Fabrication of 3D CeVO₄/graphene aerogels with efficient visible-light photocatalytic activity

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• 作者：Chunya Fan ; Qinqin Liu ; ^{liu_qin_qin@126.com" class="auth_mail" title="E-mail the corresponding author} ; Tiandong Ma ; Jiyou Shen ; Yang Yang ; Hua Tang ; Yaping Wang ; Juan Yang
• 关键词：CeVO4 ; Graphene ; Aerogel ; Photocatalytic activity
• 刊名：Ceramics International
• 出版年：2016
• 出版时间：June 2016
• 年：2016
• 卷：42
• 期：8
• 页码：10487-10492
• 全文大小：2281 K

文摘

Hybrid 3-dimensional (3D) structures that were composed of CeVO₄ particles and graphene aerogels were fabricated by the electrostatic-driven self-assembly method. The as-prepared products were characterized by X-ray diffraction, Raman spectra, field-emission scanning electron microscope and UV–vis diffuse reflectance spectroscopy. The results showed that graphene nanosheets loading with CeVO₄ particles self-assembled into a well-defined and interconnected 3D porous network through strong van der Waals and π–π interactions. Benefited from the incorporation of CeVO₄ particles into graphene nanosheets in such a unique structure, hybrid aerogels exhibited higher photodegradation efficiency toward methylene blue (MB) than that over pure CeVO₄ photocatalyst. It is proposed that the efficient physical adsorption of dye molecules and enhanced charge transfer in the composite is account for the improved photocatalytic activity. These findings open a new pathway for the design and fabrication of such functional graphene-based aerogels in water purification and advanced treatment.