Graphene oxide as structure-directing and morphology-controlling agent for the syntheses of heterostructured graphene-Bi2MoO6/Bi3.64Mo0.36O6.55 composites with high photocatalytic activity

Jian Ping Zou, Jun Ma, Qiong Huang, Sheng Lian Luo*, Jian Yu, Xu Biao Luo, Wei Li Dai, Jing Sun, Guo Cong Guo, Chak Tong AU, Steven L. Suib

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

57 Citations (Scopus)

Abstract

We report the new roles of graphene oxide (GO) as structure-directing and morphology-controlling agents in the nucleation and growth of heterostructured Bi2MoO6/Bi3.64Mo0.36O6.55 composites. The heterostructured composites have been fabricated through a facile one-step hydrothermal method, among which the interfacial contact between Bi2MoO6/Bi3.64Mo0.36O6.55 and graphene is achieved. The as-prepared composites were characterized by powder X-ray diffraction, UV-vis diffuse reflectance spectroscopy, scanning electron microscopy, transmission electron microscopy, and Raman spectroscopy. The composition, morphology and structure of the composites can be controlled by regulating the amount of GO used in the synthesis. We proposed a plausible mechanism for their formation, and evaluated them for the photocatalytic degradation of Rhodamine B (RhB). Among them, the 1% graphene-Bi2MoO6/Bi3.64Mo0.36O6.55 (1%G-BMO) composite performs the best. The efficacy of 1%G-BMO is attributed to the optimal Bi2MoO6/Bi3.64Mo0.36O6.55 phase ratio, the unique morphology and structure, as well as the effective separation of photogenerated electrons and holes.

Original languageEnglish
Pages (from-to)447-455
Number of pages9
JournalApplied Catalysis B: Environmental
Volume156-157
DOIs
Publication statusPublished - Sep 2014

Scopus Subject Areas

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

User-Defined Keywords

  • Bismuth molybdate
  • Controllable synthesis
  • Graphene
  • Graphene oxide
  • Photocatalyst

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