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US 12,318,844 B2Granted
Continuous flow process for the synthesis of metal nanowires using bubble column reactor
AssigneeCouncil of Scientific and Industrial Research
InventorsAmol Arvind Kulkarni, Prachi Kate, Suneha Patil
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Abstract
A continuous flow process for the synthesis of metal nanowires using a bubble column reactor. Also disclosed are different types of multiphase bubble column reactors for synthesizing metal nanowires in high yields and purity through a continuous process. The continuous process provides tunability for the aspect ratio of the nanowires.
Claims10
A continuous flow process for the synthesis of metal nanowires, wherein the said process employs at least one unstirred bubble column reactor, and wherein the said process comprises the steps of:
- a) dissolving a metal salt in ethylene glycol to obtain a solution A;
- b) preheating ethylene glycol and dissolving poly (vinyl pyrrolidone) (PVP 40,000-360,000) to obtain a solution B;
- c) continuously feeding a blend of the solution A, solution B and a solution of FeCl3 in ethylene glycol to the at least one unstirred bubble column reactor from a bottom inlet;
- d) maintaining the temperature in each reactor at 130-190° C., with a cumulative residence time of 25-80 min;
- and
- e) allowing the growth of nanowires of the metal to the desired dimensions,
- wherein the aspect ratio of said nanowire is tunable in the range of 300 to 1200 with 100% purity, and the conversion of metal salt is in the range of 85% to 95%.
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Dependencies are inferred from the claim text.