Adsorption of nonionic surfactants with ethylene oxide headgroup chemistry at the titania-water interface

The Journal of Physical Chemistry. B
Shannon M Notley

Abstract

The adsorption of nonionic surfactants such as poly(ethylene oxide) alkyl ether surfactant (C(n)E(m)) and polysorbate (commonly referred to as Tween) was studied at the titania-water interface using optical reflectometry and atomic force microscopy (AFM). Previous reports have indicated little to no adsorption of these surfactants to titania, however under certain conditions, the surface excess was high. Typically significant adsorption was only observed when the titania surface was not strongly hydrated, that is, at point of zero charge and under low ionic strength conditions. For these amorphous titania surfaces prepared using atomic layer deposition, the pzc was at pH 5.1. Furthermore, the adsorbed amount of nonionic surfactant decreased with increasing ionic strength. This was attributed to the increased hydration of the titania interface from the specific adsorption of ions inhibiting the adsorption of the strongly hydrated ethylene oxide headgroup of the surfactant. AFM force measurements at the pzc in the presence of the surfactant as a function of concentration confirmed adsorption of the surfactant. Furthermore, soft contact imaging suggests that there was a spherical aggregate adsorbed layer structure above the critic...Continue Reading

References

Oct 17, 1977·Biochimica Et Biophysica Acta·J N IsraelachviliB W Ninham
Jan 15, 1996·Journal of Colloid and Interface Science·R RodríguezA E Regazzoni
Jan 2, 2003·Advances in Colloid and Interface Science·Marek Kosmulski
Jun 5, 2003·Advances in Colloid and Interface Science·R AtkinS Biggs
Mar 23, 2005·Langmuir : the ACS Journal of Surfaces and Colloids·Maria K MatssonPer M Claesson
Jun 23, 2005·Langmuir : the ACS Journal of Surfaces and Colloids·Maria K MatssonPer M Claesson
Jun 29, 2005·Langmuir : the ACS Journal of Surfaces and Colloids·J PenfoldR K Thomas
Jun 30, 2005·Langmuir : the ACS Journal of Surfaces and Colloids·Róbert MészárosTibor Gilányi
Aug 11, 2005·Langmuir : the ACS Journal of Surfaces and Colloids·Lambertus H TornJohannes Lyklema
Feb 14, 2006·The Journal of Physical Chemistry. B·Jing ZhangCan Li
Jul 1, 2008·Journal of Colloid and Interface Science·Lars-Erik Enarsson, Lars Wågberg
Sep 18, 2008·The Journal of Physical Chemistry. B·Shannon M Notley
Oct 1, 2009·The Journal of Physical Chemistry. B·Shannon M Notley
Oct 7, 2009·Langmuir : the ACS Journal of Surfaces and Colloids·Shaun C Howard, Vincent S J Craig
Feb 24, 2010·Langmuir : the ACS Journal of Surfaces and Colloids·I TuckerR K Thomas
Oct 30, 2010·The Journal of Physical Chemistry. B·Suprita K Singh, Shannon M Notley

❮ Previous
Next ❯

Citations

May 25, 2013·Environmental Science & Technology·Andrew T LambePaul Davidovits
Jan 26, 2013·Langmuir : the ACS Journal of Surfaces and Colloids·Kenichi ShimizuJean-François Boily
Nov 15, 2013·Langmuir : the ACS Journal of Surfaces and Colloids·Thipvaree WangchareansakShannon M Notley

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.