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An effective method for the preparation of chlorolactones

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Chinese Chemical Letters 2011年第4期22卷 431-434页

作者： min zhu li li Jiang Ying Tong Hui Zhang College of Biological and Environmental Sciences Zhejiang Shuren University Hangzhou 310015 China

The effective chlorolactonization of alkenoic acids with（diacetoxyiodo）benzene and lithium chloride under mild conditions have been *** show that various 4-pentenoic acids react with（diacetoxyiodo）benzene and lithium chloride fluently in CH_3OH at room temperature,obtaining five-membered chlorolactones in good yields in short *** alkenoic acids,such as 3-butenoic acid and trans 3-hexenoic acid give some more complicated results,and 4-pentynoic acid provides a chloroenol lactone with Z configuration in 40%of yield.

关键词： Chlorolactone (Diacetoxyiodo)benzene Alkenoic acid Preparation

NaV3O8/poly(3,4-ethylenedioxythiophene) composites as high-rate and long-lifespan cathode materials for reversible sodium storage

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Rare Metals 2020年第8期39卷 865-873页

作者： Guo-Chun Ding li-min zhu Qi Yang ling-ling Xie Xiao-Yu Cao Yu-ling Wang Jian-Ping liu Xin-li Yang School of Chemistry and Chemical Engineering Key Laboratory of High Specific Energy Materials for Electrochemical Power Sources of Zhengzhou CityHenan University of TechnologyZhengzhou 450001China School of Environmental Engineering Key Laboratory of High Specific Energy Materials for Electrochemical Power Sources of Zhengzhou CityHenan University of TechnologyZhengzhou 450001China Department of Molecular Sciences Australian Research Council Centre of Excellence for Nanoscale BioPhotonicsFaculty of Science and EngineeringMacquarie UniversitySydneyNSW 2109Australia

Sodium-ion batteries have received a surge of interests for the alternatives to lithium-ion batteries due to their abundant reserves and low *** quest of reliable and high-performance cathode materials is crucial to future Na storage ***,poly(3,4-ethylenedioxythiophene)(PEDOT)was successfully introduced to NaV3O8 via in situ oxidation polymerization,which can effectively enhance electron conductivity and ionic diffusion of NaV3O8 *** a result,these NaV3O8@-PEDOT composites exhibit a significantly improved electrochemical performance including cycle stability and rate *** particular,NaV3O8@20 wt%PEDOT composite demonstrates better dispersibility and lower charge transfer resistance compared with bare NaV3O8,which delivers the first discharge capacity of 142 mAh-g-1and holds about 128.7 mAh·g-1 after 300 cycles at a current density of 120 mA·*** at a high current density of 300 mA·g-1,a high reversible capacity of 99.6 mAh·g-1 is *** these consequences suggest that NaV3O8@20 wt%PEDOT composite may be a promising candidate to serve as a high-rate and long-lifespan cathode material for sodium-ion batteries.

关键词： Sodium-ion batteries NaV3O8@PEDOT cathode composites In situ oxidation polymerization High-rate Long-lifespan

Comparison of biological behavior of lacrimal gland adenoid cystic carcinoma with high-grade transformation cells

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International Journal of Ophthalmology(English edition) 2023年第2期16卷 163-171页

作者： Chuan-li Zhang li-min zhu Xun liu Mei-Xia Jiang Ting-Ting lin Yan-Jin He Oculoplastic and Orbital Disease Department Tianjin Medical University Eye HospitalEye Institute and School of OptometryTianjin Key Laboratory of Retinal Functions and DiseasesTianjin Branch of National Clinical Research Center for Ocular DiseaseTianjin 300384China Tianjin Eye Hospital Optometry Center Tianjin 300384China

AIM:To evaluate the differences between human lacrimal gland adenoid cystic carcinoma with high-grade transformation(LACC-HGT)primar y cells cultured by high-grade transformation tissue and non-high-grade transformation(non-HGT)primary cells cultured by non-highgrade transformation tissue in proliferation,metastasis,drug susceptibility,and ***:LACC-HGT primary cells were established by tissue block culture,and the 4^(th)to 10^(th)generation primary cells were selected as research *** cells were preliminarily identified by immunofluorescent *** differences between non-HGT and LACC-HGT primary cells in terms of proliferation,metastasis,and drug susceptibility were compared by cell counting kit-8(CCK-8)assay,wound healing,and drug sensitivity *** expressed genes were screened using mRNA *** expression was analyzed using real-time quantitative polymerase chain reaction(RT-qPCR).RESULTS:LACC-HGT primary cells were successfully cultured by tissue block *** staining results showed that cytokeratin(CK)and CK7 expression levels were positive in LACC-HGT primary ***-8 results showed that the proliferation ability of LACCHGT cells was significantly higher than that of non-HGT *** healing experiment showed that the migration ability of LACC-HGT cells was significantly higher than that of non-HGT ***-HGT cells were also less sensitive to cisplatin and paclitaxel than non-HGT *** with non-HGT cells,9566 differentially expressed genes were found in LACC-HGT primary cells,of which 5162 were upregulated and 4404 were *** expression of N-acetylneuraminate pyruvate lyase(NPL),MARVEL domain containing 3(MARVELD3),syntabulin(SYBU),and allograft inflammatory factor 1(AIF1)was higher in LACCHGT cells than in non-HGT cells,whereas that of periostin(POSTN)was ***:LACC-HGT primary cells have faster proliferation,stronger migration ability,and poorer sens

