Dispersion of Nanomaterials in Aqueous Media: Towards Protocol Optimization.
Dispersion of Nanomaterials in Aqueous Media: Towards Protocol Optimization.
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DOI：
10.3791/56074
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发表时间：
2017-12-25
期刊：
影响因子：
--
通讯作者：
Valsami-Jones E
中科院分区：
文献类型：
--
作者：
Kaur I;Ellis LJ;Romer I;Tantra R;Carriere M;Allard S;Mayne-L'Hermite M;Minelli C;Unger W;Potthoff A;Rades S;Valsami-Jones E
超声法通常用于纳米材料在水基介质中的解聚和分散，这是提高悬浮液的均匀性和稳定性所必需的。在这项研究中，系统的逐步方法被用来确定最佳的超声条件，以实现稳定的分散。这种方法已经被采用，并被证明适用于分散在去离子(DI)水中的几种纳米材料(氧化铈、氧化锌和碳纳米管)。然而，无论是纳米材料类型还是分散介质的任何变化，都需要通过调整超声时间、功率、声化器类型以及过程中的温度升高等各种因素来优化基本方案。该方法详细记录了弥散过程。这对于识别超声波过程中可能存在不良变化的时间点以及其他上述条件是必要的，例如对颗粒表面的损害，从而影响表面特性。我们的目标是提供一种协调的方法，可以控制最终生产的分散体的质量。这样的指导方针有助于确保纳米科学界，特别是在纳米毒理学领域的分散质量重复性。
The sonication process is commonly used for de-agglomerating and dispersing nanomaterials in aqueous based media, necessary to improve homogeneity and stability of the suspension. In this study, a systematic step-wise approach is carried out to identify optimal sonication conditions in order to achieve a stable dispersion. This approach has been adopted and shown to be suitable for several nanomaterials (cerium oxide, zinc oxide, and carbon nanotubes) dispersed in deionized (DI) water. However, with any change in either the nanomaterial type or dispersing medium, there needs to be optimization of the basic protocol by adjusting various factors such as sonication time, power, and sonicator type as well as temperature rise during the process. The approach records the dispersion process in detail. This is necessary to identify the time points as well as other above-mentioned conditions during the sonication process in which there may be undesirable changes, such as damage to the particle surface thus affecting surface properties. Our goal is to offer a harmonized approach that can control the quality of the final, produced dispersion. Such a guideline is instrumental in ensuring dispersion quality repeatability in the nanoscience community, particularly in the field of nanotoxicology.
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DOI：
10.1088/1475-7516/2011/06/012
发表时间：
2011-06-01
影响因子：
6.4
作者：
Chen, Xingang
通讯作者：
Chen, Xingang
影响因子：
5.2
作者：
Mandzy, N;Grulke, E;Druffel, T
通讯作者：
Druffel, T
影响因子：
8.4
作者：
Raso, J;Mañas, P;Sala, FJ
通讯作者：
Sala, FJ
影响因子：
2.7
作者：
Mavrocordatos, D;Pronk, W;Boller, M
通讯作者：
Boller, M
影响因子：
3.3
作者：
Matarredona, O;Rhoads, H;Resasco, DE
通讯作者：
Resasco, DE