Tailoring the nanostructure of plasma-deposited CoOX-based thin films for catalytic applications – A step forward in designing nanocatalysts
Among the heterogeneous catalysts based on non-noble metals, cobalt oxides, mainly in the Co3O4 form, are particularly promising materials. Herein, we developed a facile bottom-up approach to synthesize a novel and sophisticated Co3O4-based thin-film material with a tailored nanostructure that is cr...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-10-01
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| Series: | Materials & Design |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127522007171 |
| _version_ | 1828384697027133440 |
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| author | Jacek Tyczkowski Ryszard Kapica Marcin Kozanecki Hanna Kierzkowska-Pawlak Jan Sielski Toru Aoki Hidenori Mimura |
| author_facet | Jacek Tyczkowski Ryszard Kapica Marcin Kozanecki Hanna Kierzkowska-Pawlak Jan Sielski Toru Aoki Hidenori Mimura |
| author_sort | Jacek Tyczkowski |
| collection | DOAJ |
| description | Among the heterogeneous catalysts based on non-noble metals, cobalt oxides, mainly in the Co3O4 form, are particularly promising materials. Herein, we developed a facile bottom-up approach to synthesize a novel and sophisticated Co3O4-based thin-film material with a tailored nanostructure that is crucial for catalytic properties. The films were produced using a low-pressure plasma-enhanced chemical vapor deposition (PECVD) process that was thoroughly analyzed. The as-deposited films, in the amorphous form composed of Co, O, C, and H atoms (called CoOX-based films), were thermally treated (calcined), transforming them into films containing Co3O4 nanocrystallites. For a fundamental understanding of the transformation process, the calcination was performed in a controlled manner by Raman spectroscopy using the Raman laser as a heat source. An original model to describe the formation of Co3O4 nanocrystallites was proposed. We have shown that the concentration of Co3O4 and also the number and size of its nanocrystallites in the films can be rationally tailored to the specific needs by selecting the parameters of the PECVD and calcination processes. Our research provides a practical strategy for the molecular design of nanostructured thin-film catalysts in a controllable way using the PECVD process. |
| first_indexed | 2024-12-10T05:07:41Z |
| format | Article |
| id | doaj.art-b33e3ca4b7c24044bceb566b128dd2c7 |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-12-10T05:07:41Z |
| publishDate | 2022-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-b33e3ca4b7c24044bceb566b128dd2c72022-12-22T02:01:12ZengElsevierMaterials & Design0264-12752022-10-01222111095Tailoring the nanostructure of plasma-deposited CoOX-based thin films for catalytic applications – A step forward in designing nanocatalystsJacek Tyczkowski0Ryszard Kapica1Marcin Kozanecki2Hanna Kierzkowska-Pawlak3Jan Sielski4Toru Aoki5Hidenori Mimura6Department of Molecular Engineering, Faculty of Process and Environmental Engineering, Lodz University of Technology, Wólczańska 213, 93-005 Lodz, Poland; Corresponding author.Department of Molecular Engineering, Faculty of Process and Environmental Engineering, Lodz University of Technology, Wólczańska 213, 93-005 Lodz, PolandDepartment of Molecular Physics, Faculty of Chemistry, Lodz University of Technology, Żeromskiego 116, 90-543 Lodz, PolandDepartment of Molecular Engineering, Faculty of Process and Environmental Engineering, Lodz University of Technology, Wólczańska 213, 93-005 Lodz, PolandDepartment of Molecular Engineering, Faculty of Process and Environmental Engineering, Lodz University of Technology, Wólczańska 213, 93-005 Lodz, PolandResearch Institute of Electronics, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu 432-8011 JapanResearch Institute of Electronics, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu 432-8011 JapanAmong the heterogeneous catalysts based on non-noble metals, cobalt oxides, mainly in the Co3O4 form, are particularly promising materials. Herein, we developed a facile bottom-up approach to synthesize a novel and sophisticated Co3O4-based thin-film material with a tailored nanostructure that is crucial for catalytic properties. The films were produced using a low-pressure plasma-enhanced chemical vapor deposition (PECVD) process that was thoroughly analyzed. The as-deposited films, in the amorphous form composed of Co, O, C, and H atoms (called CoOX-based films), were thermally treated (calcined), transforming them into films containing Co3O4 nanocrystallites. For a fundamental understanding of the transformation process, the calcination was performed in a controlled manner by Raman spectroscopy using the Raman laser as a heat source. An original model to describe the formation of Co3O4 nanocrystallites was proposed. We have shown that the concentration of Co3O4 and also the number and size of its nanocrystallites in the films can be rationally tailored to the specific needs by selecting the parameters of the PECVD and calcination processes. Our research provides a practical strategy for the molecular design of nanostructured thin-film catalysts in a controllable way using the PECVD process.http://www.sciencedirect.com/science/article/pii/S0264127522007171Cold plasma depositionPECVDCobalt oxidesNanostructure engineeringRaman spectroscopyNanocatalysts |
| spellingShingle | Jacek Tyczkowski Ryszard Kapica Marcin Kozanecki Hanna Kierzkowska-Pawlak Jan Sielski Toru Aoki Hidenori Mimura Tailoring the nanostructure of plasma-deposited CoOX-based thin films for catalytic applications – A step forward in designing nanocatalysts Materials & Design Cold plasma deposition PECVD Cobalt oxides Nanostructure engineering Raman spectroscopy Nanocatalysts |
| title | Tailoring the nanostructure of plasma-deposited CoOX-based thin films for catalytic applications – A step forward in designing nanocatalysts |
| title_full | Tailoring the nanostructure of plasma-deposited CoOX-based thin films for catalytic applications – A step forward in designing nanocatalysts |
| title_fullStr | Tailoring the nanostructure of plasma-deposited CoOX-based thin films for catalytic applications – A step forward in designing nanocatalysts |
| title_full_unstemmed | Tailoring the nanostructure of plasma-deposited CoOX-based thin films for catalytic applications – A step forward in designing nanocatalysts |
| title_short | Tailoring the nanostructure of plasma-deposited CoOX-based thin films for catalytic applications – A step forward in designing nanocatalysts |
| title_sort | tailoring the nanostructure of plasma deposited coox based thin films for catalytic applications a step forward in designing nanocatalysts |
| topic | Cold plasma deposition PECVD Cobalt oxides Nanostructure engineering Raman spectroscopy Nanocatalysts |
| url | http://www.sciencedirect.com/science/article/pii/S0264127522007171 |
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