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A general synthesis of transition metal oxides with assistance of organic amines and their electrocatalytic properties

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Science China Chemistry 2011年第9期54卷 1454-1460页

作者： pan lu LI Li ZHANG ZuDe Department of Chemistry and Chemical Engineering Huainan Normal University Huainan 232001 China Department of Chemistry University of Science and Technology of China Hefei 230026 China

Several transition metal oxides,including α-Fe2O3,Fe3O4,Co3O4,NiO,CuO and ZnO,were synthesized via an easily controlled hydrothermal method at assistance of organic amine(cyclohexylamine or triethylamine).The synthesized samples were identified and characterized by X-ray diffraction(XRD),Transmission Electron Microscopy(TEM),High-resolution Electron Microscopy(HR-TEM),Field Emission Scanning Electron Microscopy(FE-SEM),N2 adsorption/desorption *** resultant metal oxides displayed various morphologies in *** as-prepared samples were used as electrocatalysts(CuO was excluded) modified on a glassy carbon electrode for p-nitrophenol reduction in a basic ***3O4 and Co3O4 samples showed higher catalytic activities.

关键词： transition metal oxides cyclohexylamine hydrothermal synthesis electrocatalysis

Simple reactor for the synthesis of silver nanoparticles with the assistance of ethanol by gas-liquid discharge plasma

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Plasma Science and Technology 2019年第4期21卷 34-43页

作者： pan lu Dong-Wook KIM Dong-Wha PARK Department of Chemistry and Chemical Engineering Inha University100 Inha-Ro.Michuhol-guIncheon 22212Republic of Korea Regional Innovation Center for Environmental Technology of Thermal Plasma(RIC-ETTP: Inha University100 Inha-RoMichuhol-gu.Incheon 22212.Republic of Korea

Atmospheric pressure plasma technology is gaining increasing importance because it is a simple and tunable synthesis process for the production of metallic *** addition to the development of the power supply,improving the reactor is also one of the main strategies to enhanee the *** this study,a simple reactor for the gas-liquid discharge plasma induced by argon gas was applied to synthesize silver nanopailicles from silver nitrate(AgNO3)in *** AC power supply with a peak voltage of 3.5 kV was *** frequency and on-time were set to 50 kHz and 2.5“s,*** oscilloscope showed that the rising time was approximately 2“*** ethanol was used as the source for the reactive reducing *** more additional comp on ents existed in the solution during the discharge and neither of the electrodes was in contact with the treated *** temperature in creased by 10°C within 1 min without a cooling *** was the main impurity and was expected to be produced from the decomposition of the organics under the *** elevated temperature decreased the organic by-products by evaporation and could also decrease the production of *** electron microscopy showed that the spherical silver nanoparticles with a size of approximately 10 nm were synthesized with a crystal structure and that a low concentration of ethanol prefers the production of the mono-dispersed colloid.

关键词： silver nanoparticles synthesis nonthermal plasma ethanol reduction gas-liquid discharge

Extraction of Amino-J Acid from Waste-water by Emulsion Liquid Membrane

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过程工程学报 2006年第5期6卷 738-741页

作者：潘碌亭 State Key Laboratory of Pollution Control and Resource Reuse Tongji UniversityShanghai 200092China

The emulsion liquid membrane technique was used to extract amino-J acid from industrial dye *** effects of stirring speed,ratio of the emulsion to water(Rew),ratio of the oil to internal phase(Roi)and membrane phase components on the extraction rate were investigated and *** results showed that the extraction rate of amino-J acid approached 97% when the stirring speed was 300 r/min,Rew 1:6,Roi 1:1,trioctylamine(TOA)3 mL/100 mL kerosene,and methyl?didecyle?alcohol?acrylate(LMA-2)3 g/100 mL kerosene,*** extraction rate had not changed with the oil phase reused for times.

