Microwave-Enabled Size Control of Iron Oxide Nanoparticles on Reduced Graphene Oxide

Nanoparticle-functionalized 2D material networks are promising for a wide range of applications, but in situ formation of nanoparticles is commonly challenged by rapid growth. Here, we demonstrate controlled synthesis of small and dispersed iron oxide nanoparticles on reduced graphene oxide (rGO) networks through rapid localized heating with microwaves with low-cost iron nitrate as the precursor. The strong coupling of the microwave radiation with the rGO network rapidly heats the network locally to decompose the iron nitrate and generate iron oxide nanoparticles, while cessation of microwaves leads to rapid cooling to minimize crystal growth. Small changes in the microwave reaction time (<1 min) led to very large changes in the iron oxide morphology. The solid-state microwave syntheses produced narrower nanoparticle size distribution than conventional heating. These results illustrate the potential of solid-state microwave syntheses to control the nanoparticle size on 2D materials through rapid localized heating under the microwave process conditions, which should be extendable to a variety of transition metal oxide-rGO systems.



Work Title Microwave-Enabled Size Control of Iron Oxide Nanoparticles on Reduced Graphene Oxide
Open Access
  1. Siyuan Li
  2. Xuhui Xia
  3. Bryan D. Vogt
License In Copyright (Rights Reserved)
Work Type Article
  1. Langmuir
Publication Date September 21, 2021
Publisher Identifier (DOI)
  1. https://doi.org/10.1021/acs.langmuir.1c01990
Deposited November 15, 2021




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Work History

Version 1

  • Created
  • Added MicrowaveFe3O4rGO_revised_unmarked.pdf
  • Added Creator Siyuan Li
  • Added Creator Xuhui Xia
  • Added Creator Bryan D. Vogt
  • Published
  • Updated
  • Updated