pH effect on the aggregation of silver nanoparticles synthesized by chemical reduction

• Autorzy: Alqadi, M. K. , Noqtah, O. A. , Alzouby, J. , Aljarrah, K. , Alzoubi, F. Y.
• Języki publikacji: EN

Abstrakty

EN

Silver colloidal nanoparticles were prepared according to the chemical reduction method in which the ascorbic acid was used as a reducing agent and sodium citrate as a stabilizing agent. The absorption spectra of all prepared samples obtained using the UV-Vis spectrophotometer showed a surface plasmon peak at a wavelength of about 420 nm. The size of the silver nanoparticles was controlled by changing the pH values of the reaction system. At high pH, smaller size silver nanoparticles were obtained compared to low pH values. This difference can be attributed to the difference in the reduction rate of the precursor. In addition to the inverse proportionality between the size and the pH value it is clear that increasing the pH value enables us to obtain spherical nanoparticles while at low pH, rods and triangular particle shapes were formed. Poor balance between nucleation and growth processes could be the cause of this result.

Słowa kluczowe

EN

silver nanoparticles; pH; chemical synthesis

• Czasopismo: Materials Science Poland
• Rocznik: 2014
• Tom: Vol. 32, No. 1
• Strony: 107--111
• Opis fizyczny: Bibliogr. 10 poz., rys., wyk., tab.

Twórcy

autor

Alqadi, M. K.

• Physics Department, Jordan University of Science and Technology, Irbid, Jordan,

autor

Noqtah, O. A.

• Physics Department, Jordan University of Science and Technology, Irbid, Jordan

autor

Alzouby, J.

• Al-Huson University College, Al-Balqa applied University, Huson-Irbid
• silver nanoparticles; pH; chemical synthesis

autor

Aljarrah, K.

• Al-Huson University College, Al-Balqa applied University, Huson-Irbid

autor

Alzoubi, F. Y.

• Physics Department, Jordan University of Science and Technology, Irbid, Jordan

Bibliografia

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Identyfikatory

DOI

10.2478/s13536-013-0166-9