Graphene oxide-Fe2O3 hybrid material as highly efficient heterogeneous catalyst for degradation of organic contaminants

作者：Guo, Sheng; Zhang, Gaoke^*; Guo, Yadan; Yu, Jimmy C.

来源：Carbon, 2013, 60: 437-444.

DOI：10.1016/j.carbon.2013.04.058

• PHOTO-FENTON DEGRADATION
• ORANGE-II
• OXIDE
• REDUCTION
• FE
• IRON
• OXIDATION
• CLAY
• MINERALIZATION
• DISCOLORATION

Graphene oxide-Fe2O3 (GO-Fe2O3) hybrid material was synthesized as a heterogeneous catalyst for photo-Fenton degradation of organic contaminants by an easy and scalable impregnation. X-ray diffraction analysis and high-resolution transmission electron microscope analysis confirm the existence of the Fe2O3 nanoparticles in the GO-Fe2O3 catalyst. Fourier transform infrared spectroscopy analysis proves that the combination of Fe2O3 and GO sheet is due to the metal-carbonyl coordination. The catalytic activities of the GO-Fe2O3 catalyst were evaluated by the degradation of Rhodamine B and 4-nitrophenol under visible light irradiation (>420 nm) in the presence of hydrogen peroxide. The results show that the catalyst exhibited excellent catalytic property at a wide pH range of 2.09-10.09 and stable catalytic activity after seven recycles, which could be attributed to the synergetic effects of the adsorptive power of GO and the hydroxyl radicals produced by heterogeneous photo-Fenton reactions. The present results suggest that the GO-Fe2O3 hybrid material can act as an efficient heterogeneous catalyst for degradation of organic contaminants, which may provide insight into the design and development of high-efficiency visible-light photocatalyst for water treatment.

• 出版日期2013-8
• 单位武汉理工大学