering Yangzhou University Yangzhou 225009 China College of Materials Science and Engineering North-East University Shenyang 110014 China

Isothermal and cyclic oxidation behavior of chromium and its superficially applied nanometric CeO2 samples were studied at 900℃in air. Scanning electronic microscopy (SEM), transmission electronic microscopy (TEM) and high resolution electronic microscopy (HREM) were used to examine the morphology and micro-structure of oxide films. It was found that ceria addition greatly improved the anti-oxidation ability of Cr both in isothermal and cyclic oxidizing experiments. Acoustic emission (AE) technique was used in situ to monitor the cracking and spalling of oxide films, and AE signals were analyzed in time-domain and number-domain according to the related oxide fracture model. Laser Raman spectrometer was also used to study the stress status of oxide films formed on Cr with and without ceria. The main reason for the improvement in anti-oxidation of chromium was that ceria greatly reduced the growing speed and grain size of Cr2O3. This fine-grained Cr2O3 oxide film might have better high temperature plasticity and could relieve parts of compressive stress by means of creeping, and maintained the ridge character and relatively low internal stress level. Meanwhile, ceria application reduced the size and the number of interfacial defects, while remarkably enhanced the adhesive property of Cr2O3 oxide scale formed on Cr substrate.

关键词： oxidation stress CeO2 nanoparticle coating chromium.

Structural Isomers:Small Change with Big Difference in Anion Storage

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Nano-Micro Letters 2024年第1期16卷 222-234页

作者： Huichao Dai Yuan Chen Yueyue Cao Manli Fu linnan Guan Guoqun zhang Lei Gong Mi Tang Kun Fan Chengliang Wang School of Integrated Circuits Wuhan National Laboratory for Optoelectronics(WNLO)Huazhong University of Science and TechnologyWuhan 430074People’s Republic of China Wenzhou Advanced Manufacturing Institute Huazhong University of Science and TechnologyWenzhou 325035People’s Republic of China Hubei Key Laboratory of Polymer Materials School of Materials Science and EngineeringHubei UniversityWuhan 430062People’s Republic of China School of Chemistry and Environmental Engineering Wuhan Institute of TechnologyWuhan 430073People’s Republic of China

Organic electrode materials are promising for ***,the reported organic electrodes are often facing the challenges of low specific capacity,low voltage,poor rate capability and vague charge storage mechanisms,*** are good platform to investigate the charge storage mechanisms and enhance the performance of batteries,which,however,have not been focused in ***,two isomers are reported for *** a result,the isomer tetrathiafulvalene(TTF)could store two monovalent anions reversibly,deriving an average discharge voltage of 1.05 V and a specific capacity of 220 mAh g−1 at a current density of 2 *** the other hand,the other isomer tetrathianaphthalene could only reversibly store one monovalent anion and upon further oxidation,it would undergo an irreversible solid-state molecular rearrangement to *** molecular rearrangement was confirmed by electrochemical performances,X-ray diffraction patterns,nuclear magnetic resonance spectra,and 1H detected heteronuclear multiple bond correlation *** results suggested the small structural change could lead to a big difference in anion storage,and we hope this work will stimulate more attention to the structural design for boosting the performance of organic batteries.

关键词： Zinc-organic batteries Isomers Solid-state molecular rearrangement Anion storage P-type organic electrode materials

Reinforced Lewis covalent bond by twinborn nitride heterostructure for lithium-sulfur batteries

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Journal of Energy Chemistry 2024年第1期88卷 363-372,I0009页

作者： Yaochen Song Pengkai Tang Yanjie Wang Yi Wang linnan Bi Qi Liang Liang He Qingyu Xie Yiyong zhang Peng Dong Yingjie zhang Yao Yao Jiaxuan Liao Sizhe Wang Yangtze Delta Region Institute(QuZhou) University of Electronic Science and Technology of ChinaQinzhou 324000ZhejiangChina School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731SichuanChina National and Local Joint Engineering Laboratory for Lithium-ion Batteries and Materials Preparation Technology Key Laboratory of Advanced Battery Materials of Yunnan ProvinceFaculty of Metallurgical and Energy EngineeringKunming University of Science and TechnologyKunming 650093YunnanChina School of Materials Science and Engineering Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic MaterialsShaanxi University of Science&TechnologyXi’an 710021ShaanxiChina School of Environmental Science and Engineering North China Electric Power UniversityBaoding 071003HebeiChina

The practical application of lithium-sulfur(Li-S)batteries,as promising next-generation batteries,is hindered by their shuttle effect and the slow redox ***,a tungsten and molybdenum nitride heterostructure functionalized with hollow metal-organic framework-derived carbon(W_(2)N/Mo_(2)N)was proposed as the sulfur *** hollow spherical structure provides storage space for sulfur,enhances electrical conductivity,and inhibits volume *** metal atoms in the nitrides bonded with lithium polysulfides(Li PSs)through Lewis covalent bonds,enhancing the high catalytic activity of the nitrides and effectively reducing the energy barrier of Li PSs redox ***,the high intrinsic conductivity of nitrides and the ability of the heterostructure interface to accelerate electron/ion transport improved the Li+*** leveraging the combined properties of strong adsorption and high catalytic activity,the sulfur host effectively inhibited the shuttle effect and accelerated the redox kinetics of Li ***-efficiency Li+transmission,strong adsorption,and the efficient catalytic conversion activities of Li PSs in the heterostructure were experimentally and theoretically *** results indicate that the W_(2)N/Mo_(2)N cathode provides stable,and long-term cycling(over 2000 cycles)at 3 C with a low attenuation rate of 0.0196%per *** design strategy of a twinborn nitride heterostructure thus provides a functionalized solution for advanced Li-S batteries.