关键词： lacrimal gland lacrimal gland adenoid cystic carcinoma high-grade transformation primary cell culture biological behavior mRNA array

Enhancing electrochemical performances of small quinone toward lithium and sodium energy storage

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Rare Metals 2022年第2期41卷 425-437页

作者： li-min zhu Guo-Chun Ding Qing Han Yong-Xia Miao Xin li Xin-li Yang Lei Chen Gong-Ke Wang ling-ling Xie Xiao-Yu Cao School of Chemistry and Chemical Engineering Henan University of TechnologyZhengzhou 450001China Key Laboratory of High Specific Energy Materials for Electrochemical Power Sources of Zhengzhou City Henan University of TechnologyZhengzhou 450001China College of Chemical and Printing-Dyeing Engineering Henan University of EngineeringZhengzhou 450007China School of Materials Science and Engineering Henan Normal UniversityXinxiang 453007China School of Environmental Engineering Henan University of TechnologyZhengzhou 450001China

Further application of organic quinone cathodes is restricted because they are inherent in poor conductivity and tend to dissolve in aprotic *** can work on the strong solubility of ***,the ortho-disodium salt of tetrahydroxyquinone(o-Na_(2)THBQ)was selected to promote the electrochemical properties of tetrahydroxyquinone(THBQ).Reduced dissolution of o-Na_(2)THBQ in electrolyte after salinization(replacement of two H with two Na)contributed to enhanced electrochemical *** sodium-ion batteries(SIBs)in ester-based electrolyte,o-Na2THBQ cathodes at 50 mA·g^(-1)exhibited a reversible discharge capacity of 107 mAh·g^(-1)after 200 ***,in ether-based electrolyte,reversible discharge capacities of 200.4,102.2,99.5 and 88 mAh·g^(-1)were obtained at 800,1600,3200 and 4800 mA·g^(-1)after 1000,2000,5000 and 8000 cycles,*** ultraviolet absorption spectra and ex situ dissolution experiments of THBQ and o-Na_(2)THBQ showed that o-Na_(2)THBQ hardly dissolved in ether-based *** lithium-ion batteries(liBs),graphene was selected to further enhance the conductivity of *** 50 mA·g^(-1),o-Na_(2)THBQ and o-Na_(2)THBQ/Gr cathodes exhibited reversible discharge capacities of 124 and 131.5 mAh·g^(-1)after 200 cycles in ester-based electrolyte,*** 50 mA·g^(-1),PTPAn/o-Na_(2)THBQ electrodes in an all-organic Na/li-ion battery showed reversible charge/discharge capacities of 51/50.3 and 33.8/33.1 mAh·g^(-1)after 200 cycles.

关键词： Na/li-ion batteries All-organic batteries Cathodes Organic materials Electrochemical performance

A mixed-valence polyoxometalate-based 3D inorganic framework cathode material for high-efficiency rechargeable AZIBs

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Rare Metals 2024年第8期43卷 3677-3691页

作者： Qing Han Hao-Ran Xiao Tao Zhou Bing-Chuan li liu Yang ling-ling Xie Xue-Jing Qiu Xian-Yong Wu li-min zhu Xiao-Yu Cao School of Chemistry and Chemical Engineering Henan University of TechnologyZhengzhou 450001China Key Laboratory of High Specific Energy Materials for Electrochemical Power Sources of Zhengzhou City Zhengzhou 450001China College of Materials Engineering Henan University of EngineeringZhengzhou450007China School of Environmental Engineering Henan University of TechnologyZhengzhou 450001China Department of Chemistry University of Puerto Rico-Rio Piedras CampusSan JuanPR 00925USA

