Removal Performance and Mechanism of Benzo(b)Fluorathene Using MnO2 Nanoflower/Graphene Oxide Composites

Materials

Yan Kang¹  Siqi Lu²  Naihao Yang³  Yudong Hou⁴  Wenjun Yin⁵  Qingqing Cao⁵  Zizhang Guo⁶ 

[1] College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao 266042, China;College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China;Jinan Engineering Consulting Institute, Jinan 250014, China;Majian International Architectural Design Consulting Co., Ltd., Jinan 250014, China;School of Architecture and Urban Planning, Shandong Jianzhu University, Jinan 250014, China;Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China;

关键词: MnO₂ nanoflower;    graphene oxide;    PAHs;    adsorption;   

DOI  :  10.3390/ma14164402

来源: DOAJ

【 摘 要 】

High-ring polycyclic aromatic hydrocarbons (PAHs, Benzo[b]fluorathene (BbFA), etc.) are difficult to biodegrade in the water environment. To address this issue, an innovative method for the preparation of MnO₂ nanoflower/graphene oxide composite (MnO₂ NF/GO) was proposed for adsorption removal of BbFA. The physicochemical properties of MnO₂ NF/GO were characterized by SEM, TEM, XRD, and N₂ adsorption/desorption and XPS techniques. Results show that the MnO₂ NF/GO had well-developed specific surface area and functional groups. Batch adsorption experiment results showed that adsorption capacity for BbFA was 74.07 mg/g. The pseudo-second-order kinetic model and Freundlich isotherm model are fitted well to the adsorption data. These show electron-donor-acceptor interaction; especially π-π interaction and π complexation played vital roles in BbFA removal onto MnO₂ NF/GO. The study highlights the promising potential adsorbent for removal of PAHs.

【 授权许可】

Unknown