Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Linggong Road, #2, Dalian 116024, China.
Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Linggong Road, #2, Dalian 116024, China.
J Colloid Interface Sci. 2016 Oct 1;479:89-97. doi: 10.1016/j.jcis.2016.06.053. Epub 2016 Jun 22.
Short chain chlorinated paraffins have recently attracted great attention because of their environmental persistence and biological toxicity as an important organic pollutant. In this work, reduced graphene oxide/CoFe2O4/Ag (RGO/CoFe2O4/Ag) nanocomposite was prepared and employed for photocatalytic degradation of short chain chlorinated paraffins. The process of photocatalytic degradation of short chain chlorinated paraffins over RGO/CoFe2O4/Ag under visible light (λ>400nm) was investigated by in situ Fourier transform infrared spectroscopy and the related mechanisms were proposed. An apparent degradation ratio of 91.9% over RGO/CoFe2O4/Ag could be obtained under visible light illumination of 12h, while only about 21.7% was obtained with commercial P25 TiO2 under the same experimental conditions, which demonstrates that the RGO/CoFe2O4/Ag nanocomposite is a potential candidate for effective photocatalytic removal of short chain chlorinated paraffins.
短链氯化石蜡因其环境持久性和生物毒性而作为一种重要的有机污染物，最近引起了极大的关注。在这项工作中，制备了还原氧化石墨烯/CoFe2O4/Ag（RGO/CoFe2O4/Ag）纳米复合材料，并将其用于短链氯化石蜡的光催化降解。通过原位傅里叶变换红外光谱研究了在可见光（λ>400nm）照射下 RGO/CoFe2O4/Ag 上短链氯化石蜡的光催化降解过程，并提出了相关机制。在可见光照射 12 小时的条件下，RGO/CoFe2O4/Ag 可获得 91.9%的明显降解率，而在相同实验条件下，商用 P25 TiO2 仅获得约 21.7%的降解率，这表明 RGO/CoFe2O4/Ag 纳米复合材料是有效去除短链氯化石蜡的潜在候选材料。
