MnOxquantum dots decorated reduced graphene oxide/TiO2nanohybrids for enhanced activity by a UV pre-catalytic microwave method

Shiyi Cao, Chuansheng Chen, Juyan Zhang, Cui Zhang, Weiwei Yu, Bo Liang, Yuen Hong Tsang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

37 Citations (Scopus)

Abstract

Graphene/TiO2-based catalysts have attracted much attention as promising photocatalysts because of their low cost and excellent performance. In this report, we integrated the energy storage with high photocatalytic activity into a new model for wider applications in the field of energy utilization and environmental treatment. The MnOxquantum dots were decorated on reduced graphene oxide/TiO2hybrids (GTM) by combining UV excitation with microwave method for the first time. Experimental results show that GTM nanohybrids have excellent photocatalytic activity for organic dyes under UV-vis light and good antibacterial activity. Besides, UV preexcitation can improve the adsorbability and photocatalytic durability of GTM nanohybrids for high-concentration dyes. These enhancements are attributed to the rapid separation of photogenerated carriers from reduced graphene oxide and surface defects induced by UV excitation, and the broad light absorption aroused by the narrow band gap and MnOxquantum dots simultaneously.
Original languageEnglish
Pages (from-to)500-512
Number of pages13
JournalApplied Catalysis B: Environmental
Volume176-177
DOIs
Publication statusPublished - 1 Oct 2015

Keywords

  • Antibacterial activity
  • Energy storing
  • MnO quantum dots x
  • Reduced graphene oxide
  • UV preexcitation

ASJC Scopus subject areas

  • Catalysis
  • Environmental Science(all)
  • Process Chemistry and Technology

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