杂志纳米技术

其具有高的吸湿能力的吸湿材料成功地被氯化钠使用氧化物两种细微差别官能（NaCl）的升级。一个程序的开发是为了第一制备亚微米大小的NaCl晶体;此后，这些晶体通过任一的二氧化钛涂覆的选择（二氧化钛₂）或硅石（二氧化硅₂），以提高的NaCl的吸湿特性和防止其过早潮解。涂覆后，被雇用几种分析技术来评估所获得的复合材料。我们的调查结果显示，这两种复合氯化钠，二氧化钛₂和NaCl-的SiO₂由比较单一的NaCl展示有趣的亲水性能，给了优异的性能。这是通过两个环境扫描电子显微镜（ESEM）和水蒸汽吸附实验证实。特别是，NaCl的二氧化钛₂复合体表明由于TiO 2的存在下，在低相对湿度和以更快的吸附速率的最高水吸附容量，由所述高表面能诱导₂。该结果也被吸附的动力学，这表明，不仅确实的NaCl-TIO确认₂吸附更多的水蒸汽比的NaCl的SiO₂或唯一的NaCl也吸附在发生率要高得多。而在室温和相对湿度高时，NaCl的二氧化硅₂复合体表明最佳的吸附性质，使其理想用作吸湿材料，显示出比对NaCl-TIO最大吸附性能₂或唯一的NaCl。因此，NaCl的二氧化钛₂和NaCl-的SiO₂复合材料可被视为有前途的吸湿性材料和潜在的候选人，以取代现有的盐晶种剂。

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我们合成了氧化锌 - 氧化还原的石墨烯氧化物（ZnO类RGO）复合材料使用一锅化学沉积法在室温下。Zinc powder and graphene oxide (GO) of different mass ratios (1 : 1, 1 : 2, 1 : 5, 1 : 10, and 1 : 20 GO to Zn) were used as precursors in a mildly alkaline solution. UV-Vis spectroscopy was used to study the photocatalytic efficiency of the samples through the photodegradation of methylene blue (MB). UV-Vis measurements show the fast decomposition of methylene blue under UV light illumination with the best degradation efficiency of 97.7% within one hour, achieved with sample ZG2 (1 GO : 2 Zn mass ratio). The corresponding degradation rate was k_ZG2 = 0.1253 min^-1，这至少是5.5比使用水热法等现有的作品更美好的时代。我们认为，通过ZG2 MB的优良光降解是由于由RGO与在ZnO和ZnO-C键的形成的电子相互作用所带来的有效的电荷分离，由XRD和拉曼光谱测量值作为支撑。

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碳纳米管（CNT）表现出在几个器件组件被使用优良的电性能和热性能，如从碳纳米管的集合体，也称为巴克纸（BP）由电极片材。尽管如此，当随机组装以形成单个BP CNT的特性降低。In this way, this study investigated the thermoelectric effect of a BP electrode assembled on a copper electrode with an active area of 4.0 cm²。该显微照片通过扫描电子显微镜和附聚的多壁碳纳米管，其渗透到滤纸的显示形态获得，形成了厚度为67.33 μ米此外，室内室外进行接近来自热源的BP电极测试。Thus, the electrical responses in function of temperature variation show maximum thermovoltages of 9.0 mV and 40.73 mV from室内和户外测试分别。Finally, an average Seebeck coefficient for the BP/copper electrodes array of 35.34 ± 6.0 mV/K was estimated from 298 to 304 K. These findings suggest that this assembly will be easily applied in thermoelectric device concepts.

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健康危害由于氟化物长期接触所产生的意识，导致研究人员寻求更多的创新战略，以消除饮用水中过量氟。在自然和人为来源氟化物化学物质轴承污染饮用水，其主要导致人类摄取氟化物。因此，发展可持续的办法减轻对是必不可少的。在降氟的许多新兴技术，纳米技术方法中脱颖而出由于其高效率，因此，在许多地区，水纳米过量氟化物去除抬头与其它传统吸附剂和过程。The present review focuses on some of the advanced and recent nanoadsorbents including their strengths and shortcomings (e.g., CNT, LDH, graphene-based nanomaterials, and magnetic nanomaterials) and other processes involving nanotechnology while discussing basic aspects of hydrochemistry of fluoride and geological conditions leading for water fluoride contamination. Considering all the findings in survey, it is evident that developing more sustainable techniques is essential rather than conducting batch-type experiments solely.

