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Preparation of Zn doped TiO 2 nanoparticles decorated on graphene f or photocatalytic degradation of tetrac y cline

FENG JUN ZHANG1, RI SHENG LI1, JIA MING LI1, CHENG JIA LIU1,2, CHAO JIANG1,2, CHUN LI KANG1,*

Affiliation

  1. Key Lab of Groundwater Resources and Environmen t, Ministry of Education, Jilin University, Changchun 130026, P. R. China
  2. China Power Engineering Consulting (Group) Corporation Northeast Electric Power Design Institute co., LTD. Chan g chun 130021, China

Abstract

Zn–doped Titanium dioxide nanoparticles decorated on graphene sheets (ZT-GR) were synthesized via one step hydro-thermal method. This method was to mix graphene oxide with Zn-doped Titanium dioxide in ethanol through a certain. The photocatalytic activity of this catalyst was assessed by photodegradation of tetracycline to verify. Graphene oxide amount and hydrothermal temperatures were discussed in this article. We discovered that the photocatalytic activity of Zn–doped TiO2 nanoparticles decorated on graphene is much higher than Zn-doped TiO2 nanoparticles through photocatalytic degra-dation experiments. Zn-doped TiO2 on graphene sheets sample exhibited the highest photocatalytic activity when the gra-phene oxide amount was 5%, the hydrothermal temperature was 140 °C C, the hydrothermal time was 24 hours. Graphene decorating not only narrowed the band gap also increased the optical absorption into visible region. The optimal degradation rate of TC by using the catalyst of Zn–doped TiO2 nanoparticles decorated on graphene sheets was 98.5%. And graphene oxide decorating exhibited a good effect of degradation for tetracycline under visible light..

Keywords

Zn-doped TiO2 , Graphene, Sol hydrothermal, Photocatalytic , Tetracycline degradation.

Citation

FENG JUN ZHANG, RI SHENG LI, JIA MING LI, CHENG JIA LIU, CHAO JIANG, CHUN LI KANG, Preparation of Zn doped TiO 2 nanoparticles decorated on graphene f or photocatalytic degradation of tetrac y cline, Optoelectronics and Advanced Materials - Rapid Communications, 11, 1-2, January-February 2017, pp.88-95 (2017).

Submitted at: Aug. 1, 2016

Accepted at: Feb. 10, 2017