Sustainable and rapid preparation of nanosized Fe/Ni-pentlandite particles by mechanochemistry.

Chemical Science
David TetzlaffUlf-Peter Apfel

Abstract

In recent years, metal-rich sulfides of the pentlandite type (M9S8) have attracted considerable attention for energy storage applications. However, common synthetic routes towards pentlandites either involve energy intensive high temperature procedures or solvothermal methods with specialized precursors and non-sustainable organic solvents. Herein, we demonstrate that ball milling is a simple and efficient method to synthesize nanosized bimetallic pentlandite particles (Fe4.5Ni4.5S8, Pn) with an average size of ca. 250 nm in a single synthetic step from elemental- or sulfidic mixtures. We herein highlight the effects of the milling ball quantity, precursor types and milling time on the product quality. Along this line, Raman spectroscopy as well as temperature/pressure monitoring during the milling processes provide valuable insights into mechanistic differences between the mechanochemical Pn-formation. By employing the obtained Pn-nanosized particles as cathodic electrocatalysts for water splitting in a zero-gap PEM electrolyzer we provide a comprehensive path for a potential sustainable future process involving non-noble metal catalysts.

References

Feb 8, 2013·Chemical Society Reviews·Christine Friederike Burmeister, Arno Kwade
Jul 28, 2016·Nature Communications·Bharathi KonkenaUlf-Peter Apfel
Jan 13, 2017·The Journal of Organic Chemistry·José G Hernández, Carsten Bolm
Mar 7, 2019·Nanoscale·Mirian Elizabeth CascoLars Borchardt
Apr 4, 2019·Faraday Discussions·David TetzlaffUlf-Peter Apfel
May 2, 2019·Chemical Communications : Chem Comm·Mathias SmialkowskiUlf-Peter Apfel
May 6, 2020·Chemistry : a European Journal·Kevinjeorjios PellumbiUlf-Peter Apfel

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Citations

Apr 10, 2021·ChemSusChem·Karen J Ardila-Fierro, José G Hernández
Nov 4, 2021·ChemSusChem·Tilo RenschLars Borchardt

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Methods Mentioned

BETA
X-ray
differential scanning calorimetry

Software Mentioned

Malvern Panalytical
GUPIX
CPS instrument
MillControl
HighScore Plus (

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