Nano

SKKU Advanced Institute of Nano Technology (성균관대학교 성균나노과학기술원)
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Synthesis of LaMnO3-Diamond Composites and Their Photocatalytic Activity in the Degradation of Weak Acid Red C-3GN

  • Huang, Hao (State Key Laboratory of Metastable Materials Science & Technology Yanshan University) ;
  • Lu, Benqian (State Key Laboratory of Metastable Materials Science & Technology Yanshan University) ;
  • Liu, Yuanyuan (State Key Laboratory of Metastable Materials Science & Technology Yanshan University) ;
  • Wang, Xeuqian (State Key Laboratory of Metastable Materials Science & Technology Yanshan University) ;
  • Hu, Jie (State Key Laboratory of Metastable Materials Science & Technology Yanshan University)
  • Received : 2018.06.17
  • Accepted : 2018.09.14
  • Published : 2018.10.31
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Abstract

In this study, a series of $LaMnO_3$-diamond composites with varied $LaMnO_3$ mass contents supported on micro-diamond have been synthesized using a sol-gel method. The as-prepared composites were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman spectroscopy and the Fourier transform infrared spectra (FTIR). Meanwhile, the photocatalytic performances were also tested by photoluminescence (PL) spectroscopy, ultraviolet-visible diffuse reflection spectra (UV-Vis DRS) and the degradation of weak acid red C-3GN (RC-3GN). Results show that the peak position of $LaMnO_3$ is shifted to low angle after the introduction of diamond, and perovskite particles uniformly distributed on the surface of diamond, forming a network structure, which can increase the active sites and the absorption of dye molecules. When the mass ratio of $LaMnO_3$ and diamond is 1:2 (LMO-Dia-2), the composite shows the most excellent photocatalytic activity. This result offers a sample route to enlarge the range of the application of micro-diamond and provide a new carrier for perovskite photocatalysts.

Keywords

Acknowledgement

Supported by : Natural Science Foundation of Hebei Province, China Scholarship Council

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