NDLI: Developing a millifluidic platform for the synthesis of ultrasmall nanoclusters: ultrasmall copper nanoclusters as a case study.

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Developing a millifluidic platform for the synthesis of ultrasmall nanoclusters: ultrasmall copper nanoclusters as a case study.

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Year: 2012 Volume: 8 Issue: 4

Year: 2012 Volume: 8 Issue: 3

Year: 2012 Volume: 8 Issue: 2

Year: 2012 Volume: 8 Issue: 1

Developing a millifluidic platform for the synthesis of ultrasmall nanoclusters: ultrasmall copper nanoclusters as a case study.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Biswas, Sanchita Miller, Jeffrey T. Li, Yuehao Nandakumar, Krishnaswamy Kumar, Challa S. S. R.
Description	Country affiliation: United States Author Affiliation: Biswas S ( Center for Advanced Microstructures and Devices (CAMD), Louisiana State University, 6980 Jefferson Highway, Baton Rouge, LA 70816, USA.)
Abstract	The future of lab-on-a-chip devices for the synthesis of nanomaterials hinges on the successful development of high-throughput methods with better control over their size. While significant effort in this direction mainly focuses on developing 'difficult to fabricate' complex microfluidic reactors, scant attention has been paid to the 'easy to fabricate' and simple millifluidic systems that could provide the required control as well as high throughput. By utilizing numerical simulation of fluids within the millifluidic space at different flow rates, the results presented here show velocity profiles and residence time distributions similar to the case of microfluidics. By significantly reducing the residence time and residence time distribution, a continuous flow synthesis of ultrasmall copper nanoclusters (UCNCs) with exceptional colloidal stability is achieved. In-situ synchrotron-radiation-based X-ray absorption spectroscopy (XAS) reveal that the as-prepared clusters are about 1 nm, which is further supported by transmission electron microscopy and UV-vis spectroscopy studies. The clusters reported here are the smallest ever produced using a lab-on-a-chip platform. When supported on silica, they are found to efficiently catalyze C-H oxidation reactions, hitherto unknown to be catalyzed by Cu. This work suggests that a millifluidic platform can be an inexpensive, versatile, easy-to-use, and powerful tool for nanoparticle synthesis in general, and more specifically for ultrasmall nanoclusters (UNCs).
File Format	HTM / HTML
ISSN	16136810
Issue Number	5
Journal	Small
Volume Number	8
e-ISSN	16136829
Language	English
Publisher	Wiley-VCH
Publisher Date	2012-03-12
Publisher Place	Germany
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article
Subject	Chemistry Nanoscience and Nanotechnology Medicine Biomaterials Engineering Biotechnology

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