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hollow spheres     
相关语句
  空心球
    Antimony doped tin oxide(ATO) solid and hollow spheres were fabricated by reducing ATO nanoparticles with graphite as the reducer in the high temperature tube furnace.
    通过在水平管式炉中用石墨还原锑掺杂二氧化锡(ATO)纳米颗粒的方法制备了ATO的实心球和空心球,并用EDX和XRD等技术分析了产物的物相和元素组成;
短句来源
    The results show that the products are ATO solid and hollow spheres with the diameters of about 0.2—5 μm and 2—20 μm, respectively.
    结果表明,产物为直径0.2~5μm的ATO实心球和直径为2~20μm的ATO空心球.
短句来源
    Hydrothermal Synthesis and Formation Mechanism of Micrometer-sized MoO_2 Hollow Spheres
    MoO_2微米空心球的水热合成及合成机理研究(英文)
短句来源
    Preparation of SiC Hollow Spheres from SiO_2@PPy Core/Shell Structure
    利用具有核壳结构的SiO_2@PPy粒子制备SiC空心球
短句来源
    Preparation of SiO_2,TiO_2,SnO_2 hollow spheres by colloidal carbon spheres
    利用胶体碳球为模板制备SiO_2、TiO_2、SnO_2空心球
短句来源
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  空心微球
    The calculated results show that the simulated PSD data are in good agreement with the experimental date,which means that the proposed model for the SHMS is reliable and the combined method of GCMC and SIE is powerful for evaluation of the PSD of the silica hollow spheres.
    模拟结果显示,用孔径分布拟合的吸附数据和实验吸附等温线吻合良好,说明PSD能够十分有效地表示SiO2空心微球的微孔结构.
短句来源
  中空微球
    Preparation of Hollow Spheres of Si/Al Composite Oxide with Mesopores in the Shell Wall
    壳壁上具有介孔的Si/Al复合氧化物中空微球的制备
短句来源
    Template Preparation of Inorganic Hollow Fibers and Hollow Spheres
    模板法制备无机中空纤维和无机中空微球
短句来源
    One-Step Route for Synthesizing titania Hollow Spheres with Controllable Shells
    厚度可控的二氧化钛中空微球的制备
    If the precious metals are loaded on TiO2 hollow spheres, the composite materials can be more practically usable.
    其中,TiO_2中空微球和金属中空微球以其优异的催化性能引起人们的关注。
短句来源
    The sizes of Ag and Pd were about 4 and 15 nm respectively. On the other hand, Ni-TiO2 composite hollow spheres and Ni hollow spheres were simply synthesized by chemical plating method, using TiO2/PS spheres and polystyrene spheres as the templates respectively. Furthermore, by applying an ultrasonic treatment, Ni hollow spheres with a diameter of about 0.15 μm and a shell thickness of about 5 nm were prepared.
    我们采用分段光催化沉积的方法,将贵金属钯和银沉积在TiO_2中空微球的表面,制备出纳米钯颗粒(粒径15 nm左右)和纳米银颗粒(粒径3 nm左右)高度分散的Pd-Ag-TiO_2复合中空微球
短句来源
  空心球的
    Preparation and characterization of analcime and sodalite composite hollow spheres
    方沸石和方钠石复合空心球的制备和表征
短句来源
    Hydrothermal Synthesis and Formation Mechanism of Micrometer-sized MoO_2 Hollow Spheres
    MoO_2微米空心球的水热合成及合成机理研究(英文)
短句来源
    Self-assembly and Characterization of Nanostructural TiO_2/PS and TiO_2 Hollow Spheres
    纳米结构TiO_2/PS及TiO_2空心球的自组装与表征
短句来源
    Preparation and Characterization of Three-dimensionally Ordered SiC Hollow Spheres
    三维有序SiC空心球的制备及表征
短句来源
    Preparation,Characterization and Catalytic Activity for CO Oxidation of CuO/SiO_2 Hollow spheres
    CuO/SiO_2空心球的制备、表征及对CO氧化的催化性质
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      hollow spheres
    New approaches to stimuli-responsive polymeric micelles and hollow spheres
          
    This article briefly describes some new approaches to stimuli-sensitive polymeric micelles and hollow spheres, which were developed in the authors' laboratory in recent years.
          
    Hollow spheres of PNIPAM network were then obtained by biodegradation of the PCL core.
          
    Both the core-shell spheres and hollow spheres show reversible size dependence on temperature change because of the phase transition of PNIPAM around 32°C.
          
    (3) Complexation-induced micellization and transition between the micelles and hollow spheres.
          
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    Carbon hollow spheres were prepared via catalytic pyrolysis with kaolin supported nickel nitrate as catalyst. The hollow carbon spheres were synthesized by the catalytic pyrolysis of C2H2 mixed with N2 at 850 ℃. The characterization of catalyst and hollow carbon spheres were carried out by XRD, TEM, SEM and Raman spec-troscopy. The TEM and SEM images suggested that the carbon spheres with diameter about 500 nm were hollow. SEM images and XRD patterns of catalyst suggested...

