Green manufacturing of metallic nanoparticles: A facile and universal approach to scaling up
Jicheng Feng (TU Delft - ChemE/Materials for Energy Conversion and Storage)
Xiaoai Guo (Karlsruhe Institut für Technologie)
N. Ramlawi (TU Delft - ChemE/Materials for Energy Conversion and Storage)
Tobias Pfeiffer (TU Delft - ChemE/Materials for Energy Conversion and Storage)
Ruben Geutjens (TU Delft - ChemE/Materials for Energy Conversion and Storage)
S Basak (TU Delft - QN/Zandbergen Lab)
Hermann Nirschl (Karlsruhe Institut für Technologie)
George Biskos (TU Delft - Atmospheric Remote Sensing, The Cyprus Institute, TU Delft - ChemE/Materials for Energy Conversion and Storage)
H.W. Zandbergen (TU Delft - QN/Zandbergen Lab)
A. Schmidt-Ott (TU Delft - ChemE/Materials for Energy Conversion and Storage)
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Abstract
High-yield and continuous synthesis of ultrapure inorganic nanoparticles (NPs) of well-defined size and composition has invariably been one of the major challenges in nanotechnology. Employing green techniques that avoid the use of poisonous and expensive chemicals has been realized as a necessity for manufacturing NPs on an industrial scale. In this communication, we show that a newly developed high-frequency spark (HFS) quenched by a high-purity gas yields a series of monometallic and bimetallic NPs in large quantities, with well-defined (primary) particle size (sub-10 nm) and chemical composition. The mass production rate is linearly dependent on the operating frequency, and can reach up to 1 g h−1, providing a universal and facile technology for producing multicomponent hybrid NPs. Considering also that the methodology requires neither any specialized machinery, nor any chemical reagents, product purification, or any further waste processing, it provides a green, sustainable and versatile platform for manufacturing key building blocks toward industrial scale production.
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