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背景。对水生环境纳米颗粒（NP）的影响研究甚少。目标。本研究评估这些不同的金属纳米颗粒和它们的散装以混合物的联合作用的毒性（铝₂Ø₃，CuO和二氧化硅₂）使用生物标记物的组织学鱼。材料和方法。的三种盐的体积和尺寸的纳米（铝₂Ø₃，CuO和二氧化硅₂）使用。Nanosizes ranged from 25 nm to 100 nm. The juvenile fishes of革胡子鲇(mean Length: 12.3 ± 3.5 cm; mean weight: 18.52 ± 6.41 g) were used for the acute and chronic toxicity tests. They were exposed to 7 mg/L each of the bulk and nano sizes of the three metallic oxides either singly or in mixtures for 28 days. The basis for the sublethal concentration was that the 96 hr acute toxicity of the varied sizes of the three metallic oxides was nontoxic up to the concentrations of 100 mg/L with no significant mortality at the highest exposure concentrations. The gills were collected for histopathology.结果。三个金属氧化物纳米颗粒的的SiO是最有毒的，与组织病理学改变指数为20.0（HAI），随后通过纳米的CuO（HAI，10.0）和纳米的Al₂Ø₃（HAI，2.0）。在单次曝光中，鳃改变包括鳃薄片（EGL），肥大（HPT），水肿（OD），和坏死（N）的侵蚀的高频率。Less damage was observed at the combination of the metal oxide nanoparticles of SiO + Al₂Ø_3，SiO + CuO and SiO + Al₂Ø₃ + CuO in equal (1 : 1—HAI, 2 and 6; 1 : 1 : 1—HAI, 6) and unequal ratios (1 : 2—HAI, 16 and 6; 2 : 1—HAI, 8 and 6). Similarly, all bulk combinations were also antagonistic except for the equal ratio of bulk CuO (HAI, 20) and bulk Al₂Ø₃（HAI，10），其产生具有32 HAI加性效应。结论。纳米氧化铝的联合行动₂Ø₃和CuO与二氧化硅产生了低的毒性作用，不像他们单个试验的高毒性;这也表明，纳米氧化铝₂Ø₃和CuO是拮抗剂。类似地，本体金属氧化物中（SIO，铝₂Ø₃和CuO），氧化铜是最有毒的。散装二氧化硅和Al₂Ø₃是对CuO对鱼鳃的影响拮抗。有必要正确记录纳米颗粒的生态影响在水生环境。

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本文描述了一种简单的方法来图案化的纳米颗粒在平坦表面上使用聚（乙二醇）的防污性从钛的天然氧化物的溶液沉积单层。原子力显微术来图案产生抗蛋白的表面上的蛋白的活性位点的聚（乙二醇）单分子层。不同尺寸的图案已经被剃不同的重复单层产生。摩力显微镜用于图像的模式。The smallest patterns are 50 nm and the largest patterns are 500 nm at full width half maximum. The smallest pattern was produced with one shave, whereas the largest pattern was produced by shaving the monolayers 112 times. Protein-coated nanoparticles were immobilised on the shaved (protein active) part of the monolayers by dipping the patterned samples into a solution that contains 2% by volume protein-functionalized nanoparticles with a nominal diameter of 40 nm. Atomic force microscopy was used to take a topographic image of the samples. The topographic image showed that the protein-functionalized nanoparticles were attached onto the shaved part of the substrate but not on the poly(ethylene glycol)-covered part of the substrate. The level of aggregation of the nanoparticles was also investigated from the topographic image. The section analysis of the topographic image of the nanoparticle patterns showed a height of 40 nm which proved that only a monolayer of particles were deposited on the shaved part of the monolayer.

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