Platinum functionalized multiwall carbon nanotube composites as recyclable catalyst for highly efficient asymmetric hydrogenation of methyl pyruvate

RSC Advances ◽  
2015 ◽  
Vol 5 (124) ◽  
pp. 102481-102487 ◽  
Author(s):  
Poonam Sharma ◽  
Rakesh K. Sharma
Keyword(s):  
Asymmetric Hydrogenation ◽  
Multiwall Carbon Nanotube ◽  
Platinum Nanoparticle ◽  
Highly Efficient ◽  
Nanotube Composites ◽  
Carbon Nanotube Composites ◽  
Methyl Pyruvate ◽  
Recyclable Heterogeneous Catalyst ◽  
Carbon Nanocomposite ◽  
Multiwall Carbon

A highly efficient platinum nanoparticle functionalized carbon nanocomposite is demonstrated to be a recyclable heterogeneous catalyst for asymmetric hydrogenation of methyl pyruvate.

Calorimetric study on mechanically milled aluminum and multiwall carbon nanotube composites

2011 ◽  
Vol 62 (11) ◽  
pp. 1087-1093 ◽  
Author(s):  
Niraj Nayan ◽  
S.V.S.N. Murty ◽  
S.C. Sharma ◽  
K. Sree Kumar ◽  
P.P. Sinha
Keyword(s):  
Carbon Nanotube ◽  
Calorimetric Study ◽  
Multiwall Carbon Nanotube ◽  
Nanotube Composites ◽  
Carbon Nanotube Composites ◽  
Multiwall Carbon

Microwave absorption properties of magnetite multi-granule nanocluster–multiwall carbon nanotube composites

2019 ◽  
Vol 12 (02) ◽  
pp. 1950011
Author(s):  
Boo Hyun An ◽  
Bum Chul Park ◽  
Amarsingh Bhabu Kanagaraj ◽  
Prerna Chaturvedi ◽  
Hamad Al Yassi ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Tape Casting ◽  
Granule Size ◽  
Multiwall Carbon Nanotube ◽  
X Ray Diffraction ◽  
Transmission Electron ◽  
X Band ◽  
Nanotube Composites ◽  
Carbon Nanotube Composites ◽  
Multiwall Carbon

Fe3O4 multi-granule nanocluster–multiwall carbon nanotube composites for microwave absorbing applications are fabricated by the surface-engineered tape-casting method. The multi-granule nanoclusters are synthesized by a modified polyol hydrothermal method and characterized by transmission electron microscopy, X-ray diffraction and vibrating sample magnetometer. The complex permittivity and permeability of the composites with different granule size of nanoclusters are characterized in X-band range with the reflection method. The absorption peak of the composites are shifted from 11.1[Formula: see text]GHz to 11.51[Formula: see text]GHz as granule size increased from 18[Formula: see text]nm to 35[Formula: see text]nm.

Piezoresistance Characterization of Poly(Dimethyl-Siloxane)-Multiwall Carbon Nanotube Composites

2010 ◽  
Author(s):  
Reza Rizvi ◽  
Sara Makaremi ◽  
Steven Botelho ◽  
Elaine Biddiss ◽  
Hani Naguib
Keyword(s):  
Electrical Conductivity ◽  
Carbon Nanotube ◽  
Multiwall Carbon Nanotube ◽  
Dimethyl Siloxane ◽  
Conducting Filler ◽  
Nanotube Composites ◽  
Carbon Nanotube Composites ◽  
Electronic Textile ◽  
Multiwall Carbon

This study examines the piezoresistive behavior of polymer-conducting filler composites. Piezoresistive composites of Poly(dimethyl-siloxane)-Multiwall Carbon Nanotube (PDMS-MWNT) were prepared using a direct mixing approach. The dispersion and the electrical conductivity of the composites were characterized at various MWNT compositions. The piezoresistive behavior under compression was measured using an Instron Universal Tester/Digital Sourcemeter combination. Negative piezoresistive behavior was observed signifying a reducing mean inter-particulate distance in the composites. Moreover, the sensitivities increased at two compositional values of 3 and 5 wt% MWNT in PDMS, which was associated with the state of MWNT dispersion observed. Tensile piezoresistive behavior of the PDMS-MWNT adhered on a fabric substrate was also characterized. Positive piezoresistive values, indicating increasing inter-particulate distance, were observed. Significant challenges in the implementation of PDMS-MWNT as sensory materials in electronic-textile applications were observed as a result of this study and have been discussed.

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