Polypyrrole‐decorated, milled carbon fibers‐inserted chitin nanofibers/multiwalled carbon nanotubes flexible free‐standing film for supercapacitors

2019 ◽  
Vol 40 (11) ◽  
pp. 4311-4320 ◽  
Author(s):  
Ping Jiang ◽  
Chuchu Chen ◽  
Dagang Li
Keyword(s):  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Carbon Fibers ◽  
Free Standing ◽  
Multiwalled Carbon ◽  
Chitin Nanofibers

scholarly journals CVD Synthesis of Hierarchical 3D MWCNT/Carbon-Fiber Nanostructures

2008 ◽  
Vol 2008 ◽  
pp. 1-7 ◽  
Author(s):  
Toma Susi ◽  
Albert G. Nasibulin ◽  
Hua Jiang ◽  
Esko I. Kauppinen
Keyword(s):  
Electron Microscopy ◽  
Carbon Nanotubes ◽  
Carbon Fiber ◽  
Multiwalled Carbon Nanotubes ◽  
Carbon Fibers ◽  
Gas Flow ◽  
Carbon Precursor ◽  
Optimal Temperature ◽  
Multiwalled Carbon ◽  
Cvd Synthesis

Multiwalled carbon nanotubes (MWCNTs) were synthesized by CVD on industrially manufactured highly crystalline vapor-grown carbon fibers (VGCFs). Two catalyst metals (Ni and Fe) and carbon precursor gases (C2H2and CO) were studied. The catalysts were deposited on the fibers by sputtering and experiments carried out in two different reactors. Samples were characterized by electron microscopy (SEM and TEM). Iron was completely inactive as catalyst with bothC2H2and CO for reasons discussed in the paper. The combination of Ni andC2H2was very active for secondary CNT synthesis, without any pretreatment of the fibers. The optimal temperature for CNT synthesis was750∘C, with total gas flow of 650 cm3min⁡−1ofC2H2,H2, and Ar in 1.0:6.7:30 ratio.

Multiwalled Carbon Nanotubes Reinforced Portland Cement Composites for Smoke Detection

2012 ◽  
Vol 185 ◽  
pp. 21-24 ◽  
Author(s):  
Prashant Shukla ◽  
Vasuda Bhatia ◽  
Vikesh Gaur ◽  
Rupesh Kumar Basniwal ◽  
Budhendra Kumar Singh ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Ionic Conductivity ◽  
Portland Cement ◽  
Multiwalled Carbon Nanotubes ◽  
Carbon Fibers ◽  
Room Temperature ◽  
Porous Matrix ◽  
Cement Composites ◽  
Smoke Detection ◽  
Multiwalled Carbon

Smoke detection with multiwalled carbon nanotubes (MWCNTs)/cement composites have been studied. Pellets of MWCNTs reinforced Portland cement have been casted with varying MWCNTs %. The DC transient studies depicted an increase in conductivity when exposed to smoke. Responsivity in the range 26-46% has been obtained under smoky environment based on MWCNTs % in the composites. Ionic conductivity increased with frequency at room temperature under ambient and smoky environments. In this paper, we also report fabrication technique of the pellets and the sensing mechanism is explained on the basis of ionic conductivity of the cementitious material in combination with the conductive carbon fibers present in the porous matrix of the cement.

Free-standing flexible multiwalled carbon nanotubes paper for wearable thermoelectric power generator

2020 ◽  
Vol 449 ◽  
pp. 227493 ◽  
Author(s):  
Meetu Bharti ◽  
Ajay Singh ◽  
Bhanu Pratap Singh ◽  
Sanjay R. Dhakate ◽  
Gajender Saini ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Thermoelectric Power ◽  
Multiwalled Carbon Nanotubes ◽  
Free Standing ◽  
Multiwalled Carbon ◽  
Power Generator ◽  
Thermoelectric Power Generator

Effect of Multiwalled Carbon Nanotubes On Mechanical Properties of Concrete

2012 ◽  
Vol 2 (6) ◽  
pp. 166-168 ◽  
Author(s):  
Dr.T.Ch.Madhavi Dr.T.Ch.Madhavi ◽  
◽  
Pavithra.P Pavithra.P ◽  
Sushmita Baban Singh Sushmita Baban Singh ◽  
S.B.Vamsi Raj S.B.Vamsi Raj ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Multiwalled Carbon

Sorption of Bisphenol A in Aqueous Solutions on Irradiated and as-Grown Multiwalled Carbon Nanotubes

2018 ◽  
Vol 69 (5) ◽  
pp. 1233-1239
Author(s):  
Raluca Madalina Senin ◽  
Ion Ion ◽  
Ovidiu Oprea ◽  
Rusandica Stoica ◽  
Rodica Ganea ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Bisphenol A ◽  
Aqueous Solutions ◽  
Adsorption Capacity ◽  
Multiwalled Carbon Nanotubes ◽  
Adsorption Process ◽  
Sorption Process ◽  
Multiwalled Carbon ◽  
Before And After ◽  
Kinetic Sorption

In this study, non-irradiated and weathered multiwalled carbon nanotubes (MWCNTs) obtained through irradiation, were studied as adsorbents for BPA, both nanomaterials being characterized before and after the adsorption process. The objectives of our investigation were to compare the characteristics of non-irradiated and irradiated MWCNTs, to evaluate the adsorption capacity of BPA by pristine and irradiated MWCNTs and to determine the variation of the kinetic, sorption and thermodynamic parameters during sorption process using both sorbents.

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