C60 aminofullerene immobilized on silica as a visible-light-activated photocatalyst

Jaesang Lee, Yuri MacKeyev, Min Cho, Lon J. Wilson, Jae Hong Kim, Pedro J J Alvarez

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

A new strategy is described to immobilize photoactive C60 aminofullerene on silica gel (3-(2-succinic anhydride)propyl functionalized silica), thus enabling facile separation of the photocatalyst for recycling and repeated use. An organic linker moiety containing an amide group was used to anchor C60 aminofullerene to the functionalized silica support. The linker moiety prevents aqueous C60 aggregation/agglomeration (shown by TEM images), resulting in a remarkable enhancement of photochemical 1O2 production under visible light irradiation. With no loss in efficacy of 1O2 production plus insignificant chemical modification of the aminoC60/silica photocatalyst after multiple cycling, the system offers a promising new visible-light-activated photocatalyst. Under visible-light irradiation, the aminoC60/silica photocatalyst is capable of effective and kinetically enhanced oxidation of Ranitidine and Cimetidine (pharmaceutical pollutants) and inactivation of MS-2 bacteriophage compared to aqueous solutions of the C60 aminofullerene alone. Thus, this photocatalyst could enable water treatment in less developed areas by alleviating dependence on major infrastructure, including the need for electricity.

Original languageEnglish
Pages (from-to)9488-9495
Number of pages8
JournalEnvironmental Science and Technology
Volume44
Issue number24
DOIs
Publication statusPublished - 2010 Dec 15
Externally publishedYes

Fingerprint

Photocatalysts
Silicon Dioxide
silica
Light
irradiation
Agglomeration
Electricity
Ranitidine
Irradiation
Water Purification
Cimetidine
Silica Gel
Recycling
Bacteriophages
Amides
bacteriophage
Chemical modification
Anchors
anchor
Water treatment

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry
  • Medicine(all)

Cite this

C60 aminofullerene immobilized on silica as a visible-light-activated photocatalyst. / Lee, Jaesang; MacKeyev, Yuri; Cho, Min; Wilson, Lon J.; Kim, Jae Hong; Alvarez, Pedro J J.

In: Environmental Science and Technology, Vol. 44, No. 24, 15.12.2010, p. 9488-9495.

Research output: Contribution to journalArticle

Lee, Jaesang ; MacKeyev, Yuri ; Cho, Min ; Wilson, Lon J. ; Kim, Jae Hong ; Alvarez, Pedro J J. / C60 aminofullerene immobilized on silica as a visible-light-activated photocatalyst. In: Environmental Science and Technology. 2010 ; Vol. 44, No. 24. pp. 9488-9495.
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