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Removing Strongly Adsorbed Surfactants and Capping Agents from Nanostructures

Brookhaven National Laboratory

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Technology Marketing Summary

During production, nanostructures are often capped by surfactants or other capping agents to keep them from agglomerating. These moieties often interfere with the properties of the nanostructures, and must be removed before further processing can occur. This technology is directed toward removing even strongly adsorbed surfactants and capping agents from metal, metal alloy, and core-shell nanostructures without damaging the nanostructure surface, facilitating their applications in catalysis.  This technique can be applied by manufacturers of nanoparticles and nanoparticle containing intermediates.



Patents and Patent Applications
ID Number
Title and Abstract
Primary Lab
Patent 9,490,486
Method for removing strongly adsorbed surfactants and capping agents from metal to facilitate their catalytic applications
A method of synthesizing activated electrocatalyst, preferably having a morphology of a nanostructure, is disclosed. The method includes safely and efficiently removing surfactants and capping agents from the surface of the metal structures. With regard to metal nanoparticles, the method includes synthesis of nanoparticle(s) in polar or non-polar solution with surfactants or capping agents and subsequent activation by CO-adsorption-induced surfactant/capping agent desorption and electrochemical oxidation. The method produces activated macroparticle or nanoparticle electrocatalysts without damaging the surface of the electrocatalyst that includes breaking, increasing particle thickness or increasing the number of low coordination sites.
Brookhaven National Laboratory 11/08/2016
Technology Status
Technology IDDevelopment StageAvailabilityPublishedLast Updated
BSA 11-21DevelopmentAvailable03/11/201104/22/2013

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To: Poornima Upadhya<>