检索结果-南通市图书馆

Dry modification of electrode materials by roller vibration milling at room temperature

在线全文

学校读者我要写书评

暂无评论

Particuology 2008年第5期6卷 383-388页

作者： Shengjuan Li Shulin Wang Bo Xu Department of Power Engineering University of Shanghai for Science and Technology 516 Jungong Road Shanghai 200093 China

For the first time dry roller vibration milling at room temperature was used to prepare active carbon （AC） nano-particles and to modify MnO2 powder as electrode materials. In 30 min AC was milled to a mean particle size of 30-50 nm with increased crystallinity and higher specific surface area, predominantly mesoporous and with improved pore diameter distribution. Then, AC nano-particles were incorporated with MnO2 or bismuth-doped MnO2 nano-particles synthesized by sol-gel methods to prepare nano-composite electrode materials for studying their electrochemical performance. The AC nano-particles combined with 10 wt.% bismuth-doped MnO2 nano-particles were found to possess excellent electrochemical property with specific capacitance up to 308 F/g and without obvious attenuation with increasing current. Our method seems to ooen a new way to imorove AC based electrode materials used for clean energy such as suner capacitors.

关键词： Active carbon Roller vibration milling Electrode materials nano-materials Super-capacitors

A comprehensive review of the effect of different kinetic promoters on methane hydrate formation

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemical Engineering 2021年第4期34卷 1-16页

作者： Ekta Chaturvedi Sukumar Laik Ajay Mandal Gas Hydrates Laboratory Petroleum Engineering DepartmentIndian Institute of Technology(ISM)DhanbadIndia

Gas hydrates have recently emerged as a better alternative for the production,storage,and transportation of natural ***,factors like slow formation rate and limited storage capacity obstruct the possible industrial application of this *** types of promoters and synergists have been developed that can improve the kinetics and storage capacity of gas *** review focuses on different kinetic promoters and synergists that can be utilized to enhance the storage capacity of *** main characteristics,structure and the possible limitations of the use of these promoters are likewise portrayed in *** relationship between structure and storage capacity of hydrates have also been discussed in the *** status of production of gas from hydrates,their restrictions,and future difficulties have additionally been addressed in the ensuing areas of the review.

关键词： Gas hydrates Structure Storage capacity Kinetic promoters nano-materials Surfactants

Applications of functionalized ionic liquids

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2006年第5期49卷 385-401页

作者： LI Xuehui1, ZHAO Dongbin2,3, FEI Zhaofu2 & WANG Lefu1 1. Department of Chemical Engineering, Guangdong Provincial Laboratory of Green Chemical Technology, South China Uni-versity of Technology, Guangzhou 510641, China 2. Swiss Federal Institute of Technology, Lausanne, EPFL, CH-1015 Lausanne, Switzerland 3. PKU Green Chemistry Center, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China 1. Department of Chemical Engineering Guangdong Provincial Laboratory of Green Chemical Technology South China University of Technology Guangzhou 510641 China 2. Lausanne EPFL Swiss Federal Institute of Technology CH-1015 Lausanne Switzerland 3. PKU Green Chemistry Center Beijing National Laboratory for Molecular Sciences College of Chemistry and Molecular Engineering Peking University Beijing 100871 China

Recent developments of the synthesis and applications of functionalized ionic liquids (including dual-functionalized ionic liquids) have been highlighted in this review. Ionic liquids are at-tracting attention as alternative solvents in green chemistry, but as more functionalized ILs are pre-pared, a greater number of applications in increasingly diverse fields are found.

关键词： ionic liquids functionalized ionic liquids dual-functionallzed ionicliquids reaction media asymmetric synthesis nano-materials porous materials lubricants flue-gas desulfurization oil desul-furization

Pollutant and Soil Types Influence Effectiveness of Soil-Applied Absorbents in Reducing Rice Plant Uptake of Persistent Organic Pollutants

在线全文

学校读者我要写书评

暂无评论

Pedosphere 2017年第3期27卷 537-547页

作者： LIU Cuiying JIANG Xin MA Yuchun Barbara J.CADE-MENUN Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Jiangsu Key Laboratory of Agricultural Meteorology College of Applied Meteorology Nanjing University of Information Science and Technology State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil Science Chinese Academy of Sciences Agriculture and Agri-Food Canada Semiarid Prairie Agricultural Research Centre

Persistent organic pollutants （POPs） in soils are an environmental concern due to their long-term bioavailability, which could be reduced by adding adsorbents. However, testing of these adsorbents is necessary prior to widespread field application. The effects of three adsorbents, nano-organic montmorillonite, nano-organic silicon dioxide （SiOs）, and activated carbon, on hexachlorobenzene （HCB） and pentachlorobenzene （PeCB） accumulation in rice （Oryza sativa L.） plants were tested in a greenhouse experiment using two soils, a Hydragric Acrisol （Ac） and a Gleyi-Stagnic Anthrosol （An）. The bioconcentration factors （BCFs） of HCB and PeCB to rice roots were 2.3-3.7 and 2.0 3.0 times those to rice shoots, respectively. The applications of the three adsorbents decreased HCB and PeCB extractability in Ac, while only the application of activated carbon decreased their extractability in An. The bioavailability of HCB and PeCB to rice plants in Ac was higher than that in An. In Ac, the applications of nano-organic SiOs and activated carbon decreased the BCF of HCB to rice roots by 16.1% and 26.8%, respectively, whereas only the application of activated carbon decreased the BCF of PeCB to rice roots by 31.4%, compared to the control. In An, only the application of activated carbon decreased the BCFs of HCB and PeCB to rice roots by 22.9% and 18.2%, respectively, compared to the control. However, the application of nano-organic montmorillonite inhibited rice growth in both soils. The results of this study suggested that the effectiveness of adsorbents would vary with pollutant and soil types, providing a reference point for developing efficient adsorbents to reduce the ecological risk of POPs.

