Metal catalyst adsorption effects in the growth of carbon nanostructures on mesoporous material
Mesoporous silica films were used as host for metal-based (Me = Fe, Co, Ni) nanoparticles via wet impregnation at pH = 5. A hydrogen ion beam was used to reduce the metallic oxide and hydroxides, previously detected by X-ray photoelectron spectroscopy, in metals. Chemical vapor deposition processes...
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2012
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paper:paper_15334880_v12_n8_p6439_ClaudiaMarchi2023-06-08T16:19:57Z Metal catalyst adsorption effects in the growth of carbon nanostructures on mesoporous material Marchi, María Claudia Carbon Nanostructures Mesoporous Films Metal Catalyst Adsorption effect Carbon nanocapsules Carbon Nanostructures Chemical vapor deposition process Cobalt Catalyst Graphene sheets Hydrogen ions Iron catalyst Mesoporous films Mesoporous silica film Metal catalyst Metallic oxides Size and shape Wet impregnation Acetylene Adsorption Carbon nanotubes Catalysts Chemical vapor deposition Cobalt Graphene Hydrogen Lighting Mesoporous materials Metal nanoparticles Metals Nanocapsules Photoelectrons Scanning electron microscopy Transmission electron microscopy X ray photoelectron spectroscopy Carbon films Mesoporous silica films were used as host for metal-based (Me = Fe, Co, Ni) nanoparticles via wet impregnation at pH = 5. A hydrogen ion beam was used to reduce the metallic oxide and hydroxides, previously detected by X-ray photoelectron spectroscopy, in metals. Chemical vapor deposition processes at three different conditions varying the acetylene-nitrogen proportion were performed on the mesoporous films decorated by different metal-based nanoparticles. The grown carbon nanostructures were characterized by high-resolution transmission electron microscopy and scanning electron microscopy. The ability to grow carbon nanostructures decreases in the following order: Fe > Co > Ni. When pure acetylene is used, iron allows to form graphene sheets around the metal catalyst like carbon nanocapsules, whereas cobalt allows to form structures that seem to be carbon nanotubes. Nitrogen leads to control the size and shape of carbon nanocapsules for iron catalyst and avoid the growth of such carbon nanotube-like structures for cobalt catalyst. Copyright © 2012 American Scientific Publishers. Fil:Claudia Marchi, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2012 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15334880_v12_n8_p6439_ClaudiaMarchi http://hdl.handle.net/20.500.12110/paper_15334880_v12_n8_p6439_ClaudiaMarchi |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Carbon Nanostructures Mesoporous Films Metal Catalyst Adsorption effect Carbon nanocapsules Carbon Nanostructures Chemical vapor deposition process Cobalt Catalyst Graphene sheets Hydrogen ions Iron catalyst Mesoporous films Mesoporous silica film Metal catalyst Metallic oxides Size and shape Wet impregnation Acetylene Adsorption Carbon nanotubes Catalysts Chemical vapor deposition Cobalt Graphene Hydrogen Lighting Mesoporous materials Metal nanoparticles Metals Nanocapsules Photoelectrons Scanning electron microscopy Transmission electron microscopy X ray photoelectron spectroscopy Carbon films |
| spellingShingle |
Carbon Nanostructures Mesoporous Films Metal Catalyst Adsorption effect Carbon nanocapsules Carbon Nanostructures Chemical vapor deposition process Cobalt Catalyst Graphene sheets Hydrogen ions Iron catalyst Mesoporous films Mesoporous silica film Metal catalyst Metallic oxides Size and shape Wet impregnation Acetylene Adsorption Carbon nanotubes Catalysts Chemical vapor deposition Cobalt Graphene Hydrogen Lighting Mesoporous materials Metal nanoparticles Metals Nanocapsules Photoelectrons Scanning electron microscopy Transmission electron microscopy X ray photoelectron spectroscopy Carbon films Marchi, María Claudia Metal catalyst adsorption effects in the growth of carbon nanostructures on mesoporous material |
| topic_facet |
Carbon Nanostructures Mesoporous Films Metal Catalyst Adsorption effect Carbon nanocapsules Carbon Nanostructures Chemical vapor deposition process Cobalt Catalyst Graphene sheets Hydrogen ions Iron catalyst Mesoporous films Mesoporous silica film Metal catalyst Metallic oxides Size and shape Wet impregnation Acetylene Adsorption Carbon nanotubes Catalysts Chemical vapor deposition Cobalt Graphene Hydrogen Lighting Mesoporous materials Metal nanoparticles Metals Nanocapsules Photoelectrons Scanning electron microscopy Transmission electron microscopy X ray photoelectron spectroscopy Carbon films |
| description |
Mesoporous silica films were used as host for metal-based (Me = Fe, Co, Ni) nanoparticles via wet impregnation at pH = 5. A hydrogen ion beam was used to reduce the metallic oxide and hydroxides, previously detected by X-ray photoelectron spectroscopy, in metals. Chemical vapor deposition processes at three different conditions varying the acetylene-nitrogen proportion were performed on the mesoporous films decorated by different metal-based nanoparticles. The grown carbon nanostructures were characterized by high-resolution transmission electron microscopy and scanning electron microscopy. The ability to grow carbon nanostructures decreases in the following order: Fe > Co > Ni. When pure acetylene is used, iron allows to form graphene sheets around the metal catalyst like carbon nanocapsules, whereas cobalt allows to form structures that seem to be carbon nanotubes. Nitrogen leads to control the size and shape of carbon nanocapsules for iron catalyst and avoid the growth of such carbon nanotube-like structures for cobalt catalyst. Copyright © 2012 American Scientific Publishers. |
| author |
Marchi, María Claudia |
| author_facet |
Marchi, María Claudia |
| author_sort |
Marchi, María Claudia |
| title |
Metal catalyst adsorption effects in the growth of carbon nanostructures on mesoporous material |
| title_short |
Metal catalyst adsorption effects in the growth of carbon nanostructures on mesoporous material |
| title_full |
Metal catalyst adsorption effects in the growth of carbon nanostructures on mesoporous material |
| title_fullStr |
Metal catalyst adsorption effects in the growth of carbon nanostructures on mesoporous material |
| title_full_unstemmed |
Metal catalyst adsorption effects in the growth of carbon nanostructures on mesoporous material |
| title_sort |
metal catalyst adsorption effects in the growth of carbon nanostructures on mesoporous material |
| publishDate |
2012 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15334880_v12_n8_p6439_ClaudiaMarchi http://hdl.handle.net/20.500.12110/paper_15334880_v12_n8_p6439_ClaudiaMarchi |
| work_keys_str_mv |
AT marchimariaclaudia metalcatalystadsorptioneffectsinthegrowthofcarbonnanostructuresonmesoporousmaterial |
| _version_ |
1768543389024780288 |