Mao Yanpeng, Yang Shanxiu, Xue Chao, Zhang Miaomiao, Wang Wenlong, Song Zhanlong, Zhao Xiqiang, Sun Jing
National Engineering Laboratory of Coal-fired Pollutants Emission Reduction, School of Energy and Power Engineering, Shandong University, Jinan 250100, People's Republic of China.
R Soc Open Sci. 2018 Jun 27;5(6):180085. doi: 10.1098/rsos.180085. eCollection 2018 Jun.
This study demonstrated rapid degradation of malachite green (MG) by a microwave (MW)-induced enhanced catalytic process with CoFeO-SiC foam. The catalyst was synthesized from CoFeO particles and SiC foam by the hydrothermal method. X-ray diffraction and scanning electron microscopy techniques were used to confirm that CoFeO particles were settled on the surface of SiC foam. In this experiment, a novel fixed-bed reactor was set up with this catalyst for a continuous flow process in a MW oven. The different parameters that affect the MW-induced degradation rate of MG were explored. The MW irradiation leads to the effective catalytic degradation of MG, achieving 95.01% degradation within 5 min at pH 8.5. At the same time, the good stability and applicability of CoFeO-SiC foam for the degradation process were also discussed, as well as the underlying mechanism. In brief, these findings make the CoFeO-SiC foam an excellent catalyst that could be used in practical rapid degradation of MG.
本研究表明，通过微波（MW）诱导的CoFeO-SiC泡沫增强催化过程，孔雀石绿（MG）可快速降解。该催化剂采用水热法由CoFeO颗粒和SiC泡沫合成。利用X射线衍射和扫描电子显微镜技术证实CoFeO颗粒沉积在SiC泡沫表面。在本实验中，使用该催化剂在微波炉中建立了一个新型固定床反应器用于连续流动过程。探讨了影响MW诱导的MG降解速率的不同参数。MW辐照导致MG的有效催化降解，在pH 8.5时5分钟内降解率达到95.01%。同时，还讨论了CoFeO-SiC泡沫在降解过程中的良好稳定性和适用性以及潜在机制。简而言之，这些发现使CoFeO-SiC泡沫成为一种可用于MG实际快速降解的优良催化剂。
