Preparation of a novel ionic hybrid stationary phase by non-covalent functionalization of single-walled carbon nanotubes with amino-derivatized silica gel for fast HPLC separation of aromatic compounds

Talanta ◽  
2016 ◽  
Vol 149 ◽  
pp. 21-29 ◽  
Author(s):  
Hayriye Aral ◽  
K. Serdar Çelik ◽  
Tarık Aral ◽  
Giray Topal
Keyword(s):  
Carbon Nanotubes ◽  
Stationary Phase ◽  
Silica Gel ◽  
Aromatic Compounds ◽  
Single Walled Carbon Nanotubes ◽  
Hplc Separation ◽  
Covalent Functionalization ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

Reinforcement of silica with single-walled carbon nanotubes through covalent functionalization

2006 ◽  
Vol 16 (47) ◽  
pp. 4592 ◽  
Author(s):  
Yuanjian Zhang ◽  
Yanfei Shen ◽  
Dongxue Han ◽  
Zhijuan Wang ◽  
Jixia Song ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Single Walled Carbon Nanotubes ◽  
Covalent Functionalization ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

Dispersing Single-Walled Carbon Nanotubes in Water by Adsorption of Polyphenols

2009 ◽  
Vol 620-622 ◽  
pp. 501-504
Author(s):  
Qiu Liao ◽  
Jing Sun ◽  
Lian Gao
Keyword(s):  
Carbon Nanotubes ◽  
Aromatic Compounds ◽  
Potential Application ◽  
Single Walled Carbon Nanotubes ◽  
Dispersion Interactions ◽  
Single Walled Carbon ◽  
Dispersion State ◽  
Ultrasonication Time ◽  
Walled Carbon Nanotubes

Single-walled carbon nanotubes (SWCNTs) were dispersed in water with the assistance of polyphenols (resorcinol and pyrogallol). SWCNTs have intrinsic tendency to adsorb aromatic compounds due to π-π dispersion interactions, which leads to SWCNTs noncovalently dispersed in water by adsorption of resorcinol or pyrogallol. The concentration of SWCNT suspension was determined by the absorbance value at 500 nm using UV-Vis spectrometer. The effects of polyphenol concentration and ultrasonication time on the dispersion state have been investigated. Resorcinol of 0.5 mg/mL was found to be most effective for solubilizing SWCNTs in water. Over 60 % of SWCNTs were well dispersed with ultrasonication time for 4 hours. However, SWCNTs were cut shorter and damages could be introduced with prolonged ultrasonication time. TEM images showed that SWCNT bundles became thinner with the presence of polyphenols. These aromatic compounds provide an effective way to disperse SWCNTs in water and might have potential application in nanocomposite preparation.

Covalent Functionalization of Single-Walled Carbon Nanotubes with Thermoresponsive Core Cross-Linked Polymeric Micelles

2012 ◽  
Vol 45 (11) ◽  
pp. 4698-4706 ◽  
Author(s):  
Yonggui Li ◽  
Duanguang Yang ◽  
Alex Adronov ◽  
Yong Gao ◽  
Xujun Luo ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Polymeric Micelles ◽  
Single Walled Carbon Nanotubes ◽  
Covalent Functionalization ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes
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