Enhanced NH 3 Sensing Performance of Mo Cluster-MoS 2 Nanocomposite Thin Films via the Sulfurization of Mo 6 Cluster Iodides Precursor.

Autor: Zhang M; Graduate School of Chemical Sciences and Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo 060-8628, Japan.; Research Center for Functional Materials, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba 305-0047, Japan.; CNRS-Saint-Gobain-NIMS, IRL3629, Laboratory for Innovative Key Materials and Structures (LINK), National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan., Grasset F; CNRS-Saint-Gobain-NIMS, IRL3629, Laboratory for Innovative Key Materials and Structures (LINK), National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan.; Univ Rennes, CNRS, Institut des Sciences Chimiques de Rennes (ISCR)-UMR 6226, F-35000 Rennes, France., Masubuchi Y; Graduate School of Chemical Sciences and Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo 060-8628, Japan.; Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo 060-8628, Japan., Shimada T; Graduate School of Chemical Sciences and Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo 060-8628, Japan.; Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo 060-8628, Japan., Nguyen TKN; CNRS-Saint-Gobain-NIMS, IRL3629, Laboratory for Innovative Key Materials and Structures (LINK), National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan.; International Center for Young Scientists, ICYS-SENGEN, Global Networking Division, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba 305-0047, Japan., Dumait N; Univ Rennes, CNRS, Institut des Sciences Chimiques de Rennes (ISCR)-UMR 6226, F-35000 Rennes, France., Renaud A; Univ Rennes, CNRS, Institut des Sciences Chimiques de Rennes (ISCR)-UMR 6226, F-35000 Rennes, France., Cordier S; Univ Rennes, CNRS, Institut des Sciences Chimiques de Rennes (ISCR)-UMR 6226, F-35000 Rennes, France., Berthebaud D; CNRS-Saint-Gobain-NIMS, IRL3629, Laboratory for Innovative Key Materials and Structures (LINK), National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan., Halet JF; CNRS-Saint-Gobain-NIMS, IRL3629, Laboratory for Innovative Key Materials and Structures (LINK), National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan., Uchikoshi T; Graduate School of Chemical Sciences and Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo 060-8628, Japan.; Research Center for Functional Materials, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba 305-0047, Japan.; CNRS-Saint-Gobain-NIMS, IRL3629, Laboratory for Innovative Key Materials and Structures (LINK), National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan.
Jazyk: angličtina
Zdroj: Nanomaterials (Basel, Switzerland) [Nanomaterials (Basel)] 2023 Jan 24; Vol. 13 (3). Date of Electronic Publication: 2023 Jan 24.
DOI: 10.3390/nano13030478
Abstrakt: The high-performance defect-rich MoS 2 dominated by sulfur vacancies as well as Mo-rich environments have been extensively studied in many fields, such as nitrogen reduction reactions, hydrogen evolution reactions, as well as sensing devices for NH 3 , which are attributed to the under-coordinated Mo atoms playing a significant role as catalytic sites in the defect area. In this study, the Mo cluster-MoS 2 composite was creatively synthesized through a one-step sulfurization process via H 2 /H 2 S gas flow. The Mo 6 cluster iodides (MIs) coated on the fluorine-doped tin oxide (FTO) glass substrate via the electrophoretic deposition method (i.e., MI@FTO) were used as a precursor to form a thin-film nanocomposite. Investigations into the structure, reaction mechanism, and NH 3 gas sensing performance were carried out in detail. The results indicated that during the gas flowing, the decomposed Mo 6 cluster iodides played the role of template and precursor, forming complicated Mo cluster compounds and eventually producing MoS 2 . These Mo cluster-MoS 2 thin-film nanocomposites were fabricated and applied as gas sensors for the first time. It turns out that after the sulfurization process, the response of MI@FTO for NH 3 gas increased three times while showing conversion from p-type to n-type semiconductor, which enhances their possibilities for future device applications.
Competing Interests: The authors declare no conflict of interest.
Databáze: MEDLINE
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