Amino-functionalized synthesis of MnO2-NH2-GO for catalytic ozonation of cephalexin 机翻标题: 暂无翻译,请尝试点击翻译按钮。

来源
Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications
年/卷/期
2019 / 256 /
页码
117797-1-117797-7
ISSN号
0926-3373
作者单位
Zhejiang Univ, Coll Environm & Resource Sci, Hangzhou 310058, Zhejiang, Peoples R China;Zhejiang Univ, Coll Environm & Resource Sci, Hangzhou 310058, Zhejiang, Peoples R China;Zhejiang Univ, Coll Environm & Resource Sci, Hangzhou 310058, Zhejiang, Peoples R China;Environm Technol Innovat Ctr Jiande, Hangzhou 311600, Zhejiang, Peoples R China;Zhejiang Univ, Coll Environm & Resource Sci, Hangzhou 310058, Zhejiang, Peoples R China;Zhejiang Univ, Coll Environm & Resource Sci, Hangzhou 310058, Zhejiang, Peoples R China;
作者
Xu, Jie;Li, Yu;Qian, Mengqian;Pan, Jian;Ding, Jia;Guan, Baohong;
摘要
Catalysts such as MnO2 always play a critical role in catalytic ozonation, which is applied extensively in water treatment for disinfection, odor removal and organic pollutants degradation. To improve the performance of catalytic ozonation, we design and synthesize a catalyst of amino-functionalized hybrid of MnO2 and graphene oxide (MnO2-NH2-GO) with hydrothermal method, and then use it to catalyze the ozonation of cephalexin (CLX), one of beta-lactams antibiotics frequently detected as refractory pollutants in aquatic environment. The MnO2-NH2-GO shows much higher catalytic performance than both MnO2 and MnO2-GO in the ozonation of CLX, in which the free radicals of center dot O-2(-) play a dominated role and the mn(3+)/Mn4+ acting as active sites react with ozone to promote the formation of center dot O-2(-) with the help of the enhanced electron transfer facilitated by GO. The MnO2-NH2-GO also shows more stable catalytic performance than MnO2-GO due to the strong covalent bonds bridged by amino to MnO2 and GO to prevent the decoupling of GO from MnO2. This work provides a method to design a smart catalyst for ozonation with high catalytic performance and stability.
机翻摘要
暂无翻译结果,您可以尝试点击头部的翻译按钮。
关键词/主题词
Catalytic ozonation;Graphene oxide;Manganese dioxide;Amino-Functionalization;Cephalexin;
若您需要申请原文,请登录。

最新评论

暂无评论。

登录后可以发表评论

意见反馈
返回顶部