Edge decoration of MoS 2 monolayer with ferromagnetic CoFe nanoparticles

Zhengong Meng, Cheuk Lam Ho, Guijun Li, Sheung Mei Ng, Hon Fai Wong, Chi Wah Leung, Wai Yeung Wong

Research output: Journal article publicationJournal articleAcademic researchpeer-review

1 Citation (Scopus)

Abstract

Molybdenum disulfide (MoS 2 ) monolayers decorated with ferromagnetic CoFe nanoparticles on the edges were synthesized through a one-step pyrolysis of precursor molecules in an argon atmosphere. The CoFe precursor was spin coated on the MoS 2 monolayer grown on Si/SiO 2 substrates. Highly-ordered, body-centered cubic (bcc) CoFe nanoparticles were revealed under optimized pyrolysis conditions, possessing coercivity up to 1000 Oe at room temperature. The CoFe nanoparticles were well-positioned along the edge sites of MoS 2 monolayers. The vibration modes of Mo and S atoms were confined after the decoration by CoFe nanoparticles, as characterized by Raman shift spectroscopy. The sizes of nanoparticles growing on the MoS 2 monolayers are more uniform than those from other preparation routines. Finally, the optimized pyrolysis temperature and conditions provide recipes for decorating related noble metal catalytic materials.

Original languageEnglish
Article number115010
JournalMaterials Research Express
Volume5
Issue number11
DOIs
Publication statusPublished - 1 Nov 2018

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Metals and Alloys

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