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

ABSTRACT: 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.

SUBMITTER: Cao Q 

PROVIDER: S-EPMC8398222 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature

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Removal Performance and Mechanism of Benzo(<i>b</i>)Fluorathene Using MnO<sub>2</sub> Nanoflower/Graphene Oxide Composites.

Cao Qingqing Q   Lu Siqi S   Yin Wenjun W   Kang Yan Y   Yang Naihao N   Hou Yudong Y   Guo Zizhang Z  

Materials (Basel, Switzerland) 20210806 16

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 MnO<sub>2</sub> nanoflower/graphene oxide composite (MnO<sub>2</sub> NF/GO) was proposed for adsorption removal of BbFA. The physicochemical properties of MnO<sub>2</sub> NF/GO were characterized by SEM, TEM, XRD, and N<sub>2</sub> adsorption/desorption and XPS techniques. Results show that the  ...[more]

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