Nanocomposites of graphene oxide-hydrated zirconium oxide for simultaneous removal of As(III) and As(V) from water

Xubiao Luo*, Chengcheng Wang, Lichuan Wang, Fang Deng, Shenglian Luo, Xinman Tu, Chak Tong AU

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

159 Citations (Scopus)

Abstract

Hydrated zirconium oxide (ZrO(OH) 2 nanoparticles were modified with graphite oxide (GO) (denoted herein as GO-ZrO(OH) 2 by hydro-thermal co-precipitation reaction, and were used for the simultaneous removal of As(III) and As(V) from drinking water. The GO-ZrO(OH) 2 nanocomposites were characterized using Fourier transformer infrared spectroscopy, X-ray diffraction analysis, high resolution transmission electron microscopy, Zeta-potential, and specific surface area analysis. The size of ZrO(OH) 2 particles in GO-ZrO(OH) 2 is below 5nm, and the specific surface area of GO-ZrO(OH) 2 is about 4 times that of ZrO(OH) 2 nanoparticles. The GO-ZrO(OH) 2 nanocomposites showed high adsorption capacity in a wide pH range, and the monolayer adsorption amounts calculated based on the Langmuir adsorption model were 95.15 and 84.89mg/g for As(III) and As(V), respectively, which are 3.54 and 4.64 times that of ZrO(OH) 2 nanoparticles. The high adsorption capacity is attributed to good dispersion of ZrO(OH) 2 nanoparticles in the GO substrate. The GO-ZrO(OH) 2 nanocomposites can simultaneously remove As(III) and As(V) in water. Moreover, GO-ZrO(OH) 2 showed good anti-interference ability to co-existing anions, and exhibited excellent recyclability. The experimental results suggest that GO-ZrO(OH) 2 is a promising adsorbent for the removal of arsenic from drinking water.

Original languageEnglish
Pages (from-to)98-106
Number of pages9
JournalChemical Engineering Journal
Volume220
DOIs
Publication statusPublished - 5 Mar 2013

Scopus Subject Areas

  • Chemistry(all)
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

User-Defined Keywords

  • Adsorption
  • Arsenic removal
  • Graphite oxide
  • Nanocomposite
  • ZrO(OH)2

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