A novel anatase TiO2@MIL-101(Cr) nanocomposite for photocatalytic degradation of Bisphenol A

  1. Yuan Tang,
  2. Xiaohong YinORCID Logo,
  3. Manman Mu,
  4. Yue Jiang,
  5. Xiaoli Li,
  6. Hao Zhang and
  7. Tianwei Ouyang

Submitting author affiliation: Tianjin University of Technology, Tianjin, China

Beilstein Arch. 2019, 2019141. doi:10.3762/bxiv.2019.141.v1

Published 08 Nov 2019

  • Preprint

Abstract

     A series of novel anatase TiO2@MIL-101(Cr) composite was synthesized by solvothermal method for photocatalytic degrading bisphenol A (BPA). Compared with pure TiO2 and MIL-101(Cr), these composites exhibited superior catalytic performance for the BPA photocatalytic degradation. The characterization results determined the chemical structure and combination between TiO2 and MIL-101(Cr). The optical properties of the composites demonstrated enhanced catalytic efficiency with effectively separating the electron-hole pair and narrowing band gap. Moreover, the TiO2 amount and surface area in the composites jointly influenced the activity of photocatalytic degradation of BPA, which, meanwhile, was evaluated by changing the initial pH, catalyst dosage and initial BPA concentration. Under optimal condition, 59% TiO2@MIL-101(Cr) could reach 99.4% BPA degradation and the corresponding rate constant was 0.0138 min-1 in 240 min under UV irradiation. Furthermore, TiO2@MIL-101(Cr) possessed the excellent stability and was reusable. The reasonable pathway of BPA degradation was proposed based on the detected intermediates during the degradation, where the oxidative radicals •O2 played a dominant role.

Keywords: Anatase TiO2; TiO2@MIL-101(Cr); Photocatalytic degradation of BPA; Synergistic effect; Photocatalytic mechanism

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When a peer-reviewed version of this preprint is available in the Beilstein Journals, this information will be updated in the information box above. If no peer-reviewed version is available, please cite this preprint using the following information:

Tang, Y.; Yin, X.; Mu, M.; Jiang, Y.; Li, X.; Zhang, H.; Ouyang, T. Beilstein Arch. 2019, 2019141. doi:10.3762/bxiv.2019.141.v1

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