scholarly journals In‐situ structural characterizations of electrochemical intercalation of graphite compounds

Carbon Energy ◽  
2019 ◽  
Vol 1 (2) ◽  
pp. 200-218 ◽  
Author(s):  
Na Li ◽  
Dong Su
Keyword(s):  
Electrochemical Intercalation ◽  
Structural Characterizations

Molecular Grafting on Si(111) Surfaces: An Electrochemical Approach

1996 ◽  
Vol 451 ◽  
Author(s):  
C. Henry de Villeneuve ◽  
J. Pinson ◽  
F. Ozanam ◽  
J. N. Chazalviel ◽  
P. Allongue
Keyword(s):  
Aqueous Solution ◽  
Electrochemical Method ◽  
Organic Molecules ◽  
Diazonium Salts ◽  
Molecular Films ◽  
Electrochemical Approach ◽  
The Stability ◽  
Structural Characterizations ◽  
Direct Attachment

ABSTRACTThis works addresses the question of the direct attachment of organic molecules on Si(111) by an electrochemical method. Anodic grafting of -OR group is demonstrated by in-situ STM and the LDOS characterized. The grafting of aryl groups, by reduction of aryl diazonium salts in aqueous solution, is also described. This approach leads to well ordered and close-packed thin molecular films with various functionality. Different chemical and structural characterizations conclude to a Si-C binding, between the Si surface and aryl groups. The stability of films is also investigated.

In Situ Raman Scattering Studies of the Electrochemical Intercalation of Graphite in Sulfuric Acid

1982 ◽  
Vol 20 ◽  
Author(s):  
C.H. Olk ◽  
V. Yeh ◽  
F.J. Holler ◽  
P.C. Eklund
Keyword(s):  
Sulfuric Acid ◽  
Raman Scattering ◽  
Electrochemical Synthesis ◽  
High Frequency ◽  
In Situ Raman ◽  
Lower Stage ◽  
Electrochemical Intercalation ◽  
The Moment ◽  
Sudden Transition

ABSTRACTIn situ Raman scattering studies of the high-frequency carbon intralayer modes in graphite-H2SO4 have been carried out during the electrochemical intercalation of graphite in sulfuric acid. The data show that within an optical depth of ∼ 200 Å the entire c-face undergoes a sudden transition to the next lower stage (n−1) at the moment when the bulk has just completed forming stage n. Raman data collected in the “overcharge” and “overoxidation” regimes of the electrochemical synthesis indicate rapid shifting of the peaks during these times, indicating a significant increase in the oxidation of the carbon layers.

Nanocomposites Based on Montmorillonite/Acrylic Copolymer for Aqueous Coating of Soft Surfaces

2009 ◽  
Vol 151 ◽  
pp. 129-134 ◽  
Author(s):  
Onur Yılmaz ◽  
Aurica P. Chiriac ◽  
Catalina Natalia Cheaburu ◽  
Loredana E. Nita ◽  
Gürbüz Gülümser ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Layered Silicate ◽  
Acrylic Copolymer ◽  
Modified Montmorillonite ◽  
Organically Modified Montmorillonite ◽  
Film Forming ◽  
Organically Modified ◽  
Polymerization Method ◽  
Structural Characterizations

Nanocomposites based on layered silicate organically modified montmorillonite (Cloisite 20A) and acrylic comonomers (butyl acrylate and methyl methacrylate) were prepared by simple “in situ” batch emulsion polymerization method. The particle size and zeta potential of the emulsions were analyzed. The structural characterizations of the nanocomposites were performed by FTIR, thermal behaviors of the films were investigated by DSC, mechanical properties of the films were tested by DMA and intercalation success was viewed by XRD. The mechanical properties of the nanocomposites were improved significantly especially at the temperatures above Tg. The ultrasonication process was found to be useful for increasing the homogeneity of the emulsions and intercalation success. The obtained nanocomposite emulsions were applied on garment leathers in a finishing formulation as aqueous binders sharing good film forming ability and elasticity.

IN SITU X-RAY ABSORPTION STUDY OF MODIFICATIONS IN V2O5 INDUCED BY THE ELECTROCHEMICAL INTERCALATION OF LITHIUM

1992 ◽  
pp. 147-152
Author(s):  
C. CARTIER ◽  
E. PROUZET ◽  
A. TRANCHANT ◽  
F. VILLAIN ◽  
H. DEXPERT ◽  
...  
Keyword(s):  
Absorption Study ◽  
X Ray ◽  
Electrochemical Intercalation ◽  
X Ray Absorption
Sign in / Sign up

Export Citation Format

Share Document