Zhang Huixuan, Zhang Xinyi, Guo Ruonan, Cheng Qingfeng, Cheng Xiuwen
Key Laboratory of Western China's Environmental Systems (Ministry of Education), College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, P. R. China.
College of Resources and Environment, Chengdu University of Information Technology, Chengdu 610225, P. R. China.
J Nanosci Nanotechnol. 2018 Dec 1;18(12):8252-8257. doi: 10.1166/jnn.2018.16374.
In this study, nanoscale zero-valent iron decorated graphene oxide (NZVI/GO) composite was fabricated through a reduction process in the presence of sodium borohydride (NaBH4) solution. Subsequently, physicochemical properties of the NZVI/GO composites were characterized by scanning electron microscope (SEM), transmission electron microscopy (TEM), N2 adsorption/desorption, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Fourier transformation infrared spectroscopy (FT-IR) and Raman spectra. Results indicated that Fe species existed in the form of Fe0, which uniformly dispersed on the surface of GO. Furthermore, the performance of NZVI/GO was evaluated by the degradation of tichloroacetic acid (TCAA). TCAA can be rapidly degraded by NZVI/GO. This paper provides a promising strategy to synthesize versatile catalyst which would be potentially applied in sewage treatment to degrade chlorinated organic compounds.
在本研究中，通过在硼氢化钠（NaBH₄）溶液存在下的还原过程制备了纳米零价铁修饰的氧化石墨烯（NZVI/GO）复合材料。随后，通过扫描电子显微镜（SEM）、透射电子显微镜（TEM）、N₂吸附/脱附、X射线衍射（XRD）、X射线光电子能谱（XPS）、傅里叶变换红外光谱（FT-IR）和拉曼光谱对NZVI/GO复合材料的物理化学性质进行了表征。结果表明，铁物种以Fe⁰的形式存在，均匀地分散在氧化石墨烯表面。此外，通过三氯乙酸（TCAA）的降解来评估NZVI/GO的性能。NZVI/GO能够快速降解TCAA。本文提供了一种有前景的策略来合成多功能催化剂，该催化剂有望应用于污水处理中以降解氯代有机化合物。
