Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Codruta Zoican"'
Autor:
Ren, Fang, Kanaan, Stacy A., Khalkhal, Fatemeh, Loebick, Codruta Zoican, Haller, Gary L., Pfefferle, Lisa D.
Publikováno v:
In Carbon November 2013 63:61-70
Autor:
Codruta Zoican Loebick, Fatemeh Khalkhal, Gary L. Haller, Stacy A. Kanaan, Fang Ren, Lisa D. Pfefferle
Publikováno v:
Carbon. 63:61-70
Many applications in nanotechnology require short and unentangled single-walled carbon nanotubes (SWCNT). Liquid-phase oxidative cutting gives nonuniform short tubes and causes significant material loss. Mechanical cutting is good for shortening SWCN
Autor:
Lisa D. Pfefferle, Codruta Zoican Loebick, Pengyu Chen, Brian A. Powell, Pu Chun Ke, Ramakrishna Podila, Apparao M. Rao, Kiran Lingam
Publikováno v:
Carbon. 49:3803-3807
Due to their unusual electronic and vibrational properties, single walled carbon nanotubes (SWCNTs) with sub-nanometer diameters d ∼ 0.5–0.9 nm have recently gained interest in the carbon community. Using UV–Vis–NIR spectroscopy and ultra-cen
Publikováno v:
The Journal of Physical Chemistry C. 115:1014-1024
Cobalt metal is a good catalyst for CO disproportionation to single-walled carbon nanotubes (SWNT) when particle size is stabilized on the nanometer scale. With reaction temperatures in the range of 973−1123 K, stabilization of nanometer Co particl
Autor:
Apparao M. Rao, Lisa D. Pfefferle, Gary L. Haller, Fang Ren, Codruta Zoican Loebick, Jason Reppert, Ramakrishna Podila, Joel Chudow
Publikováno v:
Journal of the American Chemical Society. 132:11125-11131
Subnanometer single-walled carbon nanotubes (sub-nm SWNTs) were synthesized at different temperatures (600, 700, and 800 degrees C) using CoMn bimetallic catalysts supported on MCM-41 silica templates. The state of the catalyst was investigated using
Publikováno v:
The Journal of Physical Chemistry C. 114:11092-11097
Single-walled carbon nanotubes (SWNT) with encapsulated nanosized cobalt particles have been synthesized by a facile and scalable method. In this approach, SWNT were filled with a cobalt acetylacetonate solution in dichloromethane by ultrasonication.
Autor:
Lisa D. Pfefferle, Gary L. Haller, Sung-Chul Lee, Mark Schwab, Codruta Zoican Loebick, Salim Derrouiche, Yuan Chen
Publikováno v:
Journal of Catalysis. 271:358-369
We present a study on CoCr–MCM-41 catalysts with stable nm-sized particles. The focus is their promoting effect on the synthesis of Single-Wall Carbon Nanotubes (SWNT). Bimetallic CoCr–MCM-41 catalysts were synthesized by combined grafting and in
Publikováno v:
The Journal of Physical Chemistry C. 114:4336-4339
Different synthesis procedures including hydrothermal, solvothermal, and chemical reduction routes have been previously developed by our group for the production of bismuth nanotubes (BiNTs). It has been shown that a post synthesis treatment with sod
Publikováno v:
The Journal of Physical Chemistry C. 114:3431-3440
In this paper, we demonstrate a new route for synthesis of bismuth nanotubes (BiNTs) based on chemical reduction using sodium borohydride. A comparison and an optimization of different synthesis procedures including hydrothermal and solvothermal synt
Autor:
Darlington C. Abanulo, Gary L. Haller, Magda Majewska, Lisa D. Pfefferle, Codruta Zoican Loebick
Publikováno v:
Applied Catalysis A: General. 374:213-220
Synthesis of single wall carbon nanotubes (SWNT) on a CoCr-MCM-41 bimetallic catalyst by CO disproportionation has been carried out at five different temperatures between 500 and 900 °C. A series of methods have been employed for a comprehensive ass