TiO2/SiO2/Fe3O4磁载光催化剂降解性能的研究
采用了电解法合成的磁性纳米Fe3O4为磁核,Si O2为中间保护层,以钛酸四丁酯为原料通过溶胶-凝胶法在较低温度下合成了Ti O2/Si O2/Fe3O4磁载光催化剂。研究了Ti O2/Si O2/Fe3O4磁载光催化剂对甲基橙溶液作为代表的有机物进行了光催化降解及磁分离回收性能的实验。结果表明,Ti O2/Si O2/Fe3O4磁载光催化剂即具有较高的光催化降解能力,也具有较好的磁分离回收性能。
Materials Literature
文献浏览
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
变形温度对固溶态Fe-Mn-Si基合金形状记忆效应的影响
采用OM、XRD和SQUID研究了在77~293 K变形时固溶态Fe-17Mn-5.5Si-9Cr-5.5Ni-0.12C合金的形状记忆效应和微观组织随变形温度的演化规律。结果表明：当变形温度在223~293 K之间时,固溶态Fe-17Mn-5.5Si-9Cr-5.5Ni-0.12C合金的奥氏体屈服强度与应力诱发e马氏体临界应力的差值△σ0.2从293 K的26 MPa迅速增加至223 K的105 MPa,即奥氏体抵抗塑性变形的能力随变形温度的降低而显著提高,所以其形状回复率从293 K的42%显著提高至223 K的72%;当进一步降低变形温度至77 K时,△σ0.2仅缓慢增加至125 MPa,即奥氏体抵抗塑性变形的能力缓慢提高,…
Mg、Si元素对Al-Mg-Si合金性能影响探讨
文章研究了Mg、Si元素对Al-Mg-Si合金性能影响,重点分析Mg/Si对Al-Mg-Si合金导线在时效过程中导电率及显微硬度的影响。利用示差扫描量热法（DSC）及透射电子显微镜（TEM）方法分析,探索镁硅比对Al-Mg-Si合金导线性能影响的内在机理。
A novel white emitting phosphor Ca2PO4Cl：Dy^3＋： luminescence, concentration quenching and thermal stability
A novel white emitting phosphor Ca2PO4Cl:Dy3+ was synthesized by a solid state method. The luminescence, concentration quenching and thermal stability of Ca2PO4Cl:Dy3+ were investigated. Ca2PO4Cl:Dy3+ showed three emission peaks, which were located at 483, 575 and 660 nm. Though the ratio of yellow to blue emission in…
XY-H2型催化剂中试生产PE 100管材专用料的性能
以乙烯和1-丁烯为原料,三乙基铝为助催化剂,采用国产XY-H 2型催化剂,生产PE 100管材专用料（产品编号为YK 1002）,并与中国石油吉林石化公司生产的产品（采用进口催化剂,产品牌号为GC 100 S）性质进行了对比。结果表明,YK 1002的各项基础性质与GC 100 S相当。与GC 100 S相比,YK 1002低相对分子质量部分较低,高相对分子质量部分较高,相对分子质量分布较窄。YK 1002管材的加工性能良好,并且在不同测试条件下,管材的静液压强度试验均满足GB/T 15558.1—2003要求。
Opto-mechanical control of nerve growth
Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2015.
水平连铸-连续挤压成形Al-0.70Fe-0.24Cu合金导线的显微组织和性能
提出一种制备Al-0.70Fe-0.24Cu合金导线的新工艺,该工艺包括水平连续铸造和随后的Conform连续挤压成形,并对合金的力学性能、导电性能和压缩蠕变性能进行研究。结果表明：Conform连续挤压工艺导致明显的晶粒细化、应变诱导Al7Cu2Fe相的析出以及晶体取向分布的改变。采用该工艺加工的Al-0.70Fe-0.24Cu合金导线具有良好的综合力学性能和导电性能;在90°C和76 MPa条件下,该合金与纯铝和退火铜相比具有良好的抗蠕变性能,蠕变初始阶段的应变与时间遵循对数关系。合金性能的提高与在加工过程中形成的细晶和均匀分布的AlFe及Al7Cu2Fe热稳相有关。
电热板消解—火焰原子吸收法对污泥中铅、铜、锌的测定研究
取武汉市某污水处理厂脱水污泥为实验研究对象,用BCR三步提取法对污泥中Pb、Cu、Zn的4种存在形态进行分离提取,用电热板消解法进行全量消解,利用火焰原子吸收（FAAS）检查污泥样品中Pb、Cu、Zn的总量和各形态含量。结果表明,武汉市某污水处理厂脱水污泥中Pb和Cu的含量较低,Zn的含量较高,其中,Pb主要以残渣态的形态存在,弱酸提取态较少,Cu的弱酸提取态仅占0.2%,主要以氧化态的形态存在;Zn的4种形态分布较平均,可氧化态所占比例略高于其它三种形态。
Total (dissolved + particulate) Thorium-234 (Th-234) and Uranium-238 (U-238) specific activities in seawater during POLARSTERN cruise ANT-XXVIII/3
Total (dissolved + particulate) Thorium-234 (Th-234) and Uranium-238 (U-238) specific activities in seawater during POLARSTERN cruise ANT-XXVIII/3
Pipeline renewal or lifetime extension?
