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Autonomously Propelled Motors for Value-Added Product Synthesis and Purification
Sarvesh K Srivastava1, Oliver G Schmidt2
1Institute for Integrative Nanosciences, IFW Dresden, Helmholtzstrasse 20, 01069, Dresden, Germany. sarvesh.kumar@ifw-dresden.de.
Chemistry (Weinheim an Der Bergstrasse, Germany)
|April 29, 2016
Summary
Researchers developed self-propelling micro-motors for chemical synthesis and separation. These motors use sodium borohydride (NaBH4) fuel and a graphene-polymer cap to efficiently produce and isolate valuable products like vanillyl alcohol (VA).
Area of Science:
- Materials Science
- Chemical Engineering
- Nanotechnology
Background:
- Autonomous micro-motors offer potential for advanced chemical processes.
- Efficient synthesis and separation of value-added products remain a key industrial challenge.
Purpose of the Study:
- To present a proof-of-concept for autonomous, self-propelling micro-motors.
- To demonstrate their utility in synthesizing and separating value-added products.
Main Methods:
- Fabrication of hybrid micro-motors (down to 400 μm) with a sodium borohydride (NaBH4) fuel block and a graphene-polymer composite cap.
- Utilizing the NaBH4 granule as both a reactant and fuel for self-propulsion.
- Employing the hydrophobic graphene-polymer cap for affinity-based product attraction and separation.
Main Results:
- Achieved rapid, bubble-propelled motion of the micro-motors.
- Demonstrated high-purity separation of vanillyl alcohol (VA) using the graphene-polymer cap as a mesoporous sponge.
- Successfully synthesized and isolated an edible value-added product.
Conclusions:
- The developed micro-motors show significant potential for industrial synthesis and isolation of compounds.
- The technology can be applied to affinity-based product separation and pollutant remediation.
- Offers an alternative to external fuel dependency with localized fuel-gradients.
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