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首页> 外文期刊>RSC Advances >Characterization of aluminum, aluminum oxide and titanium dioxide nanomaterials using a combination of methods for particle surface and size analysis
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Characterization of aluminum, aluminum oxide and titanium dioxide nanomaterials using a combination of methods for particle surface and size analysis

机译：结合颗粒表面和尺寸分析方法表征铝，氧化铝和二氧化钛纳米材料

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The application of appropriate analytical techniques is essential for nanomaterial (NM) characterization. In this study, we compared different analytical techniques for NM analysis. Regarding possible adverse health effects, ionic and particulate NM effects have to be taken into account. As NMs behave quite differently in physiological media, special attention was paid to techniques which are able to determine the biosolubility and complexation behavior of NMs. Representative NMs of similar size were selected: aluminum (Al ~(0) ) and aluminum oxide (Al _(2) O _(3) ), to compare the behavior of metal and metal oxides. In addition, titanium dioxide (TiO _(2) ) was investigated. Characterization techniques such as dynamic light scattering (DLS) and nanoparticle tracking analysis (NTA) were evaluated with respect to their suitability for fast characterization of nanoparticle dispersions regarding a particle's hydrodynamic diameter and size distribution. By application of inductively coupled plasma mass spectrometry in the single particle mode (SP-ICP-MS), individual nanoparticles were quantified and characterized regarding their size. SP-ICP-MS measurements were correlated with the information gained using other characterization techniques, i.e. transmission electron microscopy (TEM) and small angle X-ray scattering (SAXS). The particle surface as an important descriptor of NMs was analyzed by X-ray diffraction (XRD). NM impurities and their co-localization with biomolecules were determined by ion beam microscopy (IBM) and confocal Raman microscopy (CRM). We conclude advantages and disadvantages of the different techniques applied and suggest options for their complementation. Thus, this paper may serve as a practical guide to particle characterization techniques.
机译：适当的分析技术的应用对于纳米材料（NM）表征至关重要。在这项研究中，我们比较了用于NM分析的不同分析技术。关于可能的不良健康影响，必须考虑离子和颗粒NM的影响。由于NM在生理介质中的行为完全不同，因此特别注意能够确定NM的生物溶解度和复合行为的技术。选择具有相似尺寸的代表性NM：铝（Al〜（0））和氧化铝（Al _（2）O _（3）），以比较金属和金属氧化物的行为。另外，研究了二氧化钛（TiO _（2））。评估了诸如动态光散射（DLS）和纳米粒子跟踪分析（NTA）之类的表征技术，就其对颗粒的流体动力学直径和尺寸分布进行纳米颗粒分散体快速表征的适用性而言，进行了评估。通过以单粒子模式（SP-ICP-MS）应用电感耦合等离子体质谱法，对单个纳米粒子进行了定量和表征。 SP-ICP-MS测量值与使用其他表征技术获得的信息相关，即透射电子显微镜（TEM）和小角度X射线散射（SAXS）。通过X射线衍射（XRD）分析了作为NMs重要描述符的粒子表面。通过离子束显微镜（IBM）和共聚焦拉曼显微镜（CRM）确定NM杂质及其与生物分子的共定位。我们总结了所应用的不同技术的优缺点，并提出了对其进行补充的选项。因此，本文可作为颗粒表征技术的实用指南。

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