Experimental and theoretical studies on competitive adsorption of aromatic compounds on reduced graphene oxides

2016 ◽  
Vol 4 (15) ◽  
pp. 5654-5662 ◽  
Author(s):  
Shujun Yu ◽  
Xiangxue Wang ◽  
Yuejie Ai ◽  
Xiaoli Tan ◽  
Tasawar Hayat ◽  
...  

The individual and competitive adsorption of benzene, aniline and naphthylamine on reduced graphene oxides were studied by batch experiments and theoretical density functional theory (DFT).

2016 ◽  
Vol 59 (4) ◽  
pp. 412-419 ◽  
Author(s):  
Yuantao Chen ◽  
Wei Zhang ◽  
Shubin Yang ◽  
Aatef Hobiny ◽  
Ahmed Alsaedi ◽  
...  

Molecules ◽  
2019 ◽  
Vol 24 (2) ◽  
pp. 238 ◽  
Author(s):  
Tan-Qing Weng ◽  
Yi-Fan Huang ◽  
Lou-Sha Xue ◽  
Jie Cheng ◽  
Shan Jin ◽  
...  

Five ferrocene alkymethylimidazolium cations 1a–1d and 2 with different alkyl spacer lengths were reinvestigated using voltammetry and density functional theory (DFT) calculations. The voltammetric responses of ligand 2 toward various anions are described in detail. An interesting and unprecedented finding from both experimental and theoretical studies is that coupled electron and intramolecular anion (F−) transfer may be present in these molecules. In addition, it was also observed that, in these studied molecules, the electrostatic attraction interaction toward F− would effectively vanish beyond 1 nm, which was previously reported only for cations.


RSC Advances ◽  
2015 ◽  
Vol 5 (36) ◽  
pp. 28743-28761 ◽  
Author(s):  
Lutendo C. Murulana ◽  
Mwadham M. Kabanda ◽  
Eno E. Ebenso

Corrosion inhibition studies of mild steel in aqueous HCl by some sulphonamides have been investigated using weight loss, potentiodynamic polarization (PDP), Electrochemical Impedance Spectroscopy (EIS) and Density Functional Theory (DFT).


2016 ◽  
Vol 3 (6) ◽  
pp. 1318-1326 ◽  
Author(s):  
Wencheng Song ◽  
Tongtong Yang ◽  
Xiangxue Wang ◽  
Yubing Sun ◽  
Yuejie Ai ◽  
...  

Competitive interactions of common antibiotics (i.e. tetracycline (TC) and sulfamethazine (SMZ)) with reduced graphene oxides (rGOs) were demonstrated by batch experiments, spectroscopic analysis and DFT calculations.


2021 ◽  
Vol 61 (1) ◽  
Author(s):  
B.K. Barik ◽  
H.M. Mallya ◽  
R.K. Sinha ◽  
S. Chidangil

In this work, experimental and theoretical studies on danthron and emodin are presented. Experimentally, Fourier transform infrared (FTIR), Raman and UV–Vis spectra of danthron and emodin were recorded. The structure and vibrational frequencies of the molecules were calculated using density functional theory (DFT) with the B3LYP functional using the triple zeta (TZVP) basis set. Among various possible structures of danthron and emodin, it was found that the most stable structures involve intramolecular hydrogen bonds between two OH and C=O groups. The theoretical IR spectra of the most stable conformations of danthron and emodin correlate well with their experimental FTIR. Detailed vibrational frequency analysis was done for all the vibrational modes obtained and were assigned to the ring vibrations along with the stretching and bending of specific bond vibrations. The bands obtained from the experimental FTIR and Raman spectra of both the molecules correlate well with their theoretical data.


2005 ◽  
Vol 886 ◽  
Author(s):  
Øystein Prytz ◽  
Ole M. Løvvik ◽  
Johan Taftø

ABSTRACTWe determine the plasmon energies of the skutterudites CoP3, CoAs3 and CoSb3 by electron energy loss spectroscopy, and compare with calculated values from the Drude model and density functional theory (DFT). For these compounds, whose doped versions have potential applications as thermoelectric materials, there is a relatively large discrepancy between experiment and theory based on the Drude model as well as the DFT-calculations. We also study the transitions from occupied to unoccupied states near the Fermi-level that show up at energies lower than the plasmon energies. The features observed are in general agreement with the DFT-calculations.


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