In situ formation and ordered assembly of gold nanoclusters to nano-ribbons at the oil/water interface

2011 ◽  
Vol 21 (39) ◽  
pp. 15167 ◽  
Author(s):  
FuKe Wang ◽  
Xinhai Zhang ◽  
Zheng Zhang ◽  
Chaobin He
Keyword(s):  
Gold Nanoclusters ◽  
Water Interface ◽  
Oil Water ◽  
In Situ Formation ◽  
Ordered Assembly

A lotus-inspired janus hybrid film enabled by interfacial self-assembly and in situ asymmetric modification

2018 ◽  
Vol 54 (91) ◽  
pp. 12804-12807 ◽  
Author(s):  
Yun Liang ◽  
Jiangwei Shi ◽  
Peng Xiao ◽  
Jiang He ◽  
Feng Ni ◽  
...  
Keyword(s):  
Self Assembly ◽  
Hybrid Film ◽  
Water Interface ◽  
Assembly Process ◽  
Lotus Leaf ◽  
Air Interface ◽  
Oil Water

A lotus leaf inspired Janus hybrid film was exquisitely fabricated through a self-assembly process on the water/air interface with subsequent in situ asymmetric modification at the oil/water interface. The interfacial asymmetric decoration strategy thus provides a novel pathway for achieving a 2D Janus hybrid film with asymmetric wettability and functionality.

scholarly journals In Situ Synthesis of a Supramolecular Hydrogelator at an Oil/Water Interface for Stabilization and Stimuli-Induced Fusion of Microdroplets

2017 ◽  
Vol 56 (32) ◽  
pp. 9410-9414 ◽  
Author(s):  
Yuki Nishida ◽  
Akiko Tanaka ◽  
Shota Yamamoto ◽  
Yudai Tominaga ◽  
Nobuaki Kunikata ◽  
...  
Keyword(s):  
In Situ Synthesis ◽  
Water Interface ◽  
Oil Water

Responsive Emulsions Stabilized by Amphiphilic Supramolecular Graft Copolymers Formed in Situ at the Oil–Water Interface

Langmuir ◽  
2018 ◽  
Vol 34 (20) ◽  
pp. 5750-5758 ◽  
Author(s):  
Huazhang Guo ◽  
Pin Liu ◽  
Huaming Li ◽  
Chong Cheng ◽  
Yong Gao
Keyword(s):  
Graft Copolymers ◽  
Water Interface ◽  
Oil Water

Experimental Analysis of Alkali-Brine-Alcohol Phase Behavior with High Acid Number Crude Oil

2021 ◽  
pp. 1-19
Author(s):  
D. Magzymov ◽  
T. Clemens ◽  
B. Schumi ◽  
R. T. Johns
Keyword(s):  
Crude Oil ◽  
Phase Behavior ◽  
Oil Recovery ◽  
Complex Mixture ◽  
Acid Number ◽  
Field Application ◽  
Water Interface ◽  
Total Acid ◽  
Oil Water

Summary A potential enhanced oil recovery technique is to inject alkali into a reservoir with a high-total acid number (TAN) crude to generate soap in situ and reduce interfacial tension (IFT) without the need to inject surfactant. The method may be cost-effective if the IFT can be lowered enough to cause significant mobilization of trapped oil while also avoiding formation of gels and viscous phases. This paper investigates the potential field application of injecting alkali to generate in-situ soap and favorable phase behavior for a high-TAN oil. Oil analyses show that the acids in the crude are a complex mixture of various polar acids and not mainly carboxylic acids. The results from phase behavior experiments do not undergo typical Winsor microemulsion behavior transition and subsequent ultralow IFTs below 1×10−3 mN/m that are conventionally observed. Instead, mixing of alkali and crude/brine generate water-in-oil macroemulsions that can be highly viscous. For a specific range of alkali concentrations, however, phases are not too viscous, and IFTs are reduced by several orders of magnitude. Incremental coreflood recoveries in this alkali range are excellent, even though not all trapped oil is mobilized. The viscous phase behavior at high alkali concentrations is explained by the formation of salt-crude complexes, created by acids from the crude oil under the alkali environment. These hydrophobic molecules tend to agglomerate at the oil-water interface. Together with polar components from the crude oil, they can organize into a highly viscous network and stabilize water droplets in the oleic phase. Oil-soluble alcohol was added to counter those two phenomena at large concentrations, but typical Winsor phase behavior was still not observed. A physicochemical model is proposed to explain the salt-crude complex formation at the oil-water interface that inhibits classical Winsor behavior.

scholarly journals Liquid ToF-SIMS revealing the oil, water, and surfactant interface evolution

2020 ◽  
Vol 22 (21) ◽  
pp. 11771-11782 ◽  
Author(s):  
Yanjie Shen ◽  
Jenn Yao ◽  
Jiyoung Son ◽  
Zihua Zhu ◽  
Xiao-Ying Yu
Keyword(s):  
Water Clusters ◽  
Cluster Ions ◽  
Water Interface ◽  
Interface Evolution ◽  
Tof Sims ◽  
Oil Water ◽  
Insight Into

In situ liquid ToF-SIMS, a unique tool to observe water clusters and cluster ions, gives new insight into the evolution of the oil–water interface.

scholarly journals In Situ Synthesis of a Supramolecular Hydrogelator at an Oil/Water Interface for Stabilization and Stimuli-Induced Fusion of Microdroplets

2017 ◽  
Vol 129 (32) ◽  
pp. 9538-9542 ◽  
Author(s):  
Yuki Nishida ◽  
Akiko Tanaka ◽  
Shota Yamamoto ◽  
Yudai Tominaga ◽  
Nobuaki Kunikata ◽  
...  
Keyword(s):  
In Situ Synthesis ◽  
Water Interface ◽  
Oil Water

Porous materials from cellulose nanocrystal and mxene surfactants at the oil/water interface

2020 ◽  
Author(s):  
Bingqing qian ◽  
Haiqiao Wang ◽  
Dong Wang ◽  
Hao-Bin Zhang ◽  
Jessica Wu ◽  
...  
Keyword(s):  
Porous Materials ◽  
Cellulose Nanocrystal ◽  
Water Interface ◽  
Oil Water

The role of (bio)surfactant sorption in promoting the bioavailability of nutrients localized at the solid-water interface

1999 ◽  
Vol 39 (7) ◽  
pp. 91-98 ◽  
Author(s):  
Ryan N. Jordan ◽  
Eric P. Nichols ◽  
Alfred B. Cunningham
Keyword(s):  
Mass Transfer ◽  
Cell Membrane ◽  
Substrate Concentration ◽  
Water Interface ◽  
Industrial Systems ◽  
Solid Liquid Interface ◽  
Solid Liquid ◽  
Surfactant Sorption

Bioavailability is herein defined as the accessibility of a substrate by a microorganism. Further, bioavailability is governed by (1) the substrate concentration that the cell membrane “sees,” (i.e., the “directly bioavailable” pool) as well as (2) the rate of mass transfer from potentially bioavailable (e.g., nonaqueous) phases to the directly bioavailable (e.g., aqueous) phase. Mechanisms by which sorbed (bio)surfactants influence these two processes are discussed. We propose the hypothesis that the sorption of (bio)surfactants at the solid-liquid interface is partially responsible for the increased bioavailability of surface-bound nutrients, and offer this as a basis for suggesting the development of engineered in-situ bioremediation technologies that take advantage of low (bio)surfactant concentrations. In addition, other industrial systems where bioavailability phenomena should be considered are addressed.

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