Quantification of nanoparticle concentration in colloidal suspensions by a non-destructive optical method
Clement S., Gardner B., Razali W. A. W., Coleman V. A., Jamting A. K., Catchpoole H. J., Goldys E. M., Herrmann J., Zvyagin A. V.
Nanotechnology
Vol.28, Issue47, Num.475702
Опубликовано: 2017
Тип ресурса: Статья
DOI:10.1088/1361-6528/aa8d89
Аннотация:
The estimation of nanoparticle number concentration in colloidal suspensions is a prerequisite in many procedures, and in particular in multi-stage, low-yield reactions. Here, we describe a rapid, non-destructive method based on optical extinction and dynamic light scattering (DLS), which combines measurements using common bench-top instrumentation with a numerical algorithm to calculate the particle size distribution (PSD) and concentration. These quantities were derived from Mie theory applied to measurements of the optical extinction spectrum of homogeneous, non-absorbing nanoparticles, and the relative PSD of a colloidal suspension. The work presents an approach to account for PSDs achieved by DLS which, due to the underlying model, may not be representative of the true sample PSD. The presented approach estimates the absolute particle number concentration of samples with mono-, bi-modal and broad size distributions with <50[%] precision. This provides a convenient and practical solu
Ключевые слова:
dynamic light scattering; extinction spectra; Mie scattering; Nanoparticle concentration; nanoruby; particle size distribution; silica nanoparticles
Dynamic light scattering; Light absorption; Light extinction; Light scattering; Light transmission; Nanoparticles; Nondestructive examination; Numerical methods; Particle size; Particle size analysis; Silica; Size distribution; Extinction spectra; Mie scattering; Nanoparticle concentrations; nanoruby; Silica nanoparticles; Suspensions (fluids)
Язык текста: Английский
ISSN: 1361-6528
Clement S.
Gardner B.
Razali W. A. W.
Coleman V. A.
Jamting A. K.
Catchpoole H. J.
Goldys E. M.
Herrmann J.
Zvyagin A. V. Andrej Vasilyevich 1961-
Cлемент С.
Гарднер Б.
Разали W. А. W.
Cолеман В. А.
Йамтинг А. К.
Cатчпооле Х. Й.
Голдyс Е. М.
Херрманн Й.
Звягин А. В. Андрей Васильевич 1961-
Quantification of nanoparticle concentration in colloidal suspensions by a non-destructive optical method
Текст визуальный непосредственный
Nanotechnology
Institute of Physics and IOP Publishing Limited
Vol.28, Issue47 Num.475702
2017
Статья
dynamic light scattering extinction spectra Mie scattering Nanoparticle concentration nanoruby particle size distribution silica nanoparticles
Dynamic light scattering Light absorption Light extinction Light scattering Light transmission Nanoparticles Nondestructive examination Numerical methods Particle size Particle size analysis Silica Size distribution Extinction spectra Mie scattering Nanoparticle concentrations nanoruby Silica nanoparticles Suspensions (fluids)
The estimation of nanoparticle number concentration in colloidal suspensions is a prerequisite in many procedures, and in particular in multi-stage, low-yield reactions. Here, we describe a rapid, non-destructive method based on optical extinction and dynamic light scattering (DLS), which combines measurements using common bench-top instrumentation with a numerical algorithm to calculate the particle size distribution (PSD) and concentration. These quantities were derived from Mie theory applied to measurements of the optical extinction spectrum of homogeneous, non-absorbing nanoparticles, and the relative PSD of a colloidal suspension. The work presents an approach to account for PSDs achieved by DLS which, due to the underlying model, may not be representative of the true sample PSD. The presented approach estimates the absolute particle number concentration of samples with mono-, bi-modal and broad size distributions with <50[%] precision. This provides a convenient and practical solu