    Carbon hollow spheres were prepared via catalytic pyrolysis with kaolin supported nickel nitrate as catalyst. The hollow carbon spheres were synthesized by the catalytic pyrolysis of C2H2 mixed with N2 at 850 ℃. The characterization of catalyst and hollow carbon spheres were carried out by XRD, TEM, SEM and Raman spec-troscopy. The TEM and SEM images suggested that the carbon spheres with diameter about 500 nm were hollow. SEM images and XRD patterns of catalyst suggested some information about the possible formation mechanism of hollow spheres.

    在高岭土负载的镍催化剂上,于850℃催化裂解乙炔制备了直径约500nm的空心碳球。用XRD、TEM、SEM和显微激光Raman光谱对所得的碳球及催化剂进行了表征,并初步探讨了反应机理。

    Grand canonical Monte Carlo (GCMC) simulation and statistics integral equation (SIE) have been used to determine the pore size distribution (PSD) of the silica hollow microspheres (SHMS).HRTEM,XRD and nitrogen adsorption results indicate the occurrence of disordered mesopores on the shells of SHMS.In the simulation,the SHMS have been modeled as cylindrical pore with pore size distribution according to the experimental data.The nitrogen is considered as Lennard Jones (LJ) spherical molecule.The completely analytical...

    Grand canonical Monte Carlo (GCMC) simulation and statistics integral equation (SIE) have been used to determine the pore size distribution (PSD) of the silica hollow microspheres (SHMS).HRTEM,XRD and nitrogen adsorption results indicate the occurrence of disordered mesopores on the shells of SHMS.In the simulation,the SHMS have been modeled as cylindrical pore with pore size distribution according to the experimental data.The nitrogen is considered as Lennard Jones (LJ) spherical molecule.The completely analytical potential model proposed by Wang recently is applied to represent the interactions between the atoms inside the wall and the fluid molecules.The calculated results show that the simulated PSD data are in good agreement with the experimental date,which means that the proposed model for the SHMS is reliable and the combined method of GCMC and SIE is powerful for evaluation of the PSD of the silica hollow spheres.

    用巨正则系综蒙特卡罗(GCMC)模拟方法结合统计积分方程(SIE)计算了SiO2空心微球球壳上的孔径分布(PSD).HRTEM、XRD及氮气吸附等实验测试表明,SiO2空心微球的球壳上有无序的介孔孔道.在模拟中,基于实验数据,将SiO2空心微球模型化为具有一定孔径分布的园柱孔,流体模型化为Lennard-Jones(LJ)球,流体分子和孔壁间的相互作用采用Wang等人犤10犦最近提出的完全解析的势函数描述.模拟结果显示,用孔径分布拟合的吸附数据和实验吸附等温线吻合良好,说明PSD能够十分有效地表示SiO2空心微球的微孔结构.

    In this paper, it is demonstrated that the utility of poly-(ethylene glycol)(PEG), methacrylic acid(MAA) and sodium dodecylsulfate(SDS) can exert an exceptional control on the crystallization of ZnS by the in-situ polymerization of MAA monomers through addition of a certain amount of initiator, hereby provide a facile synthesis route to hollow ZnS spheres. The products obtained were characterized by using X-ray diffraction(XRD), transmission electron microscopy(TEM), scanning electron microscopy(SEM), and UV-Vis...

    In this paper, it is demonstrated that the utility of poly-(ethylene glycol)(PEG), methacrylic acid(MAA) and sodium dodecylsulfate(SDS) can exert an exceptional control on the crystallization of ZnS by the in-situ polymerization of MAA monomers through addition of a certain amount of initiator, hereby provide a facile synthesis route to hollow ZnS spheres. The products obtained were characterized by using X-ray diffraction(XRD), transmission electron microscopy(TEM), scanning electron microscopy(SEM), and UV-Vis optical absorption. TEM studies suggest that the hollow spheres with diameters ranging from 300 to 400 nm are obtained. The wall thickness was estimated to be about 50 nm. SEM images show that the wall is constituted of compact worm-like structures, which consist of well-aligned primary nanoparticles. It was also found that the variation of surfactant concentration drastically changed the morphology of the produced ZnS products due to the corresponding transformation of micelles′ structure. At a relative higher SDS concentration, ZnS spherical assemblies of platelike crystallites were obtained. The formation of the hollow spherical structure was interpreted in terms of the core-shell mechanism.

    利用仿生合成方法 ,通过加入一定量的引发剂使甲基丙烯酸原位聚合 ,在聚乙二醇 (PEG)、聚甲基丙烯酸 (PMAA)和十二烷基硫酸钠 (SDS)的三元添加剂混合溶液体系中控制了合成硫化锌晶体 ,提出了一种简单易行的合成硫化锌空心球的新方法 .采用透射电子显微镜 (TEM)、扫描电子显微镜 (SEM)、X射线粉末衍射 (XRD)及紫外吸收光谱等手段对合成样品的形貌、结构及性能进行了表征 .TEM结果显示 ,Zn S空心球的直径约为 3 0 0~ 40 0 nm,其壳层的厚度约为 5 0 nm. SEM结果显示 ,空心球的外壳是由初级纳米粒子定向熔合排列形成的蠕虫状结构紧密组装而成 .由于相应的胶束结构的改变 ,表面活性剂 SDS浓度的变化明显改变了 Zn S产物的形貌 ,在较高浓度的 SDS溶液中得到了 Zn S片状晶体的球形聚集体 .利用核 -壳机理初步解释了空心球结构的形成过程 .

     
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