Chemical oxidation of aniline and N-methylaniline: A kinetic study by Raman spectroscopy

2013 ◽  
Vol 106 ◽  
pp. 34-40 ◽  
Author(s):  
Regina Mažeikienė ◽  
Gediminas Niaura ◽  
Albertas Malinauskas
Keyword(s):  
Raman Spectroscopy ◽  
Kinetic Study ◽  
Chemical Oxidation

Kinetic study on chemical oxidation of leucoemeraldine base polyaniline to emeraldine base

1993 ◽  
Vol 26 (2) ◽  
pp. 364-369 ◽  
Author(s):  
Doo Kyung Moon ◽  
Masahiro Ezuka ◽  
Tsukasa Maruyama ◽  
Kohtaro Osakada ◽  
Takakazu Yamamoto
Keyword(s):  
Kinetic Study ◽  
Chemical Oxidation ◽  
Emeraldine Base

Kinetic Study of the Imidization of a Poly(ester amic acid) by FT-Raman Spectroscopy

1997 ◽  
Vol 30 (13) ◽  
pp. 3747-3753 ◽  
Author(s):  
Yongsok Seo ◽  
Sang Mook Lee ◽  
Dong Young Kim ◽  
Kwang Ung Kim
Keyword(s):  
Raman Spectroscopy ◽  
Kinetic Study ◽  
Amic Acid ◽  
Ft Raman Spectroscopy ◽  
Ft Raman

Experimental and theoretical studies on the mechanism for chemical oxidation of multiwalled carbon nanotubes

RSC Advances ◽  
2014 ◽  
Vol 4 (55) ◽  
pp. 28826-28831 ◽  
Author(s):  
B. M. Maciejewska ◽  
M. Jasiurkowska-Delaporte ◽  
A. I. Vasylenko ◽  
K. K. Kozioł ◽  
S. Jurga
Keyword(s):  
Electron Microscopy ◽  
Carbon Nanotubes ◽  
Transmission Electron Microscopy ◽  
Raman Spectroscopy ◽  
Multiwalled Carbon Nanotubes ◽  
Chemical Oxidation ◽  
Theoretical Studies ◽  
Multiwalled Carbon ◽  
Transmission Electron ◽  
Experimental And Theoretical Studies

In this study, the oxidation of multiwalled carbon nanotubes (MWCNTs) sonicated and/or refluxed in acids (H2SO4/HNO3) was investigated using a combination of high-resolution transmission electron microscopy, Raman spectroscopy, Fourier transform infrared spectroscopy, and ab initio computational methods.

scholarly journals Application of Raman Spectroscopy to the Biooxidation Analysis of Sulfide Minerals

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
J. V. García-Meza ◽  
R. H. Lara ◽  
H. R. Navarro-Contreras
Keyword(s):  
Raman Spectroscopy ◽  
Cell Density ◽  
Laser Scanning ◽  
Extracellular Polymeric Substances ◽  
Chemical Oxidation ◽  
Laser Scanning Microscopy ◽  
Confocal Laser ◽  
Acidithiobacillus Thiooxidans ◽  
Dynamic Activity ◽  
Sulfur Species

We report the application of confocal laser scanning microscopy CLSM and Raman spectroscopy on the (bio)chemical oxidation of pyrite and chalcopyrite, in order to understand how surface sulfur species () affects biofilm evolution during mineral colonization by Acidithiobacillus thiooxidans. We found that cells attachment occurs as cells clusters and monolayered biofilms within the first 12 h. Longer times resulted in the formation of micro- and macrocolonies with variable cell density and higher epifluorescence signal of the extracellular polymeric substances (EPS), indicating double dynamic activity of A. thiooxidans: sulfur biooxidation and biofilm formation. Raman spectra indicated consumption modification during biofilm evolution. Hence, cell density increase was primarily associated with the presence of ; the presence of refractory sulfur species on the mineral surfaces does not to affect biofilm evolution. The EPS of the biofilms was mainly composed of extracellular hydrophobic compounds (vr. gr. lipids) and a minor content of hydrophilic exopolysaccharides, suggesting a hydrophobic interaction between attached cells and the altered pyrite and chalcopyrite.

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