SERS spectroscopy studies on the electrochemical oxidation of single-walled carbon nanotubes in sulfuric acid solutions

2004 ◽  
Vol 144 (2) ◽  
pp. 133-142 ◽  
Author(s):  
S Lefrant ◽  
M Baibarac ◽  
I Baltog ◽  
J.Y Mevellec ◽  
L Mihut ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Sulfuric Acid ◽  
Electrochemical Oxidation ◽  
Single Walled Carbon Nanotubes ◽  
Acid Solutions ◽  
Single Walled Carbon ◽  
Spectroscopy Studies ◽  
Sulfuric Acid Solutions ◽  
Walled Carbon Nanotubes

scholarly journals Effect of Electrochemical Oxidation on Physicochemical Properties of Fe‐Containing Single‐Walled Carbon Nanotubes

2020 ◽  
Vol 7 (19) ◽  
pp. 4136-4143
Author(s):  
Elli Leppänen ◽  
Sami Sainio ◽  
Hua Jiang ◽  
Bjørn Mikladal ◽  
Ilkka Varjos ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Physicochemical Properties ◽  
Electrochemical Oxidation ◽  
Single Walled Carbon Nanotubes ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

A novel electrochemical chiral sensor for 3,4-dihydroxyphenylalanine based on the combination of single-walled carbon nanotubes, sulfuric acid and square wave voltammetry

The Analyst ◽  
2014 ◽  
Vol 139 (9) ◽  
pp. 2243-2248 ◽  
Author(s):  
Lisha Chen ◽  
Fengxia Chang ◽  
Lingchen Meng ◽  
Meixian Li ◽  
Zhiwei Zhu
Keyword(s):  
Carbon Nanotubes ◽  
Sulfuric Acid ◽  
Chiral Recognition ◽  
Square Wave Voltammetry ◽  
Single Walled Carbon Nanotubes ◽  
Chiral Discrimination ◽  
Square Wave ◽  
Single Walled Carbon ◽  
Wave Voltammetry ◽  
Walled Carbon Nanotubes

The combination of SWV with chiral SWCNTs and H2SO4 shows chiral discrimination for 3,4-dihydroxyphenylalanine, and the three are indispensable for this chiral recognition.

The Heterogeneity of Multiwalled and Single-Walled Carbon Nanotubes: Iron Oxide Impurities Can Catalyze the Electrochemical Oxidation of Glucose

2009 ◽  
Vol 21 (1) ◽  
pp. 48-51 ◽  
Author(s):  
Laurent Siegert ◽  
Dimitrios K. Kampouris ◽  
Jaanus Kruusma ◽  
Väino Sammelselg ◽  
Craig E. Banks
Keyword(s):  
Carbon Nanotubes ◽  
Iron Oxide ◽  
Electrochemical Oxidation ◽  
Single Walled Carbon Nanotubes ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes ◽  
Oxidation Of Glucose

SERS studies on single-walled carbon nanotubes submitted to chemical transformation with sulfuric acid

Carbon ◽  
2002 ◽  
Vol 40 (12) ◽  
pp. 2201-2211 ◽  
Author(s):  
S. Lefrant ◽  
I. Baltog ◽  
M. Baibarac ◽  
J.Y. Mevellec ◽  
O. Chauvet
Keyword(s):  
Carbon Nanotubes ◽  
Sulfuric Acid ◽  
Chemical Transformation ◽  
Single Walled Carbon Nanotubes ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

Purification and Characterization of Single-Walled Carbon Nanotubes

1999 ◽  
Vol 593 ◽  
Author(s):  
H.Y. Kim ◽  
W.B. Choi ◽  
N.S. Lee ◽  
D.S. Chung ◽  
J.H. Kang ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Carbon Nanotubes ◽  
Sulfuric Acid ◽  
Volume Ratio ◽  
Single Walled Carbon Nanotubes ◽  
Tem Analysis ◽  
Single Walled Carbon ◽  
Transmission Electron ◽  
Walled Carbon Nanotubes

ABSTRACTSingle-walled carbon nanotubes (SWNTs) were purified and cut into short length by the liquid phase oxidation using the typical oxidants such as HNO3, H2SO4 and their mixture. The SWNTacid solutions were refluxed at high temperature, filtered on poly tetra-fluoro ethylene (PTFE) filter paper. rinsed with distilled water, and then dried at room temperature. In order to find optimum purifying condition, acid solutions were made by mixing nitric / sulfuric acid by the different volume ratio. The reaction time was also varied from 1h to 6h. Through this method, purified SWNTs with the length of less than 2μm were successfully obtained, which was confirmed by scanning electron microscopy (SEM). From transmission electron microscopy (TEM) analysis, it was verified that SWNTs were purified with little damage on surface and metal catalysts were efficiently removed when sulfuric acid was mixed, which was also confirmed by energy disperse spectrum analysis (EDS). Moreover, size distribution of the purified SWNTs was characterized with Field Flow-Fractionation (FFF) method.

scholarly journals Purification and Functionalization of Single-Walled Carbon Nanotubes through Different Treatment Procedures

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Peir-An Tsai ◽  
Hsuan-Yuan Kuo ◽  
Wei-Ming Chiu ◽  
Jyh-Horng Wu
Keyword(s):  
Carbon Nanotubes ◽  
Sulfuric Acid ◽  
Single Walled Carbon Nanotubes ◽  
Acid Mixture ◽  
Acid Digestion ◽  
Single Walled Carbon ◽  
Microwave Assisted ◽  
Combined Use ◽  
Treatment Procedures ◽  
Walled Carbon Nanotubes

Single-walled carbon nanotubes (SWCNTs) were purified by the combined use of ultrasonic- and microwave-assisted acid digestion. The results show that the method efficiently eliminates impurities, reduces solvent consumption, and prevents damage to the structure of the SWCNTs. The purified SWCNTs were given functionalization treatments with a nitric acid/sulfuric acid mixture. These acid-treated SWCNTs (A-SWCNTs) were then grafted with 3-isocyanatopropyl triethoxysilane (A-SWCNTs-Si). The A-SWCNTs and A-SWCNTs-Si were used to improve interfacial interactions with polymers and to produce a well-dispersed SWCNT composite.

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