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Issue 4, 2010
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Continuous flow synthesis of functionalized silver nanoparticles using bifunctional biosurfactants

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Abstract

Silver nanoparticles were synthesized by continuous flow methods using biosurfactants, namely, oleic acid sophorolipid (OASL) and stearic acid sophorolipid (SASL). Both the sophorolipids can act as reducing and capping agents. The effect of temperature on the completion of nanoparticle formation and the particle growth dynamics (size) were studied in batch mode. While the completion of the reaction using oleic acid sophorolipid needed 20 min, only 5 min were required with the stearic acid sophorolipid as capping and reducing agent. Hence all the continuous flow experiments were carried out using the stearic acid sophorolipid. The continuous flow synthesis of silver nanoparticles was carried out in a stainless steel helical coil and also in a spiral polymeric minichannel reactor. The DLS results show that higher flow rate leads to the formation of bigger and polydisperse particles because of incomplete reactions. Higher residence time allowed the completion of reaction leading to spherical, small and monodisperse particles.

Graphical abstract: Continuous flow synthesis of functionalized silver nanoparticles using bifunctional biosurfactants

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Publication details

The article was received on 21 Sep 2009, accepted on 10 Dec 2009 and first published on 04 Feb 2010


Article type: Paper
DOI: 10.1039/B919550E
Green Chem., 2010,12, 609-615

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    Continuous flow synthesis of functionalized silver nanoparticles using bifunctional biosurfactants

    D. V. R. Kumar, M. Kasture, A. A. Prabhune, C. V. Ramana, B. L. V. Prasad and A. A. Kulkarni, Green Chem., 2010, 12, 609
    DOI: 10.1039/B919550E

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