In 2014, the Rotterdam - Rijn Pijpleiding (RRP) Maatschappij decided to conduct a vast experimental test programme with the objective to demonstrate that the lifetime of the pipe sections with channeling corrosion in their 54 years old 24" grade API5L X52 oil product pipeline is sufficiently high for the future safe o…
Predicting thermal behavior of chemicals from molecular structure
Keywords: Thermal behavior ; Molecular ; Chemicals Reference EPFL-CONF-207812 Record created on 2015-05-11, modified on 2017-11-13
Theoretical and Experimental Analyses of Poisson Ratios for Plain-Woven Fabrics
A theoretical model with extensible yarns for plain-woven fabrics is developed to determine the calculation of Poisson ratios.The stress ratio( warp: weft),as one of parameters corresponding to Poisson ratio variations, is introduced to complement the theoretical model. To evaluate the reliability of the theoretical a…
GS-EDA/CNTs协同改性PS纳米复合材料的制备及力学性能
用溶液复合法制备了乙二胺（EDA）共价功能化改性氧化石墨烯片（GS-EDA）/酸化碳纳米管（MWCNTs-COOH）/聚苯乙烯接枝马来酸酐（PS-g-MAH）纳米复合材料.采用傅里叶变换红外光谱（FTIR）和X射线衍射（XRD）分析了填料的表面结构;并通过拉伸、冲击性能和熔融指数实验测试了纳米复合材料的力学性能和熔融流动性能.研究结果表明,EDA已经成功接枝于GS-EDA的表面;复合过程中GS-EDA、MWCNTs-COOH与PS-g-MAH之间发生了化学作用,从而改善了复合材料的力学性能.石墨烯与碳纳米管对PS-g-MAH具有明显的协同增强和增韧效应.与单独加入一种填料相比,同时加入石墨烯和碳纳米管对复合材料拉伸性能和冲击强度的…
Application of Atmospheric Pressure Plasma in Polymer and Composite Adhesion
An atmospheric pressure helium and oxygen plasma was used to investigate surface activation and bonding in polymer composites. This device was operated by passing 1.0-3.0 vol% of oxygen in helium through a pair of parallel plate metal electrodes powered by 13.56 or 27.12 MHz radio frequency power. The gases were parti…
Status and outlook of fusion research
Fusion research aims to develop fusion as a promising energy source for the future.The latest status of fusion research is represented in the physics and technology basis of the large tokamak ITER [1] currently under construction, which is expected to produce for the first time significant fusion power (P fus ~ 500 MW…
Advances in Fine Pitch Off-Chip Interconnections Through the Use of a Novel Surface Finish
One constant in electronic system integration is the continuous trend towards smaller devices with increased functionality, driven by emerging mobile and high-performance applications. This brings the need for higher bandwidth at lower power, translating into increased I/O density, to enable highly-integrated systems…
The Effect of Protein Corona on Gold Nanoparticles Aggregation
Nanoparticles (NPs) are the particles between 1 and 100 nm. They are widely used in the medical field as delivery vehicles, therapeutics and contrast agents in cancer diagnosis and treatment. There are different types of NPs divided according to the source of used materials. The agglomeration of NPs can be prevented b…
글라이딩 아크 플라즈마 방전에 의한 이산화탄소 저감 특성
이산화탄소 포집 및 활용(CCU)은 화석연료 시 배출되는 온실가스인 $CO_2$ 저감과 이용을 위해 잠재력을 가지고 있는 기술이다. 이산화탄소를 분해하기 위해 3상 글라이딩 아크 플라즈마-촉매 반응기를 설계 및 제작하였다. 이산화탄소 저감 특성 실험은 단일 이산화탄소 가스 공급 유량 변화와 이산화탄소와 메탄 혼합 주입에 따른 주입 전력 변화, 촉매 그리고 수증기 공급 변화에 대해 연구를 수행하였다. 단일 이산화탄소 공급 유량이 12 L/min에서 분해율이 7.9%, 에너지 분해 효율은 $0.0013L/min{\cdot}W$ 로 나타났다. 이산화탄소 분해됨에 따라 일…
Reaction Kinetic Investigation and scale-up evaluation based on calorimetric data
Keywords: Kinetic ; Scale-up ; Calorimetric Reference EPFL-CONF-207811 Record created on 2015-05-11, modified on 2017-11-13
Aspherical Lens Design and Imaging
We design freeform lenses refracting an arbitrarily given incident field into a given fixed direction. In the near field case, we study the existence of lenses refracting a given bright object into a predefined image. We also analyze the existence of systems of mirrors that solve the near field and the far field probl…