期刊
SYNTHETIC METALS
卷 246, 期 -, 页码 137-143出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.synthmet.2018.10.010
关键词
3D graphene aerogels; Sb2WO6; Electrostatic self-assembly; Hybrid photocatalyst; VIsible-light irradiation
资金
- National Natural Science Foundation of China [21477009]
- Natural Science Foundation of Jiangsu Province [BK20171194]
- Key Laboratory of Changzhou College of Information Technology [XTPY201701]
- Qing Lan Project of Jiangsu Higher Education Institutions
A novel ultraviolet (UV)- and visible-light-active 3D graphene aerogels (3DGA)/Sb2WO6 hybrid photocatalyst was prepared by electrostatic self-assembly (ESSA) method. The photocatalytic activity of the 3DGA/Sb2WO6 hybrid was studied by monitoring the change in the concentration of methyl orange (MO) under UV-light and visible-light irradiation. The results demonstrated that the as-prepared hybrid exhibited significantly enhanced efficiency for the photodegradation of MO in comparison with pure Sb2WO6. This was ascribed to the efficient separation of the photogenerated electrons (e-) and holes (h(+)) with the aid of 3DGA as well as the generated reactive superoxide radical anions (O-2(center dot-)). Moreover, the 3DGA/Sb2WO6 hybrid exhibited high recyclability, because the highly hydrophobic 3DGA in the hybrid was very advantageous to the separation of the hybrid photocatalyst from the MO solutions.
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