scholarly journals The effects of liquid-phase oxidation of multiwall carbon nanotubes on their surface characteristics

2016 ◽  
Vol 112 ◽  
pp. 012004 ◽  
Author(s):  
I N Burmistrov ◽  
D S Muratov ◽  
I A Ilinykh ◽  
E A Kolesnikov ◽  
A Yu Godymchuk ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Liquid Phase ◽  
Multiwall Carbon Nanotubes ◽  
Surface Characteristics ◽  
Liquid Phase Oxidation ◽  
Phase Oxidation ◽  
Multiwall Carbon

Aerobic Liquid-Phase Oxidation of Ethylbenzene to Acetophenone Catalyzed by Carbon Nanotubes

ChemCatChem ◽  
2013 ◽  
Vol 5 (6) ◽  
pp. 1578-1586 ◽  
Author(s):  
Jin Luo ◽  
Feng Peng ◽  
Hao Yu ◽  
Hongjuan Wang ◽  
Wenxu Zheng
Keyword(s):  
Carbon Nanotubes ◽  
Liquid Phase ◽  
Liquid Phase Oxidation ◽  
Phase Oxidation ◽  
Oxidation Of Ethylbenzene

scholarly journals Ionic liquid functionlized on multiwall carbon nanotubes for nickel and lead determination in human serum and urine samples by micro solid-phase extraction

2021 ◽  
Vol 4 (02) ◽  
pp. 72-85
Author(s):  
Arezou Lari ◽  
Nafiseh Esmaeili ◽  
Homanaz Ghafari
Keyword(s):  
Carbon Nanotubes ◽  
Ionic Liquid ◽  
Liquid Phase ◽  
Solid Phase Extraction ◽  
Human Serum ◽  
Solid Phase ◽  
Multiwall Carbon Nanotubes ◽  
Urine Samples ◽  
Phase Extraction ◽  
Multiwall Carbon

In this study, a novel synthesis adsorbent, 1-(3-aminopropyl)-3-methylimidazolium hexafluorophosphate functionlized on multiwall carbon nanotubes ([Apmim][PF6]-MWCNTs, IL@MWCNTS) was used for nickel/lead (Ni/Pb) extraction and determination by dispersive ionic liquid micro solid-phase extraction (DIL-μ-SPE) coupled to electrothermal atomic absorption spectrometry (ET-AAS). After dilution of 20 mg of IL@MWCNTS in 200 μL of acetone, the mixture was injected to 10 mL of human serum/urine samples at pH of 8.0. After sonication for 5 min, the Ni(II) / Pb(II) were extracted by ionic liquid phase and then centrifuged for 2.5 min. The upper liquid phase set aside and Ni(II) / Pb(II) loaded in adsorbent were back-extracted by acidic solution at pH=2-3. Finally, the concentration of total nickel and lead was determined by ET-AAS. By optimizing, the limit of detection, linear range, and enrichment factor for nickel and lead were obtained (0.05 μg L−1; 0.1 μg L−1), (0.2-5.8 μg L−1; 0.4-30 μg L−1) and 24.7; 5.1, respectively (RSD less than 5%). Also, the capacity absorption of IL@MWCNTS for nickel and lead ions were achieved 149.3 mg g-1 and 162.5 mg g-1, respectively.  The DIL-μ-SPE procedure was validated for nickel and lead extraction by spiking of real samples and ICP-MS analyzer.

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