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Quantifying the Nucleation and Growth Kinetics of Microwave Nanochemistry Enabled by in Situ High-Energy X-ray Scattering.
Nano Lett. 2016 Jan 13; 16(1):715-20.NL

Abstract

The fast reaction kinetics presented in the microwave synthesis of colloidal silver nanoparticles was quantitatively studied, for the first time, by integrating a microwave reactor with in situ X-ray diffraction at a high-energy synchrotron beamline. Comprehensive data analysis reveals two different types of reaction kinetics corresponding to the nucleation and growth of the Ag nanoparticles. The formation of seeds (nucleation) follows typical first-order reaction kinetics with activation energy of 20.34 kJ/mol, while the growth of seeds (growth) follows typical self-catalytic reaction kinetics. Varying the synthesis conditions indicates that the microwave colloidal chemistry is independent of concentration of surfactant. These discoveries reveal that the microwave synthesis of Ag nanoparticles proceeds with reaction kinetics significantly different from the synthesis present in conventional oil bath heating. The in situ X-ray diffraction technique reported in this work is promising to enable further understanding of crystalline nanomaterials formed through microwave synthesis.

Authors+Show Affiliations

Center for Nanoscale Materials and ‡X-ray Science Division, Advanced Photon Source, Argonne National Laboratory , 9700 South Cass Avenue, Argonne, Illinois 60439, United States.Center for Nanoscale Materials and ‡X-ray Science Division, Advanced Photon Source, Argonne National Laboratory , 9700 South Cass Avenue, Argonne, Illinois 60439, United States.Center for Nanoscale Materials and ‡X-ray Science Division, Advanced Photon Source, Argonne National Laboratory , 9700 South Cass Avenue, Argonne, Illinois 60439, United States.Center for Nanoscale Materials and ‡X-ray Science Division, Advanced Photon Source, Argonne National Laboratory , 9700 South Cass Avenue, Argonne, Illinois 60439, United States.Center for Nanoscale Materials and ‡X-ray Science Division, Advanced Photon Source, Argonne National Laboratory , 9700 South Cass Avenue, Argonne, Illinois 60439, United States.Center for Nanoscale Materials and ‡X-ray Science Division, Advanced Photon Source, Argonne National Laboratory , 9700 South Cass Avenue, Argonne, Illinois 60439, United States.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

26625184

Citation

Liu, Qi, et al. "Quantifying the Nucleation and Growth Kinetics of Microwave Nanochemistry Enabled By in Situ High-Energy X-ray Scattering." Nano Letters, vol. 16, no. 1, 2016, pp. 715-20.
Liu Q, Gao MR, Liu Y, et al. Quantifying the Nucleation and Growth Kinetics of Microwave Nanochemistry Enabled by in Situ High-Energy X-ray Scattering. Nano Lett. 2016;16(1):715-20.
Liu, Q., Gao, M. R., Liu, Y., Okasinski, J. S., Ren, Y., & Sun, Y. (2016). Quantifying the Nucleation and Growth Kinetics of Microwave Nanochemistry Enabled by in Situ High-Energy X-ray Scattering. Nano Letters, 16(1), 715-20. https://doi.org/10.1021/acs.nanolett.5b04541
Liu Q, et al. Quantifying the Nucleation and Growth Kinetics of Microwave Nanochemistry Enabled By in Situ High-Energy X-ray Scattering. Nano Lett. 2016 Jan 13;16(1):715-20. PubMed PMID: 26625184.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Quantifying the Nucleation and Growth Kinetics of Microwave Nanochemistry Enabled by in Situ High-Energy X-ray Scattering. AU - Liu,Qi, AU - Gao,Min-Rui, AU - Liu,Yuzi, AU - Okasinski,John S, AU - Ren,Yang, AU - Sun,Yugang, Y1 - 2015/12/02/ PY - 2015/12/2/entrez PY - 2015/12/2/pubmed PY - 2015/12/2/medline KW - Microwave nanochemistry KW - first-order reaction kinetics KW - in situ high-energy X-ray diffraction KW - self-catalytic reaction kinetics KW - silver nanoparticles SP - 715 EP - 20 JF - Nano letters JO - Nano Lett VL - 16 IS - 1 N2 - The fast reaction kinetics presented in the microwave synthesis of colloidal silver nanoparticles was quantitatively studied, for the first time, by integrating a microwave reactor with in situ X-ray diffraction at a high-energy synchrotron beamline. Comprehensive data analysis reveals two different types of reaction kinetics corresponding to the nucleation and growth of the Ag nanoparticles. The formation of seeds (nucleation) follows typical first-order reaction kinetics with activation energy of 20.34 kJ/mol, while the growth of seeds (growth) follows typical self-catalytic reaction kinetics. Varying the synthesis conditions indicates that the microwave colloidal chemistry is independent of concentration of surfactant. These discoveries reveal that the microwave synthesis of Ag nanoparticles proceeds with reaction kinetics significantly different from the synthesis present in conventional oil bath heating. The in situ X-ray diffraction technique reported in this work is promising to enable further understanding of crystalline nanomaterials formed through microwave synthesis. SN - 1530-6992 UR - https://www.unboundmedicine.com/medline/citation/26625184/Quantifying_the_Nucleation_and_Growth_Kinetics_of_Microwave_Nanochemistry_Enabled_by_in_Situ_High_Energy_X_ray_Scattering_ L2 - https://doi.org/10.1021/acs.nanolett.5b04541 DB - PRIME DP - Unbound Medicine ER -
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