Characterization of Oxidation Product Films on Lead in Aqueous Media by In Situ Raman Spectroscopy

1979 ◽  
Author(s):  
R. Thibeau ◽  
C. Brown ◽  
R. Heidersbach
Keyword(s):  
Raman Spectroscopy ◽  
Oxidation Product ◽  
Aqueous Media ◽  
In Situ Raman Spectroscopy ◽  
In Situ Raman

Microfluidics with in situ Raman spectroscopy for the characterization of non-polar/aqueous interfaces

2017 ◽  
Vol 2 (2) ◽  
pp. 189-200 ◽  
Author(s):  
Bruno Pinho ◽  
Ryan L. Hartman
Keyword(s):  
Raman Spectroscopy ◽  
Aqueous Interfaces ◽  
In Situ Raman Spectroscopy ◽  
In Situ Raman

The design of microfluidics with in situ Raman spectroscopy is reported in the present work for the investigation of immiscible non-polar/aqueous interactions.

scholarly journals An in situ Raman spectroscopy-based microfluidic “lab-on-a-chip” platform for non-destructive and continuous characterization of Pseudomonas aeruginosa biofilms

2015 ◽  
Vol 51 (43) ◽  
pp. 8966-8969 ◽  
Author(s):  
Jinsong Feng ◽  
César de la Fuente-Núñez ◽  
Michael J. Trimble ◽  
Jie Xu ◽  
Robert E. W. Hancock ◽  
...  
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Raman Spectroscopy ◽  
Lab On A Chip ◽  
Confocal Raman Microscopy ◽  
In Situ Raman Spectroscopy ◽  
In Situ Raman ◽  
Confocal Raman ◽  
Non Destructive

Pseudomonas aeruginosabiofilm was cultivated and characterized in a microfluidic “lab-on-a-chip” platform coupled with confocal Raman microscopy in a non-destructive manner.

scholarly journals Advanced Synthesis and Characterization of Vanadia/Titania Catalysts through a Molecular Approach

Catalysts ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 322
Author(s):  
Eleni Tella ◽  
Antonios Trimpalis ◽  
Athanasios Tsevis ◽  
Christos Kordulis ◽  
Alexis Lycourghiotis ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Temperature Dependent ◽  
In Situ Raman Spectroscopy ◽  
Monomeric Species ◽  
Synthesis Conditions ◽  
In Situ Raman ◽  
Titania Surface ◽  
Inner Sphere

Vanadia/titania catalysts were synthesized by the equilibrium deposition filtration (EDF) method, which is a synthesis route that follows a molecular-level approach. The type of interfacial deposition as well as the interfacial speciation of the deposited oxo-V(V) species were determined by means of a model that takes into account experimental “proton-ion” curves and “adsorption edges”. It is shown that at pH ≥ 9.5, the deposition proceeds exclusively through the formation of mono-substituted inner sphere monomeric species in an “umbrella”-like Ti–OV(OH)2O configuration, whilst with lowering of the pH, a second species, namely the disubstituted inner sphere quadrameric species in a (Ti-O)2V4O10 configuration possessing two mono-oxo V=O and two di-oxo V(=O)2 terminations gradually prevails, which is in co-existence with the monomeric species. Raman spectroscopy is used for verifying the solution speciation, which is different compared to the interfacial speciation of the deposited oxo-V(V) species. Furthermore, in situ Raman spectroscopy was used to verify the model-predicted interfacial speciation of the deposited oxo-V(V) species and to monitor the temperature-dependent evolution up to 430 °C. Hence, a controlled formation of a specific vanadia species on a titania surface is enabled, which, depending on the synthesis conditions, can result in specific catalyst characteristics and thus possibly different catalytic behavior for a specific reaction.

Characterization of O2–CeO2 Interactions Using In Situ Raman Spectroscopy and First-Principle Calculations

ChemPhysChem ◽  
2006 ◽  
Vol 7 (9) ◽  
pp. 1957-1963 ◽  
Author(s):  
Y. M. Choi ◽  
Harry Abernathy ◽  
Hsin-Tsung Chen ◽  
M. C. Lin ◽  
Meilin Liu
Keyword(s):  
Raman Spectroscopy ◽  
First Principle ◽  
In Situ Raman Spectroscopy ◽  
First Principle Calculations ◽  
In Situ Raman

Characterization of Hydrothermally Prepared Titanate Nanotube Powders by Ambient and In Situ Raman Spectroscopy

2009 ◽  
Vol 1 (1) ◽  
pp. 130-135 ◽  
Author(s):  
Sun-Jae Kim ◽  
Yeong-Ung Yun ◽  
Hyo-Jin Oh ◽  
Sung Ho Hong ◽  
Charles A. Roberts ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
In Situ Raman Spectroscopy ◽  
Titanate Nanotube ◽  
In Situ Raman

In situ Raman Spectroscopy of Aza-Arenes Adsorbed at the Aqueous/Silica Interface

1994 ◽  
Vol 48 (9) ◽  
pp. 1043-1053 ◽  
Author(s):  
Robert A. Matzner ◽  
Roger C. Bales ◽  
Jeanne E. Pemberton
Keyword(s):  
Raman Spectroscopy ◽  
Aqueous Media ◽  
Adsorbed Species ◽  
In Situ Raman Spectroscopy ◽  
Compound A ◽  
Surface Sites ◽  
In Situ Raman ◽  
Aza Arenes ◽  
Aqueous Silica

Raman spectroscopy is used to study the effect of pH on the solute/sorbent interactions and the chemical nature of the adsorbed species at the aqueous/silica interface for the aza-arenes acridine, quinoline, and pyridine. The neutral aza-arene is hydrogen-bonded to surface sites in aqueous media in which the pH is above the p Ka of the compound. A protonated aza-arene/ClO4− ion pair interacts with surface sites in aqueous solutions in which the pH is below the pKa of the compound. These results may be useful in predicting the fate of these environmentally significant compounds in groundwater.

Sign in / Sign up

Export Citation Format

Share Document