关键词： Heterostructure Adsorption Redox kinetics

Sulfhydryl-functionalized COF-based electrolyte strengthens chemical affinity toward polysulfides in quasi-solid-state Li-S batteries

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Carbon Energy 2024年第9期6卷 221-234页

作者： linnan Bi Jie Xiao Yaochen Song Tianrui Sun Mingkai Luo Yi Wang Peng Dong Yingjie zhang Yao Yao Jiaxuan Liao Sizhe Wang Shulei Chou Yangtze Delta Region Institute(Quzhou) University of Electronic Science and Technology of ChinaQuzhouChina National and Local Joint Engineering Research Center of Lithium-ion Batteries and Materials Preparation Technology Key Laboratory of Advanced Battery Materials of Yunnan ProvinceFaculty of Metallurgical and Energy EngineeringKunming University of Science and TechnologyKunmingChina Institute for Carbon Neutralization College of Chemistry and Materials EngineeringWenzhou UniversityWenzhouChina School of Materials and Energy University of Electronic Science and Technology of ChinaChengduChina School of Materials Science and Engineering Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic MaterialsShaanxi University of Science&TechnologyXi'anChina

For lithium-sulfur batteries(Li-S batteries),a high-content electrolyte typically can exacerbate the shuttle effect,while a lean electrolyte may lead to decreased Li-ion conductivity and reduced catalytic conversion efficiency,so achieving an appropriate electrolyte-to-sulfur ratio(E/S ratio)is essential for improving the battery cycling efficiency.A quasi-solid electrolyte(COF-SH@PVDF-HFP)with strong adsorption and high catalytic conversion was constructed for in situ covalent organic framework(COF)growth on highly polarized polyvinylidene fluoride-hexafluoropropylene(PVDF-HFP)***-SH@PVDF-HFP enables efficient Li-ion conductivity with low-content liquid electrolyte and effectively suppresses the shuttle *** results based on in situ Fourier-transform infrared,in situ Raman,UV–Vis,X-ray photoelectron,and density functional theory calculations confirmed the high catalytic conversion of COF-SH layer containing sulfhydryl and imine groups for the lithium *** plating/stripping tests based on Li/COF-SH@PVDF-HFP/Li show excellent lithium compatibility(5 mAh cm^(-2) for 1400 h).The assembled Li-S battery exhibits excellent rate(2 C 688.7 mAh g^(-1))and cycle performance(at 2 C of 568.8 mAh g^(-1) with a capacity retention of 77.3%after 800 cycles).This is the first report to improve the cycling stability of quasi-solid-state Li-S batteries by reducing both the E/S ratio and the designing strategy of sulfhydryl-functionalized COF for quasi-solid *** process opens up the possibility of the high performance of solid-state Li-S batteries.

关键词： lithium-sulfur batteries low electrolyte-to-sulfur ratio polysulfide shuttle PVDF-HFP/COF

离子注钇对镍表面氧化膜微观结构与性能的影响

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化工学报 2007年第11期58卷 2859-2863页

作者：靳惠明周小卫张林楠扬州大学机械工程学院江苏扬州225009 北京大学环境科学与工程学院北京100023

对纯镍及其表面离子注钇样品在1000℃空气中的恒温氧化和循环氧化行为进行了研究。用扫描电镜和透射电镜对表面氧化膜的微观形貌进行了观测。用声发射方法对氧化膜在氧化和空冷阶段的开裂信号进行了实时监测。用激光拉曼谱对含钇和不含... 详细信息

对纯镍及其表面离子注钇样品在1000℃空气中的恒温氧化和循环氧化行为进行了研究。用扫描电镜和透射电镜对表面氧化膜的微观形貌进行了观测。用声发射方法对氧化膜在氧化和空冷阶段的开裂信号进行了实时监测。用激光拉曼谱对含钇和不含钇氧化膜的内应力水平进行了测量。结果表明,离子注钇显著提高了镍的抗氧化性能,其原因是钇降低了NiO氧化膜的生长速率、细化了氧化物晶粒,使氧化膜具有更好的高温塑性及释放膜内应力的能力。此外,离子注钇还减少了氧化膜/基体界面缺陷的数量及大小,因而显著改善了氧化膜在镍基体上的黏附性和保护性。

关键词：氧化离子注入激光拉曼谱应力钇