Ionic potential: A general material criterion for the selection of highly efficient arsenic adsorbents

Ronghui Li, Weiyi Yang, Yu Su, Qi Li, Shian Gao, Jian Ku Shang

Research output: Contribution to journalArticle

Abstract

Arsenic is a highly toxic element and its contamination in water bodies is a worldwide problem. Arsenic adsorption with metal oxides/hydroxides-based adsorbents is an effective approach to remove arsenic species from water for the health of both human beings and the environment. However, no material criterion had been proposed for the selection of potential candidates. Equally puzzling is the fact that no clear explanation was available on the poor arsenic adsorption performance of some commonly used adsorbents, such as active carbon or silica. Furthermore, in-depth examination was also not available for the dramatically different competing adsorption effects of various anions on the arsenic adsorption. Through the arsenic adsorption mechanism study on these highly efficient arsenic adsorbents, we found that ionic potential could be used as a general material criterion for the selection of highly efficient arsenic adsorbents and such a criterion could help us to understand the above questions on arsenic adsorbents. This material criterion could be further applied to the selection of highly efficient adsorbents based on ligand exchange between their surface hydroxyl groups and adsorbates in general, which may be used for the prediction of novel adsorbents for the removal of various contaminations in water.

Original languageEnglish (US)
Pages (from-to)949-953
Number of pages5
JournalJournal of Materials Science and Technology
Volume30
Issue number10
DOIs
StatePublished - Oct 1 2014

Keywords

  • Arsenic adsorbents
  • Ionic potential
  • Ligand exchange
  • Material selection criterion
  • Metal oxides/hydroxides

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials
  • Mechanical Engineering
  • Polymers and Plastics
  • Metals and Alloys
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Ionic potential: A general material criterion for the selection of highly efficient arsenic adsorbents'. Together they form a unique fingerprint.

  • Cite this