Hyperelastic magnetic reduced graphene oxide three-dimensional framework with superb oil and organic solvent adsorption
- PDF / 5,023,415 Bytes
- 12 Pages / 595.276 x 790.866 pts Page_size
- 105 Downloads / 211 Views
ORIGINAL RESEARCH
Hyperelastic magnetic reduced graphene oxide three-dimensional framework with superb oil and organic solvent adsorption capability Yaqing Wang 1 & Wenhao Xie 1 & Hu Liu 2 & Hongbo Gu 1 Received: 3 October 2020 / Revised: 1 November 2020 / Accepted: 14 November 2020 / Published online: 2 December 2020 # Springer Nature Switzerland AG 2020
Abstract Three-dimensional (3D) porous network materials with large pore volume, high specific surface area, and controllable porosity have potential application in wastewater treatment. This work aims to develop a novel hyperelastic and ultra-light magnetic reduced graphene oxide (rGO-Fe3O4) 3D framework with a density of 4.52 mg cm−3 through a covalent bond of aminated nanomagnetite (Fe3O4-NH2) onto graphene oxide (GO) and subsequent reduction. This 3D framework exhibited high adsorption capacities to ethyl acetate (215.8 ± 11.8 g g−1), cyclohexane (239.7 ± 9.9 g g−1), acetone (149.1 ± 6.5 g g−1), dichloromethane (308.0 ± 16.4 g g−1), and sesame oil (204.7 ± 10.2 g g−1), which were much higher than those of pure rGO aerogel (45.6 ± 2.3 g g−1 to ethyl acetate). Meanwhile, the 3D framework demonstrated superelastic mechanical properties with a 100% recoverability during the cyclic compression loading tests under an optimal fabrication condition of 1 mg mL−1 GO concentration and 3:1 mass ratio of GO to Fe3O4-NH2 nanoparticles. Most importantly, this rGO-Fe3O4 3D framework could achieve an effective oil/water separation within only 25 s and maintained an outstanding adsorption capability to ethyl acetate after 10 cycles of the adsorption/desorption process without any obvious change, depicting an excellent recyclability and reusability. This work aims to provide a promising material for environmental control and oil/organic solvent adsorption. Keywords Graphene 3D framework . Aminated nanomagnetite . Covalent bond . Oil/organic solvent adsorption
1 Introduction The frequent occurrence of oil spills in the oil exploration and transportation process [1], for example, Amoco Milford Haven oil spill [2] and Gulf of Mexico oil spill [3], has resulted in the waste of energy sources and polluted the marine ecological environment [4, 5]. Oil spill in water can seriously harm human health as well [6]. In addition to oil spills, the discharge of a large amount of industrial oily sewage and organic solvent wastewater further threatens the public health * Hongbo Gu [email protected] * Hu Liu [email protected] 1
Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai 200092, China
2
Key Laboratory of Materials Processing and Mold (Zhengzhou University), Ministry of Education, National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou, China
and terrestrial ecosystems [7]. Currently, the main methods to handle oil spill and organic solvent wastes include chemical treatment (such as surfactants), in situ combustion, and bioremediation [8–11]. These m
Data Loading...
