• 文献标题:   Scalable Preparation of Low-Defect Graphene by Urea-Assisted Liquid-Phase Shear Exfoliation of Graphite and Its Application in Doxorubicin Analysis
  • 文献类型:   Article
  • 作  者:   LEE CS, SHIM SJ, KIM TH
  • 作者关键词:   graphene, mass production, shear exfoliation, physical exfoliation
  • 出版物名称:   NANOMATERIALS
  • ISSN:  
  • 通讯作者地址:   Soonchunhyang Univ
  • 被引频次:   0
  • DOI:   10.3390/nano10020267
  • 出版年:   2020

▎ 摘  要

The mass production of graphene is of great interest for commercialization and industrial applications. Here, we demonstrate that high-quality graphene nanosheets can be produced in large quantities by liquid-phase shear exfoliation under ambient conditions in organic solvents, such as 1-methyl-2-pyrrolidinone (NMP), with the assistance of urea as a stabilizer. We can achieve low-defect graphene (LDG) using this approach, which is relatively simple and easily available, thereby rendering it to be an efficient route for the mass production of graphene. We also demonstrate the electrochemical sensing of an LDG-modified electrode for the determination of doxorubicin (DOX). The sensor shows an enhanced electrocatalytic property towards DOX, leading to a high sensitivity (7.23 x 10(-1) mu M/mu A) with a detection limit of 39.3 nM (S/N = 3).