Specialized metallurgical processes – compositions for use therei – Processes – Producing or purifying free metal powder or producing or...
Reexamination Certificate
2008-12-23
2011-11-22
Wyszomierski, George (Department: 1733)
Specialized metallurgical processes, compositions for use therei
Processes
Producing or purifying free metal powder or producing or...
C075S371000, C977S896000, C977S957000
Reexamination Certificate
active
08062407
ABSTRACT:
A relatively simple and inexpensive method for the synthesis of silver nanoparticles within a short period of time using a household microwave or the like is provided. The energy needed to heat the synthesis reaction is minimized and the organic reducing reagents of the prior art are replaced with natural products such as purified carbohydrates (e.g., glucose, sucrose, fructose, galactose, ribose, lactose) or their readily available and inexpensive forms (e.g., high fructose corn syrup, sucrose syrup). The resulting nanoparticles are purified from the remaining silver ion which is then recaptured for the safe disposal of the waste reaction mixture.
REFERENCES:
patent: 2006/0065075 (2006-03-01), Chang et al.
patent: 2007/0101824 (2007-05-01), Drzal et al.
patent: 2008/0058627 (2008-03-01), Hernandez
Mallikarjuna, N. et al., Microwave-Assisted Shape-Controlled Bulk Synthesis of Noble Nanocrystals and Their Catalytic Properties, Crystal Growth and Design, vol. 7, No. 4, pp. 686-690, published Feb. 22, 2007.
Husch & Blackwell LLP
Northwest Missouri State University
Wyszomierski George
LandOfFree
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