The global trend towards new energy storage systems has stimulated the development of electrochemical energy storage *** these technologies,rechargeable aqueous zinc-ion batteries(AZIBs)have attracted considerable interest as a potential alternative to lithium-ion batteries(liBs)due to their affordable cost,environmental compatibility and high safety *** this study,a high-quality electrode for AZIBs has been successfully developed using a dehydrated mixed-valence polyoxometalate-based three-dimensional(3D)inorganic framework material known as[H_6Mn_(3)V^Ⅳ_(15)V-^Ⅴ_(4O)_(46)(H_2O)_(12)](3D-MnVO).This innovative 3D-MnVO material is built from the alternate connections of{V_(19)O_(46)}"sphere-shaped"clusters andμ_(2)-{Mn(H_(2)O)_(4)}bridges,where each{V_(19)O_(46)}cluster is surrounded by three pairs of vertically distributed{Mn(H_(2)O)_(4)}units,thus resulting in the 3D interpenetrating grid-like network from the infinite[-{V_(19)O_(46)}-μ_(2)-Mn(H_(2)O)_(4)-{V_(19)O_(46)}]_∞chains in three mutually perpendicular *** 3D framework structure of 3D-MnVO possesses abundant oxygen vacancies,spacious and multi-level interconnected channels for ion transport,which facilitates the efficient intercalation/deintercalation of hydrated Zn^(2+)into the pores of the primary structure via the intercalation capacitance *** a result,the 3D-MnVO electrode exhibits excellent diffusion rates and minimal interfacial *** a current density of 0.1 A·g^(-1),the 3D-MnVO cathode delivers a commendable discharge capacity of170.5 mAh·g^(-1)with 81.6%capacity retention after100 charge/discharge ***,even at a high current density of 1.0 A·g^(-1),the 3D-MnVO electrode delivers a remarkable reversible capacity of198.9 mAh·g^(-1).Our research results provide valuable insights into the development of advanced polyoxometalate-based 3D inorganic framework electrode materials for high-performance rechargeable AZIBs.

关键词： Cathode Polyoxometalate 3D inorganic framework Zinc-ion batteries Energy storage mechanism

Balancing free and confined metallic Ni for an active and stable catalyst——A case study of CO methanation over Ni/Ni–Al2O3

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Journal of Energy Chemistry 2020年第11期29卷 73-84页

作者： Yong-Shan Xiao Yong-Hong Song Chang liu Xian-Ying Shi Han-Qing Ge min-li zhu Zhao-Tie liu Zhong-Wen liu Key Laboratory of Syngas Conversion of Shaanxi Province School of Chemistry&Chemical EngineeringShaanxi Normal UniversityXi'an 710119ShaanxiChina

We propose a new strategy to make an active and stable Ni-based catalyst which can be operated in a wide range of reaction temperatures. The ordered mesoporous alumina(OMA) with confined Ni in the pore wall(Ni-OMA) was prepared via the one-pot evaporation induced self-assembly method. By using the incipient impregnation method, different amounts of free Ni were loaded over Ni-OMA(Ni/NiOMA) at a fixed total NiO content of 15 wt%. Characterization results confirmed the formation of wellstructured Ni-OMA, and the ordered structure was still well preserved even after impregnating NiO at a content of as high as 12 wt%. The catalysts were evaluated for the CO methanation as a model reaction under varied conditions. Importantly, the activity and stability of Ni/Ni-OMA for the titled reaction were significantly regulated by simply changing the ratio of the confined to free Ni. Over the optimum catalyst of NiO(2 wt%)/NiO(13 wt%)-OMA, the high activity at a temperature of as low as 300 ℃ was achieved with the space-time yield of methane over 7.6 g gcat-1 h-1 while a long-term stability for a time-onstream of 400 h was confirmed without an observable deactivation under the conditions of 600 ℃ and an extremely high gas hourly space velocity of 120,000 mL g-1 h-1. The results were well explained as the integrated merits of the free Ni for a high dispersion and the confined Ni in OMA for the anti-sintering property.

关键词： CO methanation Ni Ordered mesoporous alumina Evaporation induced self-assembly Ni-support interactions

New insights on(V_(10)O_(28))^(6-)-based electrode materials for energy storage:a brief review

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Rare Metals 2023年第5期42卷 1431-1445页

作者： Tao Zhou ling-ling Xie Yu Niu Hao-Ran Xiao Yu-Jie li Qing Han Xue-Jing Qiu Xin-li Yang Xian-Yong Wu li-min zhu Huan Pang Xiao-Yu Cao School of Chemistry and Chemical Engineering Henan University of TechnologyZhengzhou450001China Key Laboratory of High Specific Energy Materials for Electrochemical Power Sources of Zhengzhou City Zhengzhou450001China School of Environmental Engineering Henan University of TechnologyZhengzhou450001China Department of Chemistry University of Puerto Rico-Rio Piedras CampusSan JuanPR00925USA School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou225009China

