+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Simultaneous SAXS/WAXS/UV-Vis Study of the Nucleation and Growth of Nanoparticles: A Test of Classical Nucleation Theory



Simultaneous SAXS/WAXS/UV-Vis Study of the Nucleation and Growth of Nanoparticles: A Test of Classical Nucleation Theory



Langmuir 31(42): 11678-11691



Despite the increasing interest in the applications of functional nanoparticles, a comprehensive understanding of the formation mechanism starting from the precursor reaction with subsequent nucleation and growth is still a challenge. We for the first time investigated the kinetics of gold nanoparticle formation systematically by means of a lab-based in situ small-angle X-ray scattering (SAXS)/wide-angle X-ray scattering (WAXS)/UV-vis absorption spectroscopy experiment using a stopped-flow apparatus. We thus could systematically investigate the influence of all major factors such as precursor concentration, temperature, the presence of stabilizing ligands and cosolvents on the temporal evolution of particle size, size distribution, and optical properties from the early prenucleation state to the late growth phase. We for first time formulated and numerically solved a closed nucleation and growth model including the precursor reaction. We observe that the results can be well described within the framework of classical nucleation and growth theory, including also results of previous studies by other research groups. From the analysis, we can quantitatively derive values for the rate constants of precursor reaction and growth together with their activation free enthalpies. We find the growth process to be surface-reaction limited with negligible influence of Ostwald ripening yielding narrow disperse gold nanoparticles.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 058856333

Download citation: RISBibTeXText

PMID: 26393805

DOI: 10.1021/acs.langmuir.5b02759


Related references

Complete thermodynamically consistent kinetic model of particle nucleation and growth: numerical study of the applicability of the classical theory of homogeneous nucleation. Journal of Chemical Physics 126(14): 144504, 2007

On the interpretation of quantitative experimental data on nucleation rates using classical nucleation theory. Journal of Physical Chemistry. B 110(43): 21944-9, 2006

Ice nucleation on carbon surface supports the classical theory for heterogeneous nucleation. Physical Review. E Statistical Nonlinear and Soft Matter Physics 91(5): 052402, 2015

Ice Nucleation of Confined Monolayer Water Conforms to Classical Nucleation Theory. Journal of Physical Chemistry Letters 10(11): 3115-3121, 2019

Homogeneous nucleation of n-nonane and n-propanol mixtures: a comparison of classical nucleation theory and experiments. Journal of Chemical Physics 123(24): 244502, 2005

Modeling photoacoustic cavitation nucleation and bubble dynamics with modified classical nucleation theory. Journal of the Acoustical Society of America 138(3): 1282-1289, 2015

Vapor-liquid nucleation in two dimensions: on the intriguing sign switch of the errors of the classical nucleation theory. Journal of Chemical Physics 137(19): 194304, 2012

Direct simulations of homogeneous bubble nucleation: Agreement with classical nucleation theory and no local hot spots. PhysicalReview.E,Statistical,Nonlinear,andSoftMatterPhysics90(5-1):052407, 2014

Nucleation and growth of silica nanoparticles; an in situ SAXS and DLS study. Geochimica et Cosmochimica Acta 70(18): A652, 2006

Kinetic model for binary homogeneous nucleation in the H2O-H2SO4 system: comparison with experiments and classical theory of nucleation. Journal of Chemical Physics 123(24): 244508, 2005

Understanding Hygroscopic Nucleation of Sulfate Aerosols: Combination of Molecular Dynamics Simulation with Classical Nucleation Theory. Journal of Physical Chemistry Letters 10(5): 1126-1132, 2019

Hit and miss of classical nucleation theory as revealed by a molecular simulation study of crystal nucleation in supercooled sulfur hexafluoride. Journal of Chemical Physics 127(4): 044504, 2007

Nucleation kinetics in deionized charged colloidal model systems: a quantitative study by means of classical nucleation theory. Physical Review. E Statistical Nonlinear and Soft Matter Physics 75(5 Pt 1): 051405, 2007

Classical nucleation theory from a dynamical approach to nucleation. Journal of Chemical Physics 138(24): 244908, 2013

Inclusion of line tension effect in classical nucleation theory for heterogeneous nucleation: A rigorous thermodynamic formulation and some unique conclusions. Journal of Chemical Physics 142(10): 104706, 2015