Redox and Doubly pH-Switchable Pickering Emulsion

Langmuir : the ACS Journal of Surfaces and Colloids
Xiaojiang LiHongsheng Lu

Abstract

In this work, a novel Pickering emulsion is stabilized by silica nanoparticles functioned with a redox and pH-responsive surfactant FA-DMDA-Ox that is prepared simply by direct neutralization of ferrocenecarboxylic acid (FA) and N,N-dimethyldodecylamine (DMDA) and exhibits redox and doubly pH-switchable behavior. Here, the Pickering emulsion can be stabilized easily by combining hydrophilic silica nanoparticles with less than 0.1 wt % FA-DMDA-Ox. After adding Na2SO3 and H2O2 alternately, the demulsification and emulsification of this Pickering emulsion are controlled reversibly. Moreover, the emulsion is switched "off" upon the addition of HCl and switched "on" upon the addition of NaOH and is also switched off upon the addition of NaOH and switched on upon the addition of HCl, which demonstrate the doubly pH-switchable behavior. Based on the analysis of ζ-potential, contact angle, and adsorbed amount of silica nanoparticles, the pH and redox-switchable mechanism of the Pickering emulsion are analyzed. Here, the redox-switchable behavior is induced by the reversible adsorption and desorption of FA-DMDA-Ox on the surface of silica nanoparticles. The pH-switchable behavior is driven by the controllable dispersion systems of silic...Continue Reading

References

Mar 9, 2005·Langmuir : the ACS Journal of Surfaces and Colloids·Sonia MelleGerald G Fuller
Jul 1, 2005·Angewandte Chemie·Bernard P BinksSyuji Fujii
Jun 5, 2007·Angewandte Chemie·Bernard P Binks, Jhonny A Rodrigues
Nov 1, 2008·Langmuir : the ACS Journal of Surfaces and Colloids·Jian Li, Harald D H Stöver
Feb 25, 2011·Langmuir : the ACS Journal of Surfaces and Colloids·Jun ZhouYi Liu
Aug 2, 2016·Langmuir : the ACS Journal of Surfaces and Colloids·Jianzhong JiangBernard P Binks
Aug 10, 2016·Langmuir : the ACS Journal of Surfaces and Colloids·Rui-Xue BaiTao Meng
Feb 14, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Kaihong LiuBernard P Binks
May 10, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Bernard P Binks
Oct 27, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Yongmin ZhangYun Fang
Nov 18, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Chun-Yan XieTao Meng
Apr 10, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Qiuyan JiangJiarui Wang
Sep 25, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Gaihuan RenDejun Sun
Jan 21, 2020·Langmuir : the ACS Journal of Surfaces and Colloids·Peiyao ZhuZhiyu Huang
Mar 19, 2020·Journal of Agricultural and Food Chemistry·Xiaofei RenYongmin Zhang

❮ Previous
Next ❯

Citations

May 25, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Ya LiuZhiyu Huang

❮ 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.