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Doping of inorganic materials in microreactors – preparation of Zn doped Fe₃O₄ nanoparticles

Simmons, M. D.; Jones, Naomi; Evans, D. J.; Wiles, Charlotte; Watts, P.; Salamon, Soma; Escobar Castillo, Marianela; Wende, Heiko; Lupascu, D. C.; Francesconi, M. Grazia


M. D. Simmons

Naomi Jones

D. J. Evans

Charlotte Wiles

P. Watts

Soma Salamon

Marianela Escobar Castillo

Heiko Wende

D. C. Lupascu


Microreactor systems are now used more and more for the continuous production of metal nanoparticles and metal oxide nanoparticles owing to the controllability of the particle size, an important property in many applications. Here, for the first time, we used microreactors to prepare metal oxide nanoparticles with controlled and varying metal stoichiometry. We prepared and characterised Zn-substituted Fe₃O₄ nanoparticles with linear increase of Zn content (ZnxFe₃−xO₄ with 0 ≤ x ≤ 0.48), which causes linear increases in properties such as the saturation magnetization, relative to pure Fe₃O₄. The methodology is simple and low cost and has great potential to be adapted to the targeted doping of a vast array of other inorganic materials, allowing greater control on the chemical stoichiometry for nanoparticles prepared in microreactors.


Simmons, M. D., Jones, N., Evans, D. J., Wiles, C., Watts, P., Salamon, S., …Francesconi, M. G. (2015). Doping of inorganic materials in microreactors – preparation of Zn doped Fe₃O₄ nanoparticles. Lab on a chip, 15(15), 3154-3162.

Journal Article Type Article
Acceptance Date Jun 5, 2015
Online Publication Date Jun 5, 2015
Publication Date Jun 5, 2015
Deposit Date Jul 24, 2015
Publicly Available Date Jul 24, 2015
Journal Lab on a chip
Print ISSN 1473-0197
Electronic ISSN 1473-0189
Publisher Royal Society of Chemistry
Peer Reviewed Peer Reviewed
Volume 15
Issue 15
Pages 3154-3162
Keywords Microreactor systems , Metal oxide nanoparticles
Public URL
Publisher URL!divAbstract
Additional Information Copy of article first published in: Lab on a chip, 2015, v.15, issue 15.


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