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Environmentally switched superwetting surfaces that can be used for separating various oil/water mixtures are of particular interest due to the increasing difficulty and complexity in oily wastewater treatment. Here, a novel fluorine-free pH-responsive coating is prepared by surface modification of SiO nanoparticles with dimethyloctadecyl [3-(trimethoxysilyl) propyl] ammonium chloride and (N, N-dimethyl-3-aminopropyl) trimethoxysilane. With the assistance of polyethylene imine as a binder, such coating can be used for different porous substrates, e. g. cotton fabric and filter paper, to develop separation materials having tunable superhydrophilicity/superhydrophobicity and high antibacterial property. Due to the well-controlled surface wettability upon the pH variation, the as-prepared materials can effectively separate various types of oil/water mixtures with efficiency higher than 99.9%, including the layered oil/water mixture, water-in-oil emulsions and oil-in-water emulsions stabilized by different types of surfactants. Additionally, the materials can resist strong acid/base solutions and various organic solvents as well as 50-cycle mechanical abrasion and 120-cycle tape-peeling without losing anti-wetting performance. Featuring the tunable surface wettability, chemical/mechanical robustness, and antibacterial activity, such coating holds promising applications for treating various oil/water mixtures in harsh and biological-contamination conditions.
This article was published in the following journal.
Name: Journal of colloid and interface science
Linear alkylbenzene sulfonate (LAS) is a particular member of the emerging contaminants, because of its increasingly ubiquitous use and tremendous harm to the environment and wastewater treatment plan...
Typical antifogging coatings based on hydrophilic polymers are soft and susceptible to mechanical damage. In this paper, an antifogging coating that is both scratch-resistant and self-healing is fabri...
Traditional superhydrophobic cotton fabrics (SCFs) for oil/water separation were usually fabricated by surface coating with inorganic nanoparticles combined with nonrenewable and nonbiodegradable or e...
Recently, two-way oil/water separation materials bearing both "water-removing" and "oil-removing" functions are of great interest for treating environmental water pollution. Despite having switchable ...
The application of superhydrophobic materials for oil/water separation is receiving increasing attention. Meanwhile, durable superhydrophobic/superoleophilic materials and simple preparation methods a...
The purpose of this study is to determine whether spherical silica can achieve similar or greater extrinsic dental stain and plaque removal, in comparison to dentifrices containing higher ...
The aim of the present study was to determine whether oral dosing, up to 9 grams/day, of porous silica administered as a food additive can be used safely in normal weight and obese male hu...
In this study, the investigators will evaluate the cardiac structure and function, focusing on the myocardial water content and interstitial fibrosis, in patients with active acromegaly in...
Women over 35 years old are likely to suffer from impaired oocyte repair capacity. Teratozoospermia is a condition reflects morphological affection of sperm. These spermatozoa would add an...
This study evaluates effect of anterior component separation and posterior component separation and transversus abdominis muscle release methods for treatment of midline ventral hernias.
A highly-sensitive (in the picomolar range, which is 10,000-fold more sensitive than conventional electrophoresis) and efficient technique that allows separation of PROTEINS; NUCLEIC ACIDS; and CARBOHYDRATES. (Segen, Dictionary of Modern Medicine, 1992)
A non-crystalline form of silicon oxide that has absorptive properties. It is commonly used as a desiccating agent and as a stationary phase for CHROMATOGRAPHY. The fully hydrated form of silica gel has distinct properties and is referred to as SILICIC ACID.
The separation of individuals or groups resulting in the lack of or minimizing of social contact and/or communication. This separation may be accomplished by physical separation, by social barriers and by psychological mechanisms. In the latter, there may be interaction but no real communication.
Any of the numerous types of clay which contain varying proportions of Al2O3 and SiO2. They are made synthetically by heating aluminum fluoride at 1000-2000 degrees C with silica and water vapor. (From Hawley's Condensed Chemical Dictionary, 11th ed)
The separation of particles from a suspension by passage through a filter with very fine pores. In ultrafiltration the separation is accomplished by convective transport; in DIALYSIS separation relies instead upon differential diffusion. Ultrafiltration occurs naturally and is a laboratory procedure. Artificial ultrafiltration of the blood is referred to as HEMOFILTRATION or HEMODIAFILTRATION (if combined with HEMODIALYSIS).
Biological therapy involves the use of living organisms, substances derived from living organisms, or laboratory-produced versions of such substances to treat disease. Some biological therapies for cancer use vaccines or bacteria to stimulate the body&rs...