Diglycolamic acid-functionalized multiwalled carbon nanotubes as a highly efficient sorbent for f-block elements: experimental and theoretical investigations

2017 ◽  
Vol 41 (11) ◽  
pp. 4531-4545 ◽  
Author(s):  
Arijit Sengupta ◽  
Ashish Kumar Singha Deb ◽  
Kinshuk Dasgupta ◽  
V. C. Adya ◽  
Sk. Musharaf Ali
Keyword(s):  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Selective Separation ◽  
Multiwalled Carbon ◽  
Functionalized Carbon Nanotubes ◽  
Highly Efficient ◽  
Theoretical Investigations ◽  
Functionalized Multiwalled Carbon Nanotubes

Diglycolamic acid-functionalized carbon nanotubes were employed for the efficient and selective separation of Pu4+, PuO22+ and Am3+.

CATALYTIC OXIDATION OF p-TOLUIDINE AT MULTIWALLED FUNCTIONALIZED CARBON NANOTUBES

2002 ◽  
Vol 01 (03n04) ◽  
pp. 277-283 ◽  
Author(s):  
M. CROSTON ◽  
J. LANGSTON ◽  
R. SANGOI ◽  
K. S. V. SANTHANAM
Keyword(s):  
Carbon Nanotubes ◽  
Hydrogen Peroxide ◽  
Catalytic Oxidation ◽  
Multiwalled Carbon Nanotubes ◽  
Absorption Spectroscopy ◽  
Multiwalled Carbon ◽  
Functionalized Carbon Nanotubes ◽  
Slow Reaction ◽  
Functionalized Multiwalled Carbon Nanotubes

The oxidation of p-toluidine in acetonitrile by hydrogen peroxide is a very slow reaction which produces 4,4'-dimethylazoxybenzene as the product. The presence of functionalized multiwalled carbon nanotubes (CNT) in the above reaction produces 4,4'-dimethylazobenzene. The reactions have been followed by GC/MS, which show the following mass nos.: 226,92 (without CNT) and 210,120,92,28 (with CNT). UV-VIS absorption spectroscopy shows maximum corresponding to 4,4'-dimethylazobenzene at 444 nm. The rate of formation of 4,4'-dimethylazobenzene has been determined as 0.0093 s -1.

Synthesis of Nanocomposites of V2OO5©Selenium Nanoparticles and Multiwalled Carbon Nanotubes for Antimicrobial Activity

2021 ◽  
Vol 21 (11) ◽  
pp. 5673-5680
Author(s):  
Muthukrishnan Francklin Philips ◽  
Jothirathinam Thangarathinam ◽  
Jayakumar Princy ◽  
Cyril Arockiaraj Crispin Tina ◽  
Cyril Arockiaraj Crispin Tina ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Antimicrobial Activity ◽  
Multiwalled Carbon Nanotubes ◽  
Xrd Analysis ◽  
X Ray Diffraction ◽  
Multiwalled Carbon ◽  
X Ray ◽  
Functionalized Multiwalled Carbon Nanotubes ◽  
Uv Visible ◽  
Micro Organisms

The authors report the preparation of the nanocomposite comprising of vanadium pentoxide (V2O5) and selenium (Se) nanoparticles and functionalized multiwalled carbon nanotubes (MWCNTs) (V2O5@Se NPs/MWCNTs). Since Se NPs possesses extraordinary physicochemical properties including larger surface area with higher adsorption capacity, V2O5 NPs were adsorbed onto Se NPs surface through physisorption process (designated as V2O5@Se NPs). The nanocomposite synthesized hydrothermally was evaluated for its antimicrobial activity. The morphology and microstructure of the nanocomposite were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD) analysis, respectively. Fourier transform infrared spectroscopy (FTIR) and UV-Visible spectroscopy (UV-Vis) were employed to analyze the spectral properties of nanocomposite. The microbicidal efficacy of nanocomposite was tested against Gram-negative (G-)ZGram-positive (G+) bacteria and fungus. This is the first report on the synthesis of V2O5@Se NPs/MWCNTs nanocomposites by chemical method that showed microbicidal effect on micro-organisms. The thiol (-SH) units facilitates the enrichment of V2O5@Se NPs onto MWCNTs surface. Ultimately, it reflects on the significant antimicrobial activity of V2O5@Se NPs/MWCNTs.

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