Recovery of copper from a wastewater for preparation of Cu@C nanoparticles

Y. M. Chiu, C. H. Huang, F. C. Chang, H. Y. Kang, H. Paul Wang

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)


Copper in the chemical mechanical polishing (CMP) wastewater has been effectively chelated with starch at the atomic ratios of carbon (in starch) to Cu (in wastewater) of 3-42. By carbonization of the Cu2+-starch complexes at 623 K for 30 min, nanosize-controllable metallic copper (Cu) embedded in the carbon shells (thickness = 3-5 nm) (Cu@C) can be formed. The carbon shells consisted of mainly diamond and graphite observed by Raman can prevent the nanosize core Cu from being oxidized and aggregated. Notably, by manipulating the C/Cu ratios, nanosize Cu ranging from 6 to 40 nm can be obtained.

Original languageEnglish
Pages (from-to)279-282
Number of pages4
JournalSustainable Environment Research
Issue number4
Publication statusPublished - 2011

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Water Science and Technology
  • Waste Management and Disposal
  • Pollution


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