关键词： emulsion liquid membrane liquid membrane separation industrial waste-water amino-J acid

Cyclic oxidation behavior of Cr-/Si-modified NiAlHf coatings on single-crystal superalloy produced by EB-PVD

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Rare Metals 2016年第5期35卷 396-400页

作者： lu Wang lu-lu pan Hui Peng Hong-Bo Guo Sheng-Kai Gong School of Materials Science and Engineering Beihang University Beijing Key Laboratory for Advanced Functional Material and Thin Film Technology Beihang University

The Cr-/Si-modified Ni Al Hf coatings were produced on single-crystal（SC） superalloy N5 by electron beam physical vapor deposition（EB-PVD）. The cyclic oxidation behavior of the coatings at 1100 °C was investigated. The microstructures of the oxide scales grown on the coatings were characterized by scanning electron microscope（SEM） with energy-dispersive X-ray spectrum（EDX）,electron probe micro-analyzer（EPMA） and X-ray diffraction（XRD）. The effects of Cr and Si on the cyclic oxidation behavior of the Ni Al Hf coatings were discussed. The addition of Si to the Ni Al Hf Cr coating not only reduces the oxidation rate but also enhances the oxide scale *** to the addition of Si in the coating, the segregation of Cr and Mo beneath the oxide scale is effectively avoided,which contributes to enhancing oxide scale adherence.

关键词： Reactive element NiAlHf coating Oxidation Electron beam physical vapor deposition Superalloy

Copolymerization of Ethylene with 10-Undecen-1-ol Using Highly Active Vanadium(Ⅲ) Precatalysts Bearing Bis(imino)pyrrolyl Ligands

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Chinese Journal of Polymer Science 2014年第5期32卷 603-608页

作者： Ling-pan lu Jing-shan Mu 李悦生 State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of Sciences University of the Chinese Academy of Sciences Changchun Branch The school of Materials Science and Chemical Engineering Ningbo University

The copolymerizations of ethylene with 10-undecen-1-ol have been investigated using vanadium precatalysts, bis（imino）pyrrolyl vanadium（Ⅲ） complexes 1-3, 2,5-C4H2N（CH=NR）2VCl2（THF）2 [R = C6H5 （1）, 2,6-iPr2C6H3 （2）, C6F5 （3）], and the iminopyrrolyl and b-diketiminate ones for comparison. The polar monomer was pretreated by diethylaluminium chloride （present also as the cocatalyst） before the copolymerization. The monomer reactivity ratios were evaluated using the Fineman-Ross method. The ligand structure considerably influenced the catalytic activity and tolerance towards the polar monomer, the polar monomer incorporation and the molecular weights of the resultant copolymers. The bis（imino）pyrrolyl vanadium complexes exhibited promising catalytic performance for the copolymerization, and a high catalytic activity up to 3.84 kg/mmolv·h with a high comonomer incorporation of 14.0 mol% was achieved by complex 3 under mild conditions.

关键词： Ziegler-Natta polymerization Copolymerization Functional polyolefin.

Effect of hydrolysis conditions on hydrous TiO_2 polymorphs precipitated from a titanyl sulfate and sulfuric acid solution

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International Journal of Minerals,Metallurgy and Materials 2012年第7期19卷 642-650页

作者： Hao Song Bin Liang Li lu pan Wu Chun Li Department of Metallurgical Engineering Sichuan University Chengdu 610065 China

The relationship between hydrolysis conditions and hydrous titania polymorphs obtained in a titanyl sulfate and sulfmic acid solu- tion was investigated by X-ray diffraction （XRD）, scanning electron microscopy （SEM）, and high-resolution transmission electron micros- copy （HRTEM）. The results revealed that the feeding rate of the titanyl sulfate stock solution, the concentration of *** acid, and the seed dosage of mtile crystal could significantly affect the hydrolysis rate, thus influencing the titania crystal phase. Hydrous TiO2 in the form of rutile, anatase, or the mixture of both could be obtained in solutions of low titanium concentrations and 2.5wt% to 15wt% sulfuric acid at 100℃. When the hydrolysis rate of titanitma expressed by TiOa was more than or equal to 0.04 g/（***）, the hydrolysate was almost phase-pure anatase, while the main phase state was rutile when the hydrolysis rate was less than or equal to 0.01 g/（***）. With the hy- drolysis rate between 0.02 and 0.03 g/（***）, the hydrolysate contained almost equal magnitude ofrutile and anatase. It seems that although rutile phase is thermodynamically stable in very acidic solutions, anatase is a kinetically stable phase.

