نتایج جستجو برای: chemical exfoliation
تعداد نتایج: 380518 فیلتر نتایج به سال:
We report the exfoliation of graphite in aqueous solutions under high shear rate [∼ 108 s-1] turbulent flow conditions, with a 100% exfoliation yield. The material is stabilized without centrifugation at concentrations up to 100 g/L using carboxymethylcellulose sodium salt to formulate conductive printable inks. The sheet resistance of blade coated films is below ∼2Ω/□. This is a simple and sca...
The interaction between Laponite and other constituents in complex systems greatly depends on its available surface area. We report a study of exfoliation dynamics of Laponite in aqueous suspensions by NMR relaxometry. It showed that Laponite particles exfoliate to the same extent in a concentration range of 0.5-3% w/w. Faster increase of specific wetted surface area of Laponite particles in mo...
To progress from the laboratory to commercial applications, it will be necessary to develop industrially scalable methods to produce large quantities of defect-free graphene. Here we show that high-shear mixing of graphite in suitable stabilizing liquids results in large-scale exfoliation to give dispersions of graphene nanosheets. X-ray photoelectron spectroscopy and Raman spectroscopy show th...
Herein, we explore the capacity degradation of dilithium rhodizonate salt (Li2C6O6) in lithium rechargeable batteries based on detailed investigations of the lithium de/insertion mechanism in Li2C6O6 using both electrochemical and structural ex situ analyses combined with first-principles calculations. The experimental observations indicate that the LixC6O6 electrode undergoes multiple two-phas...
Electrolytic--usually referred to as electrochemical--exfoliation of graphite in water under anodic potential holds enormous promise as a simple, green and high-yield method for the mass production of graphene, but currently suffers from several drawbacks that hinder its widespread adoption, one of the most critical being the oxidation and subsequent structural degradation of the carbon lattice...
OBJECTIVE Clue cells characteristic of bacterial vaginosis (BV) are thought to arise due to exfoliation of the vaginal epithelium; however, there is little published data connecting total numbers of epithelial cells to markers of BV. The purpose of this study was to enumerate exfoliated epithelial cells (independent of clue cells) and examine the relationship to Nugent score. STUDY DESIGN We ...
Hydrogen is a promising alternative to gasoline due its higher energy density and ability burn cleanly only producing H 2 O as by-product. Electrolytic water splitting an effective technique for generating molecular hydrogen. However, hydrogen be viable source produced from electrolysis, affordable durable electrocatalysts need developed replace platinum. Transition metal dichalcogenides (TMDs)...
EXFOLIATION SYNDROME Overview Exfoliation syndrome is the most widespread, classifiable cause of open-angle glaucoma worldwide.1 In this age-related disorder, fibrillar extracellular materials are produced by and accumulate in various ocular tissues (Figure 1). Friction between the anterior lens capsule and the iris disrupts the iris pigment epithelium, dispersing pigment throughout the anterio...
Graphene was easily obtained via one-step ultrasonic exfoliation of graphite powder in N-methyl-2-pyrrolidone. Scanning electron microscopy, transmission electron microscopy, Raman and particle size measurements indicated that the exfoliation efficiency and the amount of produced graphene increased with ultrasonic time. The electrochemical properties and analytical applications of the resulting...
PURPOSE To compare outcomes in exfoliation glaucoma versus primary open-angle glaucoma (POAG) after ab interno trabeculectomy alone (Trabectome) or in combination with cataract surgery and intraocular lens (IOL) implantation. SETTING Trabectome Study Group institutions. DESIGN Prospective nonrandomized cohort study. METHODS Outcomes included intraocular pressure (IOP), glaucoma medication...
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