Journal
JOURNAL OF APPLIED ELECTROCHEMISTRY
Volume 51, Issue 7, Pages 1093-1100Publisher
SPRINGER
DOI: 10.1007/s10800-021-01560-2
Keywords
Magnetite; Nanoparticle electrosynthesis; Nanoparticles; Iron oxides; Tubular reactor
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The newly developed tubular electrochemical system (TES) overcomes scalability and sustainability challenges in synthesizing superparamagnetic iron oxide (Fe3O4) nanoparticles (SPIONs). TES operates efficiently with electrolyte reuse and supplementation, allowing for control of SPION properties and increased yield and productivity.
A new tubular electrochemical system (TES) was developed to overcome scalability and sustainability challenges during synthesis of superparamagnetic iron oxide (Fe3O4) nanoparticles (SPIONs). The SPION yield and productivity were 8.3 mg mol(-1) Fe and 163 mu g mol(-1) Fe min(-1), respectively. The TES functions efficiently with electrolyte reuse and supplementation without any reduction in productivity. Gradual electrolyte supplementation (0.5 mL min(-1)) resulted in 75% higher yield than the non-supplemented system. TEM and XRD analyses confirmed the presence of Fe3O4. TES enables the use of a new reaction parameter-flow rate-for controlling SPION properties. Increasing electrolyte flow rate caused a decrease in SPION average size and size distribution. TES offers advantages of scalability and sustainability for large-scale production of Fe3O4 nanoparticles. [GRAPHICS] .
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