Determination of the Surface Coverage of Adsorbed Dextran and β-Cyclodextrin Derivatives on Gold by Surface Titration

Langmuir ◽  
2009 ◽  
Vol 25 (9) ◽  
pp. 4845-4847 ◽  
Author(s):  
Stephanie Hornig ◽  
Tim Liebert ◽  
Alan R. Esker ◽  
Sarah L. Stoll ◽  
Julie Mertzman ◽  
...  
Keyword(s):  
Surface Coverage ◽  
Cyclodextrin Derivatives ◽  
Surface Titration

The determination of the surface area of silica by laser Raman spectroscopy

1976 ◽  
Vol 29 (3) ◽  
pp. 507 ◽  
Author(s):  
RP Cooney ◽  
NT Tam
Keyword(s):  
Raman Spectroscopy ◽  
Raman Spectrum ◽  
Surface Area ◽  
Surface Coverage ◽  
Silica Surface ◽  
Quantitative Agreement ◽  
Laser Raman Spectroscopy ◽  
Laser Raman ◽  
Bet Method

Changes in the Raman spectrum of pyridine on a silica surface with increasing surface coverage may be used to determine the monolayer capacity. The method, which is independent of the BET method, produces a result which is in quantitative agreement with the BET result.

Determination of the Orientation of Adsorbed Pyridine and γ-MPS on Alumina Surface by Photoacoustic FT-IR Spectroscopy

1986 ◽  
Vol 40 (6) ◽  
pp. 851-856 ◽  
Author(s):  
Marek W. Urban ◽  
Jack L. Koenig
Keyword(s):  
Surface Coverage ◽  
Hydroxyl Groups ◽  
Alumina Surface ◽  
Surface Hydroxyl ◽  
Adsorbed Pyridine ◽  
Ft Ir ◽  
Infrared Photoacoustic Spectroscopy ◽  
Pyridinium Ion ◽  
Ft Ir Spectroscopy

Fourier transform infrared photoacoustic spectroscopy has been applied to determine the structure and orientation of pyridine and γ-Metacryl-oxypropyltriethoxysilane (γ-MPS) on γ-Al2O3 surface. Adsorption of pyridine on activated γ-Al2O3 leads to formation of a pyridinium ion (pyN+-H) and pyridine N-oxide. The orientation of pyridinium ion on the alumina surface is random, whereas the pyridine N-oxide is parallel with respect to the surface. The adsorption of oligomers of γ-MPS gives parallel layers on the alumina surface. At low γ-MPS surface coverage, the carbonyl groups interact with the surface hydroxyl groups. Increasing surface coverage leads to an excess of the free C=O species.

Determination of Surface Coverage of an Adsorbate on Silica Using FTIR Spectroscopy

1999 ◽  
Vol 76 (2) ◽  
pp. 253 ◽  
Author(s):  
Jeanne E. Pemberton ◽  
Laurie L. Wood ◽  
Ghanshyam S. Ghoman
Keyword(s):  
Ftir Spectroscopy ◽  
Surface Coverage

Determination of Surface Coverage and Orientation of Reduced Cytochromecon a Silica Surface with Polarized ATR Spectroscopy

2007 ◽  
Vol 111 (35) ◽  
pp. 13062-13067 ◽  
Author(s):  
Casey M. Kraning ◽  
Tara L. Benz ◽  
Kayla S. Bloome ◽  
Gregory C. Campanello ◽  
Victoria S. Fahrenbach ◽  
...  
Keyword(s):  
Surface Coverage ◽  
Silica Surface ◽  
Atr Spectroscopy

Magnetic Mesoporous Silica/Chitosan/Polyproline: A Novel Nanocomposite Toward Sensing of Some Clinically Relevant Biomolecules

Nano LIFE ◽  
2017 ◽  
Vol 07 (03n04) ◽  
pp. 1750006 ◽  
Author(s):  
Mohammad Hasanzadeh ◽  
Soodabeh Hassanpour ◽  
Arezoo Saadati ◽  
Nasrin Shadjou ◽  
Ahad Mokhtarzadeh
Keyword(s):  
Mesoporous Silica ◽  
Surface Coverage ◽  
Linear Sweep Voltammetry ◽  
Differential Pulse ◽  
One Step ◽  
Pulse Voltammetry ◽  
Small Biomolecules ◽  
Magnetic Mesoporous Silica ◽  
Mcm 41

In this paper, free-radical polymerization inside magnetic mesoporous silica has been investigated in order to open a route to functional polymer–silica composite nanomaterials with well-defined mesoporosity. Proline monomers integrated with chitosan (CS) were electropolymerized into amino-functionalized magnetic mesoporous silica. The fabrication of polyproline-amino-functionalized magnetic mesoporous silica–CS nanohybrid on glassy carbon electrode (GCE) was performed using one step electrodeposition regime. Field emission scanning electron microscopy (FE-SEM) was confirmed as produced nanohybrid material containing polyproline (PPR) into the pores of magnetic (Fe3O[Formula: see text] mobile crystalline material-41 grafted with 3-aminopropyl groups (MMS) which leads to increase of surface coverage of PPR. The results indicate that PPR was successfully generated inside the pores of the amino-functionalized Mobil Composition of Matter No. 41 (nPrNH2-MCM-41) and that the amine group was capable of protonating the polymer, producing polyproline, the most conductive one, without the addition of another acid source during the polymerization step. Therefore, it was evaluated some electrochemical aspects of the prepared nanohybrid using cyclic voltammetry, differential pulse voltammetry and linear sweep voltammetry. Finally, the electroactivity of polyproline -Fe3O4-nPrNH2-MCM-41-chitosan nanohybrid (PPR-MMS-CS) modified GCE toward detection and determination of some clinically relevant small biomolecules was studied.

Determination of the Surface Coverage of Exfoliated Carbon Nanotubes by Surfactant Molecules in Aqueous Solution

Langmuir ◽  
2007 ◽  
Vol 23 (7) ◽  
pp. 3646-3653 ◽  
Author(s):  
Nadia Grossiord ◽  
Paul van der Schoot ◽  
Jan Meuldijk ◽  
Cor E. Koning
Keyword(s):  
Carbon Nanotubes ◽  
Aqueous Solution ◽  
Surface Coverage
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