• 文献标题:   High peroxidase catalytic activity of exfoliated few-layer graphene
  • 文献类型:   Article
  • 作  者:   WANG ZB, LV XC, WENG J
  • 作者关键词:  
  • 出版物名称:   CARBON
  • ISSN:   0008-6223 EI 1873-3891
  • 通讯作者地址:   Xiamen Univ
  • 被引频次:   29
  • DOI:   10.1016/j.carbon.2013.05.051
  • 出版年:   2013

▎ 摘  要

Few-layer graphene prepared from graphite exfoliated by chitosan has a preserved structure without oxidation or destruction of the sp(2) character of the carbon plane and exhibits a higher peroxidase catalytic activity than that of graphene oxide (GO) and its reduced form. The peroxidase catalytic activity of as-obtained few-layer graphene is 45 times higher than that of GO and 4 times higher than that of reduced GO with the same concentration of 30 mu g mL(-1) and the detection limit of hydrogen peroxide is 10 nM. The excellently catalytic performance can be attributed to the fast electron transfer on the surface of few-layer graphene, which is further confirmed by electrochemical characterization. The as-prepared few-layer graphene has been used to determine hydrogen peroxide in three real water samples with satisfactory results. (c) 2013 Elsevier Ltd. All rights reserved.