Details

Autor(en) / Beteiligte

• Dinda, Diptiman
• Gupta, Abhisek
• Saha, Shyamal Kumar

Titel

Removal of toxic Cr(vi) by UV-active functionalized graphene oxide for water purification

Ist Teil von

• Journal of materials chemistry. A, Materials for energy and sustainability, 2013-01, Vol.1 (37), p.11221-11228

Erscheinungsjahr

2013

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Extraction of hazardous heavy metals like As, Hg, Cd, Cr(vi), etc.for water purification is a great challenge. Exploiting the large surface area of graphene, in the present work, we have synthesized a UV-active 2,6-diamino pyridine-reduced graphene oxide (DAP-RGO) composite to remove Cr(vi) from acidic water solution. Here, the presence of an extra pyridinic-nitrogen lone pair facilitates the removal efficiency of excess Cr(vi) [500 mg L super(-1) in 3 h only] over reported results so far. In addition to that, the unique advantage of this UV-active material is the enhancement of removal efficiency by 18% at a higher pH value. We believe that this study will bring forth a new class of UV-active graphene based adsorbents with remarkably high removal efficiency for toxic heavy metals from waste-water in future.