Preparation of ultrafine silver powder using glycerol as reducing agent
Keywords:
silver nanoparticles, silver powder, control of sizeAbstract
The production of silver nanoparticles and sub-micron particles can be achieved by silver alkoxide from silver sulfate and subsequently reducing with glycerol. To reduce the particle size of silver sulfate precursors, ball milling was employed to reduce particle sizes down to 0.81 microns. However, silver sulfate without grinding provided smaller particle sizes of silver particles as opposed to ground specimens. Stirring silver alkoxide simultaneously was efficient to provide for uniform distribution of silver powder. The silver powder thus produced had brain-like shape consisted of very fine aggregate silver particles. The yield of silver powder was in the range of 95-99 %. Silver powder had fcc crystal structure by X-ray diffraction (XRD). The average particle size and powder cluster sizes were in the range of 60 to 250 nanometers and from 6 to 30 microns, respectively. The surface areas were approximately 1.1-2.9 m2/g and apparent densities were from 0.6 to 1.2 g/cm3.Downloads
References
Nersisyan, H.H., Lee, J.H. and Son, H.T. 2003. A new and effective chemical reduction method for preparation of nanosized silver powder and colloid dispersion. Mater. Res. Bull. 38(6) : 949-956.
Khanna, P.K. and Subbarao, V.V.V.S. 2003. Nanosized silver powder via reduction of silver nitrate by sodium formaldehydesulfoxylate in acidic pH medium. Mater. Lett. 57(15) : 2242-2245.
Sondi, I., Goia, D.V. and Matijevic, E. 2003. Preparation of highly concentrated stable dispersions of uniform silver nanoparticles. J. Colloid Interface Sci. 260 : 75-81.
Sinha, A. and Sharma, B.P. 2005. Preparation of silver powder through glycerol process. Bull. Mater.Sci. 28(3) : 213-217.
Klar, E.R. 1998. Powder Metallurgy. Materials Park, OH : ASM Internation. 9th ed. Vol.7.
Li, Y., Duan, X., Qian, Y., Yang, L. and Liao, H. 1999. Duan.Xiangfeng Nanocrystalline silver particles: synthesis, agglomeration, and sputtering induced by electron beam. J. Colloid Interface Sci. 209 : 347-349.
Cullity, B. D. 1956. Elements of X-Ray diffraction Reading, Mass. : Addison Wesley Pub. Co.
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2017 Journal of Metals, Materials and Minerals
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Authors who publish in this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgment of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgment of its initial publication in this journal.