关键词： accumulation activated carbon bioconcentration factor hexachlorobenzene nano-materials pentachlorobenzene

Preparation and electrochemical performance of nano-scale Ni(OH)_2 doped with zinc

在线全文

学校读者我要写书评

暂无评论

Transactions of Nonferrous Metals Society of China 2013年第4期23卷 1033-1038页

作者：赵力刘志豪金雷哈尔滨工业大学化工学院哈尔滨150001

nano-scale Ni（OH）2 doped with Zn was prepared by precipitation transformation method and characterized by XRD and TEM. The electrochemical performance was investigated by cyclic voltammetry （CV） and constant current technology. The measurement results indicate that the lattice parameters of nano-scale Ni（OH）2 are changed and the agglomeration of particles becomes obvious with the increased Zn-doped content. Compared with un-doped one, the discharge specific capacities ofnano-scale Ni（OH）2 doped with 10% Zn are enhanced by 8% and 6%, respectively, at the discharge rate of 0.2C and 3C. After 110 cycles, the discharge specific capacity of the sample doped with 10% zinc is still above 85% of its initial capacity discharged at 0.2C. Therefore, a suitable Zn-doped content is beneficial to improving the discharge performance of nano-scale Ni（OH）2.

关键词： nano-materials nickel hydroxide Zn doping electrochemical performance

FORMING AND PRECISION MACHINING TO nanomaterials LUMP

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Mechanical Engineering 2004年第4期17卷 534-536页

作者： ZhanJie ZhangJin ChenBingkui ChenXiaoan CollegeofmaterialsEngineering ChongqingInstituteofTechnologyChongqing400050China

The technology of forming and machining lump nano-materials has beeninvestigated. Grinding, abrasive machining test has been conducted to Fe, Co, Ni and Al lumpnano-materials. Experiments have been done to measure grinding force, grinding thermal, machiningroughness and micro-hardness. Image analysis is carried out by metallographic and scanning tunnelmicroscopic microscope. Researches provide the basis data for forming and machining lumpnano-materials.

关键词： nano-materials Grinding machining Abrasive machining

Innovative technologies in manufacturing,mechanics and smart civil infrastructure

在线全文

学校读者我要写书评

暂无评论

International Journal of Smart and nano materials 2018年第4期9卷 261-278,I0003页

作者： Ken P.Chong Songye Zhu Department of Mechanical&Aerospace Engineering George Washington UniversityWashingtonDCUSA Department of Civil and Environmental Engineering The Hong Kong Polytechnic UniversityHong Kong SARChina

An overview on converging technologies that are the primary drivers of the 4th Industrial Revolution is presented,followed by new developments in advanced manufacturing,nano-,information-technologies and smart civil infrastructure *** of these transformative technologies is *** are on advanced manufacturing,nano mechanics/materials,sensors,structural control,smart structures/materials,energy harvesting,multi-scale problems and simulation methods.

关键词： nano-materials smart structures energy harvesting advanced manufacturing simulation and multi-scale problems

Synthesis and biochemical properties of fluorescent/magnetic bifunctional starch particles

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Central South University 2010年第2期17卷 211-217页

作者：王凤华刘俊唐冬英薛昌刚肖苏尧郑元青童春义王玲玲刘选明 College of Life Science and Biotechnology Hunan University College of materials Science and Engineering Hunan University School of Physics and Microelectronics Science Hunan University

Magnetic starch particles （MSPs） were synthesized in water-in-oil mieroemulsion at room temperature. MSPs were characterized by transmission electron microscopy （TEM）, Fourier transform infrared spectrometry （FTIR）, zeta potential system, thermogravimetric analysis （TGA） and vibrating sample magnetometry （VSM）. The average diameter of the MSPs was 220 nm, dispersed with well-proportioned size and magnetic resonance, the saturation magnetization was 3.64 ***/kg. MSP was coated with poly-L-lysine （PLL）, and then the surface of PLL-MSP was combined with fluorescein isothiocynate （FITC）. Results show that fluorescent/magnetic starch particles （FMSPs） are of stable photo-bleaching capability compared with free FITC, with low bio-toxicity and certain function of magnetic separation. It is expected that FMSPs are bifimctional nano-materials including fluorescence labelling and magnetic separation.

关键词： starch-particles nano-materials synthesis fluorescent properties magnetic properties biochemical properties

Review of some recent progress on materials science researches in China

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2012年第12期55卷 2497-2502页

作者： TANG Mei GUO YingQing YUAN Jie WEI Qin SUN ShuJun ZHOU Wei ZHANG Yue materials Science&Engineering School Beihang UniversityBeijing 100191China School of Mechanical and Electronic Engineering Nanjing Forestry UniversityNanjing 210037China School of Civil Engineering Southeast UniversityNanjing 210096China National Natural Science Foundation of China Beijing 100085China Beijing Institute of Aeronautics Material Beijing 100095China College of Chemistry Chemical Engineering and Materials ScienceHeilongjiang UniversityHarbin 150080China

New materials have become one of the most important and fastest-growing industries all over the *** progress in materials science and technology has produced profound influences on the national economy,daily life and national defense of our *** this paper,we review the state of the art of materials science and technology in China,with emphasis on recent research focuses and advanced technology.

关键词： nano-materials semiconductor materials superconducting materials cement ceramic alloy intelligent materials