Progress in humanity has intensified the demand for efficient and renewable energy storage,which warrants the development of advanced rechargeable batteries such as lithium-ion batteries(liBs),sodium-ion batteries(SIBs),zinc-ion batteries(ZIBs),and lithium-sulfur batteries(li-S batteries).Nevertheless,these batteries still suffer from certain limitations,such as the insufficient capacity and inferior stability in their electrode ***,developing a feasible electrode material for li/Na/Zn ion storage represents a critical ***,polyoxovanadates(POVs)materials,particularly decavanadate anion(V_(10)O_(28))^(6-)clusters,have attracted considerate attention as promising battery electrodes,due to their rich multi-electron redox process,high structural stability,simple preparation process,and abundant ligand *** this review,we provide an overview of the research progress of(V_(10)O_(28))^(6-)-based materials in various metal-ion battery systems,including liBs,SIBs,ZIBs,and li-S *** also discuss the underlying challenges associated with this type of materials,and we provide alternative strategies to overcome these *** review aims to facilitate the research and development of the nextgeneration(V_(10)O_(28))^(6-)-based battery materials.

关键词： (V_(10)O_(28))^(6-) Electrode materials Batteries Energy storage Progress and perspective

Preparation and Evaluation of Novel Solid Chlorine Dioxide-based Disinfectant Powder in Single-pack

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Biomedical and Environmental Sciences 2008年第2期21卷 157-162页

作者： min zhu li-SHI ZHANG XIAO-FANG PEI XIN XU Huaxi School of Public Health Sichuan University Chengdu 610041 Sichuan China

Objective To prepare and evaluate novel chlorine dioxide-based disinfectant powder in single-pack that is more convenient for use and transportation. Methods Orthogonal experiment was performed to determine the recipe of the disinfectant powder. Stability test, suspension quantitative bactericidal test, simulation field triM, and animal toxicity test were carded out to observe its bactericidal and toxicological effects. Results The orthogonal experiment showed that the type of water solution had no effect on the disinfectant powder and the best ratio of sodium chlorite to solid acid was 1：3. Ten grams of the disinfectant powder was fully dissolved in 20 mL water for 2 min, and diluted to 500 mL in water. After 5-10 min, the concentration of chlorine dioxide （CIO2） solution was 266 mg/L to 276 mg/L. After stored at 54℃ for 14 d, the average concentration of CIO2 was decreased by 5.03%. Suspension quantitative bactericidal test showed that the average killing logarithm （KL） value for both Staphylococcus aureus and Escherichia coli in 100 mg/L CIO2 solution for 2 min was over 5.00. In simulation field triM, the average descending KL value for Escherichia coli in the solution containing 100 mg/L CIO2 for 5 min was over 3.00. The mouse acute LD50 in the solution 5 times exceeded 5000 mg/kg. The disinfectant powder was not toxic and irritative to rabbit skin and had no mutagenic effect on mouse marrow polychromatic erythrocytes （PCE）. Conclusion The stability and bactericidal efficacy of solid chlorine dioxide-based disinfectant powder in single-pack are good. The solution containing 100 mg/L CIO2 can kill vegetative forms of bacteria. The concentration of CIO2 on the disinfecting surface of objects is 100 mg/L. The disinfectant powder is not toxic and irritative.

关键词： Chlorine dioxide Disinfectant powder Single-pack

Improved fast inra prediction algorithm of H.264/AVC

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2006年第Z1期7卷 101-105页

作者： liU Qiong HU Rui-min zhu li ZHANG Xin-chen HAN Zhen School of Computer Wuhan University Wuhan 430079 China School of Computer Wuhan University Wuhan 430079 China The Key Laboratory of Multimedia and Network Communications Engineering Wuhan University Wuhan 430079 China The Key Laboratory of Multimedia and Network Communications Engineering Wuhan University Wuhan 430079 China The Key Laboratory of Multimedia and Network Communications Engineering Wuhan University Wuhan 430079 China

With advanced prediction modes of intra prediction, intra coding of H.264/AVC offers significant coding gains compared with previous video coding standards. It uses an important tool called Lagrangian rate-distortion optimization (RDO)technique to decide the best coding mode for a block, but the computational burden is extremely high. In this paper, we proposed an improved fast intra prediction algorithm including block type selection and mode decision algorithm based on analysis of edge feature of a block. Our algorithm filters out unlikely block type and candidate modes to reduce the RDO calculations. Experimental results showed that the proposed algorithm can reduce the computation complexity of intra prediction from 52.90% to 56.31%, with 0.04 dB PSNR degradation and 2% increase of bit rate.

关键词： H.264, AVC, Intra prediction, Video coding