A new certified reference material for size analysis of nanoparticles

Adelina, Braun; Kestens, Vikram; Franks, Katrin; Roebben, Gert; Lamberty, A.; Linsinger, Thomas P. J.

doi:10.1007/s11051-012-1021-3

Cited by 31 publications

(32 citation statements)

References 12 publications

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“…The good comparability of results enabled the certification of the colloidal SiO 2 materials for NP size analysis. 544 The size measurement uncertainties of nearmonodisperse, near-spherical NPs composed of reference gold and polystyrene materials were compared in a paper by Mast and colleagues. PTA proved to be a precise and non-biased method for the determination of the modal hydrodynamic diameter in the range of 30-200 nm.…”

Section: Focus On Np Sizedistinct Examples Of Characterization With Dmentioning

confidence: 99%

Characterization techniques for nanoparticles: comparison and complementarity upon studying nanoparticle properties

2018

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Nanostructures have attracted huge interest as a rapidly growing class of materials for many applications. Several techniques have been used to characterize the size, crystal structure, elemental composition and a variety of other physical properties of nanoparticles. In several cases, there are physical properties that can be evaluated by more than one technique. Different strengths and limitations of each technique complicate the choice of the most suitable method, while often a combinatorial characterization approach is needed. In addition, given that the significance of nanoparticles in basic research and applications is constantly increasing, it is necessary that researchers from separate fields overcome the challenges in the reproducible and reliable characterization of nanomaterials, after their synthesis and further process (e.g. annealing) stages. The principal objective of this review is to summarize the present knowledge on the use, advances, advantages and weaknesses of a large number of experimental techniques that are available for the characterization of nanoparticles. Different characterization techniques are classified according to the concept/group of the technique used, the information they can provide, or the materials that they are destined for. We describe the main characteristics of the techniques and their operation principles and we give various examples of their use, presenting them in a comparative mode, when possible, in relation to the property studied in each case.

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Section: Focus On Np Sizedistinct Examples Of Characterization With Dmentioning

confidence: 99%

Characterization techniques for nanoparticles: comparison and complementarity upon studying nanoparticle properties

2018

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“…More importantly, in emerging measurement fields, such as in the measurement of material properties at the nanoscale, the traceability and uncertainty requirements imply that the development of CRMs is often not (yet) possible. This explains why the number of nanoparticle CRMs is still very limited (e.g., Braun et al, 2012 ; Stefaniak et al, 2013 ).…”

Section: Introductionmentioning

confidence: 99%

Reference materials and representative test materials to develop nanoparticle characterization methods: the NanoChOp project case

et al. 2015

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This paper describes the production and characteristics of the nanoparticle test materials prepared for common use in the collaborative research project NanoChOp (Chemical and optical characterization of nanomaterials in biological systems), in casu suspensions of silica nanoparticles and CdSe/CdS/ZnS quantum dots (QDs). This paper is the first to illustrate how to assess whether nanoparticle test materials meet the requirements of a “reference material” (ISO Guide 30, 2015) or rather those of the recently defined category of “representative test material (RTM)” (ISO/TS 16195, 2013). The NanoChOp test materials were investigated with small-angle X-ray scattering (SAXS), dynamic light scattering (DLS), and centrifugal liquid sedimentation (CLS) to establish whether they complied with the required monomodal particle size distribution. The presence of impurities, aggregates, agglomerates, and viable microorganisms in the suspensions was investigated with DLS, CLS, optical and electron microscopy and via plating on nutrient agar. Suitability of surface functionalization was investigated with attenuated total reflection Fourier transform infrared spectrometry (ATR-FTIR) and via the capacity of the nanoparticles to be fluorescently labeled or to bind antibodies. Between-unit homogeneity and stability were investigated in terms of particle size and zeta potential. This paper shows that only based on the outcome of a detailed characterization process one can raise the status of a test material to RTM or reference material, and how this status depends on its intended use.

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“…Silica particles or silica glass surfaces are commonly used as model systems and reference material in coagulation studies, and in rheology, surface force, and contact angle measurements [7]. Many particle size reference materials are based on silica [8]. Colloidal silica is also used extensively in a range of industrial applications, such as flocculation, polishing and ceramics [9], as an additive in cementitious applications [10], or as grouting material [11, 12].…”

Section: Introductionmentioning

confidence: 99%

Intermethod comparison of the particle size distributions of colloidal silica nanoparticles

Tuoriniemi

Johnsson

Holmberg

et al. 2014

Science and Technology of Advanced Materials

100

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There can be a large variation in the measured diameter of nanoparticles depending on which method is used. In this work, we have strived to accurately determine the mean particle diameter of 30–40 nm colloidal silica particles by using six different techniques. A quantitative agreement between the particle size distributions was obtained by scanning electron microscopy (SEM), and electrospray-scanning mobility particle sizer (ES-SMPS). However, transmission electron microscopy gave a distribution shifted to smaller sizes. After confirming that the magnification calibration was consistent, this was attributed to sample preparation artifacts. The hydrodynamic diameter, d h, was determined by dynamic light scattering (DLS) both in batch mode, and hyphenated with sedimentation field flow fractionation. Surprisingly the d h were smaller than the SEM, and ES-SMPS diameters. A plausible explanation for the smaller sizes found with DLS is that a permeable gel layer forms on the particle surface. Results from nanoparticle tracking analysis were strongly biased towards larger diameters, most likely because the silica particles provide low refractive index contrast. Calculations confirmed that the sensitivity is, depending on the shape of the laser beam, strongly size dependent for particles with diameters close to the visualization limit.

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A new certified reference material for size analysis of nanoparticles

Cited by 31 publications

References 12 publications

Characterization techniques for nanoparticles: comparison and complementarity upon studying nanoparticle properties

Characterization techniques for nanoparticles: comparison and complementarity upon studying nanoparticle properties

Reference materials and representative test materials to develop nanoparticle characterization methods: the NanoChOp project case

Intermethod comparison of the particle size distributions of colloidal silica nanoparticles

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