期刊
SMALL
卷 9, 期 20, 页码 3462-3467出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.201203132
关键词
fluidic devices; droplet-based microreactors; palladium; nanocrystals
类别
资金
- NSF (DMR) [1215034]
- Georgia Institute of Technology
- World Class University (WCU) program through the National Research Foundation of Korea
- Ministry of Education, Science and Technology [R32-20031]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1215034] Funding Source: National Science Foundation
- National Research Council of Science & Technology (NST), Republic of Korea [KK-1302, KK-1302-D0] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Droplet-based microreactors are used for the continuous production of Pd nanocrystals. Specifically, commercially available polytetrafluoroethylene (PTFE) tube and silica capillaries are utilized to fabricate a fluidic device capable of generating water-in-oil droplets. In addition to the feasibility of using such droplets as microreactors for conducting a synthesis, the ability to control the composition and concentration of reagents by adjusting the flow rates is demonstrated; reagents are mixed by periodically pinching the PTFE tube, and nanocrystals are produced with uniform size distribution in a continuous fashion. The capability to tailor the size and shape of the resultant nanocrystals is further demonstrated by introducing the reducing agent and capping agent at different flow rates to control the nucleation and growth processes. The ability to transform a bulk synthesis into a droplet-based system holds great potential for the development of a new route to the high-volume production of nanocrystals.
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