• 文献标题:   Synthesis of a Palladium-Graphene Material and Its Application for Formaldehyde Determination
  • 文献类型:   Article
  • 作  者:   QIAO J, GUO YJ, SONG JP, ZHANG YC, SUN TJ, SHUANG SM, DONG C
  • 作者关键词:   formaldehyde electroxidation, nanohybrid, palladiumgraphene
  • 出版物名称:   ANALYTICAL LETTERS
  • ISSN:   0003-2719 EI 1532-236X
  • 通讯作者地址:   Shanxi Univ
  • 被引频次:   10
  • DOI:   10.1080/00032719.2012.751543
  • 出版年:   2013

▎ 摘  要

A novel electrochemical sensor for formaldehyde determination was fabricated by using the Pd-graphene nanohybrides. Pd-graphene nanohybrids were prepared via a concise chemical reduction method. Raman spectroscopy, X-ray diffraction (XRD), and transmission electron microscopy (TEM) were used for the characterization of structure and morphology of the nanohybrids. The result showed that Pd nanoparticles were uniformly dispersed and were well-separated on the graphene sheets. The Pd-graphene nanohybrids were dissolved in Nafion and modified on the glassy carbon electrode to fabricate the electrochemical sensor. This proposed electrochemical sensor performed excellent electrocatalytic activity toward formaldehyde oxidation in alkaline medium. The peak current was linearly related to the formaldehyde concentration in the range of 7.75 mu M to 62.0 mu M with the detection limit of 3.15 mu M. The highly sensitive and robust graphene based Pd nanohybrids sensor offers a promising and practical tool for formaldehyde sensing and chemical analysis.