Reliable Exfoliation of Large-Area High-Quality Flakes of Graphene …
2015年9月3日 · For graphene exfoliation, these simple process steps increased the yield and the area of the transferred flakes by more than 50 times compared to the established exfoliation methods. Raman and AFM characterization shows that the graphene flakes are of similar high quality as those obtained in previous reports.
Layer-engineered large-area exfoliation of graphene - Science
2020年10月28日 · In this study, we introduce the technique layer-engineered exfoliation (LEE) that not only guarantees large-area graphene but also provides control of the selective number of graphene layers owing to the difference in the interfacial binding energy between the …
Universal mechanical exfoliation of large-area 2D crystals
2020年5月15日 · Here we introduce a contamination-free, one-step and universal Au-assisted mechanical exfoliation method and demonstrate its effectiveness by isolating 40 types of single-crystalline monolayers,...
A review on mechanical exfoliation for the scalable production of graphene
We highlight the recent progress on mechanical exfoliation for graphene production during the last decade. The emphasis is set on the widely used sonication method with the latest insight into sonication-induced defects, the newly explored ball milling method, the fluid dynamics method that has emerged in the last three years, and the ...
High-quality graphene via microwave reduction of solution ... - Science
2016年9月1日 · These results suggest that reduction of GO using microwaves is highly efficient and realizes the goal of achieving high-quality graphene with desirable properties by solution exfoliation. We used the modified Hummers’ method to oxidize graphite and solubilize it into monolayered GO flakes in water ( 19 ).
High-yield scalable graphene nanosheet production from …
2018年9月28日 · Electrochemical exfoliation is a promising bulk method for producing graphene from graphite; in this method, an applied voltage drives ionic species to intercalate into...
Synthesis of graphene materials by electrochemical exfoliation: …
Further, we summarize electrochemical exfoliation methods used to dope graphene materials, introduce covalent functional groups, incorporate various nanoparticles, and assembly of graphene architectures.
Recent advances of the graphite exfoliation processes and …
2021年11月24日 · Exfoliation of graphene from graphite is one of the popular methods for mass production of graphene. The objective to exfoliating graphite is to overcome the Van der Waals connection within graphene layers while keeping the size of the graphene flakes constant.
Scalable production of large quantities of defect-free few-layer ...
2014年4月20日 · 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...
Liquid-Phase Exfoliation of Graphene: An Overview on Exfoliation …
2018年11月15日 · Shen et al. reported graphite could be exfoliated to prepare few-layer high-quality graphene in water (the concentration up to 0.058 mg mL −1) with the addition of ammonia solution, which released the gaseous ammonia playing a pivotal role in the graphene exfoliation. This preparation method was simple and did not involve any organic solvents ...