دورية أكاديمية
ATOMIC HYDROGEN-DRIVEN SIZE CONTROL OF CATALYTIC NANOPARTICLES FOR SINGLE-WALLED CARBON NANOTUBE GROWTH
| العنوان: | ATOMIC HYDROGEN-DRIVEN SIZE CONTROL OF CATALYTIC NANOPARTICLES FOR SINGLE-WALLED CARBON NANOTUBE GROWTH |
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| المؤلفون: | Jeong, Hee J., Eude, Laurent, Gowtham, M., Marquardt, Bernd, Lim, Sung H., Enouz, Shaima M., Cojocaru, Costel Sorin, Park, K.A., Lee, Young Hee, Pribat, Didier |
| المساهمون: | Laboratoire de physique des interfaces et des couches minces Palaiseau (LPICM), École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), NanoMaDe, École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Department of Energy Science, Sungkyunkwan University Suwon (SKKU) |
| المصدر: | ISSN: 1793-2920. |
| بيانات النشر: | HAL CCSD World Scientific Publishing |
| سنة النشر: | 2008 |
| المجموعة: | École Polytechnique, Université Paris-Saclay: HAL |
| مصطلحات موضوعية: | Single-walled carbon nanotube, atomic hydrogen, catalytic nanoparticle, chemical vapor deposition, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci] |
| الوصف: | International audience ; The effects of an atomic hydrogen (Hat ) pretreatment of the catalyst layer on the low tem- perature growth of single-walled carbon nanotubes (SWCNTs) have been investigated using a modified catalytic chemical vapor deposition system. Well-defined and isolated individual Fe nanoparticles as a catalyst are successfully formed on the defects with high trapping energy which are created on the Al2O3 surface by Hat pretreatment, yielding highly dense SWCNTs. The pretreatment mechanism of Hat , compared to H2 , is also discussed. It was also found that the quality of SWCNTs can be enhanced when Hat is flowed with CH4 during nanotubes growth at low temperature. In this case, the undesired carbon products and defects on catalyst seeds and nanotube walls can be selectively removed by Hat . Therefore it is essential to use Hat in the pretreatment stage for increasing catalytic activity and to keep the size of nanoparticles in the nm range. Hat can also be employed in growth stage for enhancing SWCNTs quality and density at low temperature. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| العلاقة: | hal-00795000; https://hal.science/hal-00795000Test; https://hal.science/hal-00795000/documentTest; https://hal.science/hal-00795000/file/2008-Nano-ATOMIC_HYDROGEN-DRIVEN_SIZE.pdfTest |
| DOI: | 10.1142/S1793292008000939 |
| الإتاحة: | https://doi.org/10.1142/S1793292008000939Test https://hal.science/hal-00795000Test https://hal.science/hal-00795000/documentTest https://hal.science/hal-00795000/file/2008-Nano-ATOMIC_HYDROGEN-DRIVEN_SIZE.pdfTest |
| حقوق: | info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.B46B149C |
| قاعدة البيانات: | BASE |
| DOI: | 10.1142/S1793292008000939 |
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