نتایج جستجو برای: liquid exfoliation

تعداد نتایج: 220300  

Journal: :Canadian Journal of Chemical Engineering 2022

Abstract Although easily scalable, the production of graphene nanoplatelets (GNP) by means liquid‐phase exfoliation graphite flakes (GF) remains an energy‐ and time‐intensive process. In this work, we demonstrate that significant time energy can be saved in GNP when employing expanded (EG) a surfactant‐assisted liquid phase Owing to its increased interlayer distance, EG accomplished much shorte...

Journal: :ASM science journal 2023

The graphene sheets were aqueous processed via simple method liquid phase exfoliation. Sodium perylene-3, 4, 9, 10-tetracarboxylate (NaPTCA) used as surfactant to assist the exfoliation process. purpose of this research is investigate impact NaPTCA concentration on yield graphite sheets. degree was found be greatly influenced upon surfactant. 1.0 mgmL-1 identified optimal produced had a distinc...

Journal: :Nanoscale 2016
J M Munuera J I Paredes S Villar-Rodil M Ayán-Varela A Martínez-Alonso J M D Tascón

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...

Journal: :JOM 2021

Abstract Ultrasound-assisted liquid-phase exfoliation is a promising method for manufacturing two-dimensional materials. Understanding the effect of ultrasonication parameters such as temperature and input power on developed pressure field pivotal optimization process. Limited research has been carried out to determine optimal exfoliation, with some data generating disputed results. Simply maxi...

Journal: :Polymer Journal 2022

Graphene is an allotrope of carbon consisting a single-atom-thick honeycomb lattice nanostructure. Among the various preparation methods for graphene, liquid-phase exfoliation graphite mass-producible and cost-effective. To facilitate in organic solvents, polymers can be employed as dispersants. We synthesized polymer dispersants with monomer ratios molecular weights investigated efficient acqu...

Journal: :Journal of the American Chemical Society 2015
Stanley S Chou Yi-Kai Huang Jaemyung Kim Bryan Kaehr Brian M Foley Ping Lu Conner Dykstra Patrick E Hopkins C Jeffrey Brinker Jiaxing Huang Vinayak P Dravid

Lithiation-exfoliation produces single to few-layered MoS2 and WS2 sheets dispersible in water. However, the process transforms them from the pristine semiconducting 2H phase to a distorted metallic phase. Recovery of the semiconducting properties typically involves heating of the chemically exfoliated sheets at elevated temperatures. Therefore, it has been largely limited to sheets deposited o...

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