Three-dimensional Fe2O3–TiO2–graphene aerogel nanocomposites with enhanced adsorption and visible light-driven photocatalytic performance in the removal of RhB dyes

Jing Jie Zhang, Pan Qi, Jie Li, Xiu Cheng Zheng, Pu Liu, Xin Xin Guan, Guangping Zheng

Research output: Journal article publicationJournal articleAcademic researchpeer-review

47 Citations (Scopus)

Abstract

A series of Fe 2O 3 and TiO 2 co-doped graphene aerogel (Fe 2O 3–TiO 2–GA) nanocomposites with a unique 3D architecture are assembled by a one-pot hydrothermal method combined with freeze-drying. The one with 30 wt% Fe 2O 3 exhibits the highest adsorptivity (95.0%) and the another with 25 wt% Fe 2O 3 displays the highest total efficiency (97.7%) including adsorption and visible light-driven photocatalytic degradation for rhodamine B dyes (20.0 mg L −1, 25 mL) within 1 h over 5.0 mg of the nanocomposites. The materials also display satisfactory cyclic stability and the removal efficiency can be 81.8% even after four runs. Additionally, a related photocatalytic mechanism is proposed.

Original languageEnglish
Pages (from-to)407-415
Number of pages9
JournalJournal of Industrial and Engineering Chemistry
Volume61
DOIs
Publication statusPublished - 25 May 2018

Keywords

  • 3D porous architecture
  • Adsorbents
  • Fe O –TiO –GA
  • Rhodamine B dyes
  • Visible light-driven photocatalysts

ASJC Scopus subject areas

  • Chemical Engineering(all)

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