Electron microscopy study of the carbon-induced 2H-3R-1T phase transition of MoS2
Por:
Macchione, Micaela A., Mendoza-Cruz, Ruben, Bazan-Diaz, Lourdes, Velázquez-Salazar J.J., Santiago, Ulises, Arellano-Jiménez M.J., Perez J.F., Jose-Yacaman, Miguel, Samaniego-Benitez J.E.
Publicada:
1 ene 2020
Resumen:
Phase transition of molybdenum disulfide (MoS2) was carried out in a pure monocrystal using a combination milling and heating process. Decanoic acid was used as a carbon source to promote the exfoliation of the layers of the material. By Raman spectroscopy, the monocrystal was analyzed showing only the 2H phase. In addition, the atomic structure of the phase was confirmed by atomic resolution microscopy (ARM). The phase transformation was confirmed by X-ray photoelectron spectroscopy (XPS) showing the characteristic displacement in the Mo3d region due to the 1T phase while the S2p region shows a possible interaction between the sulfur and carbon. The ARM images show the characteristics structures of the 1T and 3R phases of MoS2,. © 2020 The Royal Society of Chemistry and the Centre National de la Recherche Scientifique.
Filiaciones:
Universidad Nacional de Córdoba, Facultad de Ciencias Químicas, Córdoba, Argentina
CONICET-Instituto de Investigaciones en Fisicoquímica de Córdoba (INFIQC), Córdoba, Argentina
Universidad Nacional de Villa María, Instituto Académico Pedagógico de Ciencias Humanas, Argentina
Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Mexico City, Mexico
University of Texas at San AntonioTX, United States
University of Texas at DallasTX, United States
Centro de Investigación y de Estudios Avanzados del IPN, Querétaro, Mexico
Northern Arizona UniversityAZ, United States
Cátedras CONACYT-Instituto Politécnico Nacional-CICATA-Legaria, México City, Mexico
Univ Nacl Cordoba, Fac Ciencias Quim, Cordoba, Argentina
Consejo Nacl Invest Cient & Tecn, Inst Invest Fisicoquim Cordoba INFIQC, Cordoba, Argentina
Univ Nacl Villa Maria, Inst Acad Pedag Ciencias Hummas, Cordoba, Argentina
Univ Nacl Autonoma Mexico, Inst Invest Mat, Mexico City, DF, Mexico
Univ Texas San Antonio, San Antonio, TX USA
Univ Texas Dallas, Richardson, TX 75083 USA
IPN, Ctr Invest & Estudios Avanzados, Queretaro, Mexico
No Arizona Univ, Flagstaff, AZ 86011 USA
Inst Politecn Nacl, CICATA Legaria, Catedras CONACYT, Mexico City, DF, Mexico
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