• 文献标题:   The antimicrobial properties of carboxylated graphene oxide decorated with La particles
  • 文献类型:   Article
  • 作  者:   WANG XD, ZHOU NL, WANG WY, TANG YD, ZHANG J, SHEN J
  • 作者关键词:   graphene oxide, graphite oxide, lanthanum trichloride, kinetics of bacterial growth
  • 出版物名称:   NEW CARBON MATERIALS
  • ISSN:   1007-8827 EI 1872-5805
  • 通讯作者地址:   Nanjing Normal Univ
  • 被引频次:   3
  • DOI:  
  • 出版年:   2012

▎ 摘  要

Graphene oxide (GO) was functionalized by acetyl chloride to form carboxylated graphene oxide (GO-COOH). GO-COOH decorated with La particles with diameters between 0.2 and 1 mu m was prepared by the sonication of a LaCl3 aqueous solution with GO-COOH. The La-decorated GO-COOH was characterized by FT-LR, TGA and TEM, and its antibacterial properties were characterized by bacteria growth kinetics. Results showed that the La3+ ions were coordinated on edges and corrugated parts of the GO-COOH by physical and chemical bonding. The La-decorated GO-COOH had a pod inhibitory efficiency of 96.4% on the E. coli when its concentration was 0.5 mg/mL. It also had inhibitory effects on S. aureus and the P. Aeruginosa. The better antibacterial effect of the La-decorated GO-COOH than the corresponding La-decorated GTO was ascribed to the higher amount of La particles incorporated on the GO-COOH.