Preparation of nanoparticulate DyMnO3 microwave-assisted method and its photocatalytic activity. (4th July 2019)

• Record Type: Journal Article
• Authors: Yang, Jiani; Xie, Xinyu; Tang, Peisong; Chen, Haifeng; Lv, Chunyan
• Is Part Of: Ferroelectrics. Volume 546(2019)
• Page Start: 231
• Page End: 238
• Publication Date: 2019-07-04
• Subjects: Photocatalytic activity -- DyMnO3 -- microwave assisted mothed -- nanoparticulate; Ferroelectricity -- Periodicals; Ferroelectric crystals -- Periodicals; 537
• DOI: 10.1080/00150193.2019.1592476
• Languages: English
• ISSNs: 0015-0193

Abstract

Abstract: In this article, using dysprosium oxide, nitric acid, citric acid and manganese acetate as the raw materials, the precursor of DyMnO3 was obtained by microwave-assisted method. And the DyMnO3 sample was prepared at 650 °C to 950 °C. DyMnO3 samples were characterized by thermogravimetric and differential scanning calorimetry (TG-DSC), X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR). The photocatalytic activity of DyMnO3 samples was studied with methyl orange solution as the simulated sewage. The results show that the pure DyMnO3 can be obtained through calcination at 750 °C, and the DyMnO3 have an average particle size of 80–100 nm. The results show that the degradation rate of methyl orange is nearly 85% and the photocatalytic activity is the best when the DyMnO3 samples are calcined at 750 °C after UV irradiation at 120 min. The purity of DyMnO3 sample is the highest when the calcination temperature is 750 °C, and its crystal shape is complete, the particle size is uniform and the dispersion is better.