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Cyriac J, Pradeep T, Kang H, Souda R, Cooks RG. Low-Energy Ionic Collisions at Molecular Solids. Chem Rev 2012; 112:5356-411. [DOI: 10.1021/cr200384k] [Citation(s) in RCA: 88] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Jobin Cyriac
- DST Unit of
Nanoscience, Department
of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, India
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United
States
| | - T. Pradeep
- DST Unit of
Nanoscience, Department
of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, India
| | - H. Kang
- Department of Chemistry, Seoul National University, Gwanak-gu, Seoul 151-747,
Republic of Korea
| | - R. Souda
- International
Center for Materials
Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - R. G. Cooks
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United
States
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Joshi R, Waldschmidt B, Engstler J, Schäfer R, Schneider JJ. Generation and agglomeration behaviour of size-selected sub-nm iron clusters as catalysts for the growth of carbon nanotubes. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2011; 2:734-739. [PMID: 22259755 PMCID: PMC3257497 DOI: 10.3762/bjnano.2.80] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2011] [Accepted: 10/08/2011] [Indexed: 05/31/2023]
Abstract
Mass-selected, ligand-free Fe(N) clusters with N = 10-30 atoms (cluster diameter: 0.6-0.9 nm) were implanted into [Al@SiO(x)] surfaces at a low surface coverage corresponding to a few thousandths up to a few hundredths of a monolayer in order to avoid initial cluster agglomeration. These studies are aimed towards gaining an insight into the lower limit of the size regime of carbon nanotube (CNT) growth by employing size-selected sub-nm iron clusters as catalyst or precatalyst precursors for CNT growth. Agglomeration of sub-nm iron clusters to iron nanoparticles with a median size range between three and six nanometres and the CNT formation hence can be observed at CVD growth temperatures of 750 °C. Below 600 °C, no CNT growth is observed.
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Affiliation(s)
- Ravi Joshi
- Department of Chemistry, Eduard-Zintl-Institute, Inorganic Chemistry, Technische Universität Darmstadt, Petersenstr. 18, 64287 Darmstadt, Germany, Fax: +49-6151-16-3470, Tel: +49-6151-16-3225
| | - Benjamin Waldschmidt
- Department of Chemistry, Eduard-Zintl-Institute, Physical Chemistry, Technische Universität Darmstadt, Petersenstr. 20, 64287 Darmstadt, Germany, Fax: +49-6151-16-6024, Tel: +49-6151-16-2498
| | - Jörg Engstler
- Department of Chemistry, Eduard-Zintl-Institute, Inorganic Chemistry, Technische Universität Darmstadt, Petersenstr. 18, 64287 Darmstadt, Germany, Fax: +49-6151-16-3470, Tel: +49-6151-16-3225
| | - Rolf Schäfer
- Department of Chemistry, Eduard-Zintl-Institute, Physical Chemistry, Technische Universität Darmstadt, Petersenstr. 20, 64287 Darmstadt, Germany, Fax: +49-6151-16-6024, Tel: +49-6151-16-2498
| | - Jörg J Schneider
- Department of Chemistry, Eduard-Zintl-Institute, Inorganic Chemistry, Technische Universität Darmstadt, Petersenstr. 18, 64287 Darmstadt, Germany, Fax: +49-6151-16-3470, Tel: +49-6151-16-3225
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