Abstract
In the present paper, we have described the interesting behavior of molybdophosphoric acid (H3[PMo12O40], HPMo) in the size-controlled synthesis of silver nanoparticles under UV-irradiation. In this process which is based on the reduction of Ag+ (AgNO3), HPMo plays the role of photocatalyst, reducing agent as well as stabilizer, and propan-2-ol acts as a sacrificial agent. The method allows the rapid synthesis of uniform spherical nanoparticles with an average size that varies between 2.2 and 35.2 nm by altering the silver ion concentration, molar ratio of silver ion to HPMo (or dose of HPMo) and Propan-2-ol amount. It is found that there is a critical ratio for [Ag+]/[HPMo] (i.e. 3.8 in the present case), in which two opposing trends in the size of silver nanoparticles take place.
Keywords: Molybdophosphoric acid, polyoxometalate, silver, nanoparticle, UV irradiation
Current Nanoscience
Title:Green, Rapid and Facile HPMo-Assisted Synthesis of Silver Nanoparticles
Volume: 8 Issue: 6
Author(s): Ali Ahmadpour, Bahareh Tanhaei, Fatemeh F. Bamoharram, Ali Ayati and Mika Sillanpaa
Affiliation:
Keywords: Molybdophosphoric acid, polyoxometalate, silver, nanoparticle, UV irradiation
Abstract: In the present paper, we have described the interesting behavior of molybdophosphoric acid (H3[PMo12O40], HPMo) in the size-controlled synthesis of silver nanoparticles under UV-irradiation. In this process which is based on the reduction of Ag+ (AgNO3), HPMo plays the role of photocatalyst, reducing agent as well as stabilizer, and propan-2-ol acts as a sacrificial agent. The method allows the rapid synthesis of uniform spherical nanoparticles with an average size that varies between 2.2 and 35.2 nm by altering the silver ion concentration, molar ratio of silver ion to HPMo (or dose of HPMo) and Propan-2-ol amount. It is found that there is a critical ratio for [Ag+]/[HPMo] (i.e. 3.8 in the present case), in which two opposing trends in the size of silver nanoparticles take place.
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Cite this article as:
Ahmadpour Ali, Tanhaei Bahareh, F. Bamoharram Fatemeh, Ayati Ali and Sillanpaa Mika, Green, Rapid and Facile HPMo-Assisted Synthesis of Silver Nanoparticles, Current Nanoscience 2012; 8 (6) . https://dx.doi.org/10.2174/157341312803988953
DOI https://dx.doi.org/10.2174/157341312803988953 |
Print ISSN 1573-4137 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-6786 |
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