Plasmon-Induced Hot Electrons on Mesoporous Carbon for Decomposition of Organic Pollutants under Outdoor Sunlight Irradiation

Hsin Liang Chen, Chia Jui Li, Chien Jung Peng, Hoang Jyh Leu, Wei Hsuan Hung

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

In this study, a 4 in. CMK-8-Nafion membrane was fabricated using three-dimensional cubic ordered mesoporous carbon CMK-8 blended with a Nafion polymer. Plasmon-resonance hot electrons and holes from Au nanoparticles (NPs) combined with this CMK-8-Nafion membrane resulted in the effective decomposition of methyl orange (MO) due to the synergetic work of hot carriers with mesoporous carbon; a sample of Au/CMK-8-Nafion exposed to outdoor sunlight radiation for 150 min successfully removed 97% of MO. Fourier transform infrared spectroscopy (FTIR) was employed to examine the generation of hydroxyl groups (OH-) during decomposition. Finally, the spatial distribution of hydroxyl groups was also investigated across the different coverage densities of plasmonic Au NPs.

Original languageEnglish
Pages (from-to)327-334
Number of pages8
JournalACS Applied Materials and Interfaces
Volume9
Issue number1
DOIs
StatePublished - 11 Jan 2017

Keywords

  • FTIR spectroscopy
  • hot electron transfer
  • mesoporous carbon
  • photocatalytic water purification
  • plasmonic nanoparticles

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