Effect of Crystallite Structure and Graphene Incorporation on Photocatalytic Performance of LaFeO3

4th International Conference on Advanced Materials Science and Technology

Afifah, N.^1,2 ; Saleh, R.^1,2

Department of Physics, Faculty of Mathematics and Sciences, Fakultas MIPA, Universitas Indonesia, Kampus UI Depok, Depok

16424, Indonesia^1

Integrated Laboratory of Energy and Environment, Fakultas MIPA, Universitas Indonesia, Kampus UI Depok, Depok

16424, Indonesia^2

关键词: Electron transport layers;    LaFeO3;    Orthorhombic structures;    Photo catalytic degradation;    Photo-catalytic;    Photocatalytic performance;    Photogenerated electrons;    Visible-light irradiation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/202/1/012063/pdf
DOI  :  10.1088/1757-899X/202/1/012063

来源: IOP

【 摘 要 】

In this study, LaFeO3photocatalysts were synthesized by using co-precipitation method at different calcination temperatures of 600 °C, 700 °C, and 800 °C. Graphene was also introduced into LaFeO3to improve the photocatalytic performance. The photocatalysts were characterized by using X-Ray Diffraction (XRD), Brunauer-Emmet-Teller (BET) surface area analysis, and Fourier Transform Infrared (FTIR) spectroscopy. The prepared photocatalysts were also evaluated to determine their photocatalytic degradation activities against methylene blue (MB) under visible light irradiation. LaFeO3with the calcination temperature of 800 °C with graphene supported showed orthorhombic structure and the highest photocatalytic performance. The different structure might affect the photocatalytic performance of samples, while the role of graphene on the nanocomposite could act as an electron transport layer and inhibited the recombination of photogenerated electron-hole pairs. The stability of the catalyst on the photocatalytic process was also studied.