Lu Min, Chang Yanwei, Guan Xiao-Hui, Wang Guang-Sheng
School of Chemical Engineering, Northeast Electric Power University Jilin 132000 P. R. China.
Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University Beijing 100191 PR China
RSC Adv. 2019 Oct 21;9(58):33806-33813. doi: 10.1039/c9ra06261k. eCollection 2019 Oct 18.
A series of Co Ni FeO/multi-walled carbon nanotube (Co Ni FeO/MWCNTs) nanocomposites as photocatalysts were successfully synthesized, where Co Ni FeO was synthesized a one-step hydrothermal approach. Simultaneously, methylene blue (MB) was used as the research object to investigate the catalytic effect of the catalyst in the presence of hydrogen peroxide (HO). The results showed that all the photocatalysts exhibited enhanced catalytic activity compared to pure ferrite. In addition, compared with the other photocatalysts, the reaction time was greatly shortened a significantly higher removal rate was achieved using 3-CNF/MWCNTs. There was no significant decrease in photodegradation efficiency after three catalytic cycles, suggesting that Co Ni FeO/MWCNTs are recyclable photocatalysts for wastewater treatment. Our results indicate that the Co Ni FeO/MWCNT composite can be effectively applied for the removal of organic pollutants as a novel photocatalyst.
成功合成了一系列作为光催化剂的钴镍铁氧化物/多壁碳纳米管（Co Ni FeO/MWCNTs）纳米复合材料，其中Co Ni FeO是通过一步水热法合成的。同时，以亚甲基蓝（MB）为研究对象，研究了该催化剂在过氧化氢（HO）存在下的催化效果。结果表明，与纯铁氧体相比，所有光催化剂均表现出增强的催化活性。此外，与其他光催化剂相比，使用3-CNF/MWCNTs时反应时间大大缩短，去除率显著提高。经过三个催化循环后，光降解效率没有明显下降，这表明Co Ni FeO/MWCNTs是可用于废水处理的可回收光催化剂。我们的结果表明，Co Ni FeO/MWCNT复合材料作为一种新型光催化剂可有效应用于有机污染物的去除。
