Details

Autor(en) / Beteiligte

• Wei, Xiang-Nan
• Ou, Cai-Ling
• Fang, Su-Su
• Zheng, Xiu-Cheng
• Zheng, Guang-Ping
• Guan, Xin-Xin

Titel

One-pot self-assembly of 3D CdS-graphene aerogels with superior adsorption capacity and photocatalytic activity for water purification

Ist Teil von

• Powder technology, 2019-03, Vol.345, p.213-222

Ort / Verlag

Lausanne: Elsevier B.V

Erscheinungsjahr

2019

Quelle

Elsevier ScienceDirect

Beschreibungen/Notizen

• Graphene-based three-dimensional (3D) aerogel hybrids have recently emerged as a new class of functional materials and applied in many fields. In this work, we assemble the spherical CdS nanoparticles in situ in graphene aerogel (GA) by a facile one-pot hydrothermal method. The resultant CdS-GA hybrids possess a hierarchical porous structure and there is strong electronic interaction between CdS and GA, which enhances the adsorption capacity and photocatalytic activity for the elimination of organic contaminants in water under visible light irradiation, such as rhodamine B (RhB), methylene blue (MB), acid chrome blue K (AcbK), methyl orange (MO), and ciprofloxacin (CIP). The removal efficiencies of CdS-GA for MO, MB, CIP, RhB, AcbK are 15.6, 6.6, 4.4, 2.8, and 2.2 times of pure CdS, respectively. Meanwhile, the resultant CdS-GA hybrids display good reusability. In addition, a photocatalytic mechanism is also discussed. This provides a valuable alternative to explore semiconductor-GA hybrids with outstanding adsorption capacity and superior visible-light induced photocatalytic activity. [Display omitted] •3D CdS-GA hybrids are facilely assembled with a one-pot hydrothermal method.•The hybrids exhibit superior adsorptivity for various organic contaminants.•They exhibit satisfactory activity in visible light irradiated photocatalysis.•A visible-light photocatalytic mechanism for the hybrids is proposed.