Sodium stearate adsorption onto titania pigment

Hendrik A. Capelle; Leanne G. Britcher; Gayle E. Morris

doi:10.1016/j.jcis.2003.08.031

Sodium stearate adsorption onto titania pigment

Hendrik A. Capelle, Leanne G. Britcher, Gayle E. Morris

Research output: Contribution to journal › Article › peer-review

49 Citations (Scopus)

Abstract

The interaction of sodium stearate with titania pigment particles from aqueous suspension has been investigated using thermal analysis and infrared spectroscopy combined with electrochemical studies. Thermogravimetric analysis (TGA) was used both to determine the adsorption isotherm and to investigate the interaction behavior. Monolayer coverage is determined to be 0.95 mg/m 2; however, unlike the case with organic solvents, multilayer adsorption occurs. Diffuse reflectance infrared Fourier transform (DRIFT) spectroscopy, combined with TGA, revealed that the surface monolayer is chemically bound. DRIFT spectroscopic data also indicated that the stearate bridged across two aluminum atoms. Subsequent stearate layers were physisorbed to the stearate monolayer and were readily removed with acetone washing.

Original language	English
Pages (from-to)	293-300
Number of pages	8
Journal	Journal of Colloid and Interface Science
Volume	268
Issue number	2
DOIs	https://doi.org/10.1016/j.jcis.2003.08.031
Publication status	Published - 15 Dec 2003
Externally published	Yes

Keywords

Adsorption
Alumina
DRIFT spectroscopy
Sodium stearate
TGA
Titanium dioxide

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10.1016/j.jcis.2003.08.031

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title = "Sodium stearate adsorption onto titania pigment",

abstract = "The interaction of sodium stearate with titania pigment particles from aqueous suspension has been investigated using thermal analysis and infrared spectroscopy combined with electrochemical studies. Thermogravimetric analysis (TGA) was used both to determine the adsorption isotherm and to investigate the interaction behavior. Monolayer coverage is determined to be 0.95 mg/m 2; however, unlike the case with organic solvents, multilayer adsorption occurs. Diffuse reflectance infrared Fourier transform (DRIFT) spectroscopy, combined with TGA, revealed that the surface monolayer is chemically bound. DRIFT spectroscopic data also indicated that the stearate bridged across two aluminum atoms. Subsequent stearate layers were physisorbed to the stearate monolayer and were readily removed with acetone washing.",

keywords = "Adsorption, Alumina, DRIFT spectroscopy, Sodium stearate, TGA, Titanium dioxide",

author = "Capelle, {Hendrik A.} and Britcher, {Leanne G.} and Morris, {Gayle E.}",

year = "2003",

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day = "15",

doi = "10.1016/j.jcis.2003.08.031",

language = "English",

volume = "268",

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journal = "Journal of Colloid and Interface Science",

issn = "0021-9797",

publisher = "Academic Press Inc.",

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TY - JOUR

T1 - Sodium stearate adsorption onto titania pigment

AU - Capelle, Hendrik A.

AU - Britcher, Leanne G.

AU - Morris, Gayle E.

PY - 2003/12/15

Y1 - 2003/12/15

N2 - The interaction of sodium stearate with titania pigment particles from aqueous suspension has been investigated using thermal analysis and infrared spectroscopy combined with electrochemical studies. Thermogravimetric analysis (TGA) was used both to determine the adsorption isotherm and to investigate the interaction behavior. Monolayer coverage is determined to be 0.95 mg/m 2; however, unlike the case with organic solvents, multilayer adsorption occurs. Diffuse reflectance infrared Fourier transform (DRIFT) spectroscopy, combined with TGA, revealed that the surface monolayer is chemically bound. DRIFT spectroscopic data also indicated that the stearate bridged across two aluminum atoms. Subsequent stearate layers were physisorbed to the stearate monolayer and were readily removed with acetone washing.

AB - The interaction of sodium stearate with titania pigment particles from aqueous suspension has been investigated using thermal analysis and infrared spectroscopy combined with electrochemical studies. Thermogravimetric analysis (TGA) was used both to determine the adsorption isotherm and to investigate the interaction behavior. Monolayer coverage is determined to be 0.95 mg/m 2; however, unlike the case with organic solvents, multilayer adsorption occurs. Diffuse reflectance infrared Fourier transform (DRIFT) spectroscopy, combined with TGA, revealed that the surface monolayer is chemically bound. DRIFT spectroscopic data also indicated that the stearate bridged across two aluminum atoms. Subsequent stearate layers were physisorbed to the stearate monolayer and were readily removed with acetone washing.

KW - Adsorption

KW - Alumina

KW - DRIFT spectroscopy

KW - Sodium stearate

KW - TGA

KW - Titanium dioxide

U2 - 10.1016/j.jcis.2003.08.031

DO - 10.1016/j.jcis.2003.08.031

M3 - Article

C2 - 14643230

SN - 0021-9797

VL - 268

SP - 293

EP - 300

JO - Journal of Colloid and Interface Science

JF - Journal of Colloid and Interface Science

IS - 2

ER -

Sodium stearate adsorption onto titania pigment

Abstract

Keywords

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