Enhanced stability and photocatalytic performance of transition metal-doped ZnO with magnetite nanoparticle and zeolite

International Symposium on Current Progress in Functional Materials

Pratiwi, M.I.^1,2 ; Afifah, N.^1,2 ; Saleh, R.^1,2

Department of Physics, Faculty of Mathematics, Natural Sciences Universitas Indonesia, Kampus UI Depok, Depok

16424, Indonesia^1

Integrated Laboratory of Energy and Environment, Faculty of Mathematics, Natural Sciences Universitas Indonesia, Kampus UI Depok, Depok

16424, Indonesia^2

关键词: Diffuse reflectance spectroscopy;    Electron-hole recombination;    Fe-doped;    Natural zeolites;    Photo-catalytic;    Photocatalytic performance;    Photodegradation of methylene blue;    Vibrating sample magnetometer;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/188/1/012012/pdf
DOI  :  10.1088/1757-899X/188/1/012012

来源: IOP

【 摘 要 】

The combination of zeolite and transition metal-doped ZnO nanoparticles for improved electron and hole photogeneration and inhibited electron-hole recombination, due to the trapping states, has been studied in our previous work. However, the photocatalyst has not been separated and reused after successfully degrading the organic dye. Therefore, in this study, we incorporated four different variations of magnetite nanoparticles into zeolite-supported Fe-doped ZnO, using the co-precipitation method. The samples were characterized with the aid of various measurements, such as x-ray diffraction, infrared absorption, diffuse reflectance spectroscopy, vibrating sample magnetometer (VSM), and Burneur-Emment-Teller (BET). The photocatalytic activity of nanocomposites was examined by photodegradation of methylene blue under UV light irradiation. The results show that the presence of a certain amount of magnetite nanoparticles in a zeolite-supported Fe-doped ZnO nanocomposite improved its efficiency in degrading methylene blue. The role of charged carriers and the active radical involved in the photocatalytic activity is discussed.