关键词： titanium dioxide titanyl sulfate sulfuric acid hydrolysis anatase rutile

Immunological pathogenesis and treatment of systemic lupus erythematosus

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World Journal of Pediatrics 2020年第1期16卷 19-30页

作者： lu pan Mei-Ping lu Jing-Hua Wang Meng Xu Si-Rui Yang Department of Pediatric Rheumatology and Allergy The First HospitalJilin UniversityChangchunChina Department of Allergy Immunology and Rheumatology Children's HospitalZhejiang University School of MedicineHangzhouChina

Background Systemic lupus erythematosis(SLE)is a complex and clinically heterogeneous autoimmune disease.A variety of immunological defects contribute to SLE,including dysregulated innate and adaptive immune response.A clearer understanding of the mechanisms driving disease pathogenesis combined with recent advances in medical science is predicted to enable accelerated progress towards improved SLE-personalized approaches to *** aim of this review was to clarify the immunological pathogenesis and treatment of *** sources Literature reviews and original research articles were collected from database,including PubMed and *** articles about SLE were *** Breakdown of self-tolerance is the main pathogenesis of *** innate and adaptive immune networks are interlinked with each other through cytokines,complements,immune complexes and kinases of the intracellular *** targeted at possible targets of immunity have been assessed in clinical *** of them did not show better safety and efficacy than traditional ***,novel targeting treatments are still being *** Dysregulated immune response plays a critical role in SLE,including innate immunity and adaptive *** agents that aim to specifically target abnormal immune processes were assessing and may bring new hope to SLE patients.

关键词： Immunological pathogenesis Systemic lupus erythematosis Treatment

Recent Advances in Atomic-scale Storage Mechanism Studies of Two-dimensional Nanomaterials for Rechargeable Batteries Beyond Li-ion

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Chemical Research in Chinese Universities 2020年第4期36卷 560-583页

作者： pan lu DONG Jinyang YI Ding YANG Yijun WANG Xi Department of Physics School of ScienceBeijing Jiaotong UniversityBeijing 100044P.R.China Chemistry ami Chemical Engineering Guangdong Laboratory Shantou 515031P.R.China Beijing Key Laboratory of Environmental Science and Engineering School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081P.R.China

Developing new types of rechargeable batteries with high energy densities and low cost have received in creasing attentions,aiming to reduce the dependence on high-priced *** Li-ion batteries,the potential alternatives including Na-ion batteries,Li-S batteries and Li-air batteries have been investigated recently,which are required to be viable for commercial *** this point of view,to understand the electrochemical reaction mechanisms and kinetics of these batteries has become the key challenge to make breakthroughs in the field of new energy *** this review,we present a critical overview of the two dimensional nanomaterials-based batteries(except Li-ion-based batteries)that could meet such *** develop new energy storage devices with more promising performances,the microstructure evolution and atomic scale storage mechanism of these batteries are comprehensively *** addition,the major challenges and opportunities of advanced characterization techniques are finally *** do hope that this review will give the readers a clear and profound understanding of the electrochemical reaction mechanisms and kinetics of the as-discussed *** effectively contributing to the smart design of future-generation energy storage devices.

关键词： Two dimensional(2D)nanomaterial Batteries beyond Li ion In sinu technique Atomic-level Storage mechanism and kinetics

Synthesis of Fe3O4,Fe2O3,Ag/Fe3O4 and Ag/Fe2O3 nanoparticles and their electrocatalytic properties

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Science China Chemistry 2013年第3期56卷 362-369页

作者： pan lu TANG Jing CHEN YongHong Department of Chemistry and Chemical Engineering Huainan Normal University Anhui Key Laboratory of Low Temperature Co-Fired Material Huainan Normal University

Two important iron oxides:Fe3O4 and Fe2O3,as well as Fe3O4 and Fe2O3 nanoparticles mingling with Ag were successfully synthesized via a hydrothermal *** samples were confirmed and characterized by X-ray diffraction(XRD),and X-ray photoelectron spectroscopy(XPS).The morphology of the samples was observed by transmission electron microscopy(TEM).The results indicated Fe3O4,Fe2O3,Ag/Fe3O4 and Ag/Fe2O3 samples all were nanoparticles with smaller *** samples were modified on a glassy carbon electrode and their elctrocatalytic properties for p-nitrophenol in a basic solution were *** results revealed all the samples showed enhanced catalytic performances by comparison with a bare glassy carbon ***,p-nitrophenol could be reduced at a lower peak potential or a higher peak current on a glassy carbon electrode modified with Ag/Fe3O4 or Ag/Fe2O3 composite nanoparticles.

关键词： Fe3O4 Fe2O3 Ag/Fe3O4 Ag/Fe2O3 electrocatalysis