|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Screening hydroxyapatite for cadmium and lead immobilization in aqueous solution and contaminated soil:The role of surface area显示文摘Hydroxyapatite(HAP) has been widely used to immobilize many cationic metals in water and soils. The specific reason why an increase in the surface area of HAP enhances cadmium(Cd) uptake, but has no effect on lead(Pb) uptake, is not clear. The aim of this study was to determine the factors causing the differences in sorption behavior between Cd and Pb by evaluating HAPs with different surface areas. We synthesized HAPs with two different surface areas, which were characterized by X-ray diffraction, N_2 adsorption, and scanning electron microscopy, and then evaluated them as sorbents for Cd and Pb removal by testing in single and binary systems. The sorption capacity of large surface area HAP(1.85 mmol/g) for Cd in the single-metal system was higher than that of small surface area HAP(0.64 mmol/g), but there were no differences between single- and binary-metal solutions containing Pb. After the Cd experiments, the HAP retained a stable structure and intact morphology, which promotes the accessibility of reactive sites for Cd. However, a newly formed precipitate covered the surface and blocked the channels in the presence of Pb, which reduced the number of potential adsorption sites on HAP for Cd and Pb.Remediation experiments using Cd- and Pb-contaminated soil produced similar results to the solution tests. These results indicate that alterations of the structure and morphology during the reaction is an important factor influencing metal sorption to HAP. | Hongying Li Xisheng Guo Xinxin Ye | 2017 | Journal of Environmental Sciences2017，29，2： | 5 |
| 2 | Structural phase transition in nanostructured γ-Fe_2O_3显示文摘DUE to their specific physical,chemical and mechanical properties and large application proba-bility in many fields,nanostructured materials have been developing very fast in the recent tenyears.Thermal stability is an important property of the materials.Some interesting resultshave been obtained in the study of the thermal stability of nanostructured materials. | YE Xisheng, SHA Jian, SONG Hongqin, JIAO Zhengkuan, LU Guanglie, PENG Zifei and ZHANG Lide1. Department of Physics, Zhejiang University, Hangzhou 310027, China 2. Central Laboratory, Hangzhou University, Hangzhou 310028, China 3. Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China | 1997 | Chinese Science Bulletin1997，42，11： | 3 |
| 3 | Effect of nanometer-sized MgO particles on flux pinning in YBa_2Cu_30_(7-δ)显示文摘As is well known, the relatively low critical current density J_c and the serious flux motion limit a variety of applications of high-temperature superconductors (HTSCs). The introduction | CHEN Qinghu FANG Minghu YE Xisheng JIAO Zhengkuan ZHANG Qirui WEN Haihu ZHAO Zhongxian | 1997 | Chinese Science Bulletin1997，42，4： | 3 |
| 4 | 显示文摘 | YE Xisheng SHA Jian SONG Hongqin JIAO Zhengkuan LU Guanglie PENG Zifei and ZHANG Lide1. Department of Physics Zhejiang University Hangzhou 310027 China 2. Central Laboratory Hangzhou University Hangzhou 310028 China 3. Institute of Solid Stat | 1997 | Chinese Science Bulletin1997，，11： | 1 |
| 5 | Experimental investigation on the dielectrlc-behavior of nanostructured rutilephase titania显示文摘 | Ye Xisheng Xiao Zhigang Lin Dongsheng Huang Shaoyan Man Yihang | 2000 | Mater Sci and Eng B2000，74，： | 1 |
| 6 | Anomalous dielectric behavior in nanocrystalline γ-Fe_2O_3显示文摘The measurements of electric capacities and dielectric loss angles for nanocrystalline yFe2O3 under air and vacuum atmospheres have been conducted by using ac LRC method, and the conductivity and the polarization relaxation time have also been calculated from the frequency spectra of real and imaginary parts of the dielectric constants. The anomalous dielectric behavior implies the existence of two kinds of polarization mechanisms with different relaxation times, which are caused by the defects and the dangling bonds in the interfaces, respectively. The experimental and calculated results indicated that the polarization loss and the conductance loss are dominant in air atmosphere and vacuum, respectively. | YE Xisheng , SHA Jian , CHEN Bin , JIAO Zhengkuan ZHANG LideDepartment of Physics, Zhejiang University, Hangzhou 310027, China Northwest Institute of Nuclear Technology, Xi’ an 710024, China Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080, China Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China | 1999 | Chinese Science Bulletin1999，44，2： | 0 |
| 7 | Structural Phase Transition in Nanostructured TiO_2显示文摘Using DTA (difFerential thermal analysis) measurement on nanostructured TiO2, we find two endothermic peaks on the DTA curve. From XRD (X-ray diffraction) analysis of the original nanostructured TiO2 and its heat-treated samples, we obtain the following results: the first endothermic peak corresponds to the desorption of physical or chemical absorption, the second one is related to the structural phase transition from brookite to anatase then to rutile, and this structural phase transition is beneficial to the grain growth of | Xisheng YE Jian SHA and Zhengkuan JIAO(Dept. of Physics, Zhejiang University, Hangzhou 310027. China)Zifei PENG and Lide ZHANG(Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China) | 1997 | Journal of Materials Science & Technology1997，13，4： | 0 |
| 8 | Structure Transition of Nanocrystalline Fe_2O_3显示文摘A structure transition of Fe2O3 nanocrystal was studied by using DTA and TG thermal analysis and X-ray diffraction method. We found that size increase of the nanocrystals is larger after the structure transition than that before the transition. It means that the structure transition is beneficial on growth of | Jian SHA Xisheng YE Bin CHEN Qirui ZHANG and Zhengkuan JIAO(Dept. of Physics, Zhejiang University Hangzhou 310027, China)Guanglie LU(Central Lab., Hangzhou University Hangzhou 310028, China)Zifen PENG and Lide ZHANG(Institute of Solid State Physics, Chi | 1997 | Journal of Materials Science & Technology1997，13，4： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员