Synthesis of zero-valent copper-chitosan nanocomposites and their application for treatment of hexavalent chromium

Shao Jung Wu, Tzong Horng Liou, Fwu Long Mi

研究成果: 雜誌貢獻文章同行評審

62 引文 斯高帕斯(Scopus)

摘要

This study used ionotropic crosslinking to synthesize chitosan-tripolyphosphate chelating resin beads, which are used to fabricate zero-valent copper-chitosan nanocomposites. The copper nanoparticles were dispersed on chitosan-tripolyphosphate beads, and were thus able to maintain appropriate dispersion and stability, which greatly improves their applicability. The fabrication process contains two steps: using chitosan-tripolyphosphate beads to adsorb Cu(II) ions, followed by chemical reduction to reduce Cu(II) ions to zero-valent copper. This study explored the adsorption of synthesized chitosan-tripolyphosphate beads to Cu(II) ions, and used SEM/EDS, XPS, and TEM to examine the properties of zero-valent copper-chitosan nanocomposites. The results showed that, the adsorption behavior of hexavalent chromium from aqueous solution onto fabricated nanocomposites has better adsorption capacity than that of the chitosan-tripolyphosphate beads.

原文英語
頁(從 - 到)4348-4353
頁數6
期刊Bioresource Technology
100
發行號19
DOIs
出版狀態已發佈 - 十月 2009
對外發佈

ASJC Scopus subject areas

  • 生物工程
  • 環境工程
  • 廢物管理和處置

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