The preparation of superhydrophobic graphene/melamine composite sponge applied in treatment of oil pollution

Abstract

A facile chemical route to synthesize the graphene/melamine composite sponge with super oil adsorption capacity was reported. The effect of the graphene loading on the microstructures and adsorption property of the composite sponge was studied in detail. The adsorption capacity of diesel oil in composite sponge could reach 99.0 g/g. The oil adsorbed in composite sponge could be desorption in ethanol at 50°C. Furthermore, the composite sponge exhibited excellent mechanical and environmental stability. The facile production, high stability, high adsorption capacity and recycling makes this material practically useful for the treatment of oil pollution in future.

Superhydrophobic hBN-Regulated Sponges with Excellent Absorbency Fabricated Using a Green and Facile Method

“…Absorption capacity is obviously higher than many recent reported sorbents (Table 1), such as nitrogen-rich carbon aerogel10, CNT/PDMS coated PU sponge27, highly hydrophobic, fire-resistant (UHF) sponge30, cellulose nanofibril aerogels45 and micro-wrinkled reduced GO46. The capacity of hBN coated sponge is also higher than that of melamine sponge coated with exfoliated graphene (165 g.g −1 , or 153 g.g −1 )1523, reduced graphene (99 g.g −1 )24 and MoS 2 (159 g.g −1 )26. And the value is comparable to the state-of-the-art new sorbents with high absorption capacity, for example, twisted carbon fibers (TCF) aerogel47, carbon microbelts aerogel48, thiourea reduced graphene sponge49, CVD-produced CNT sponge11, CNT-graphene hybrid aerogel50.…”

“…altered the size distribution of graphene sheets using a grinding method in isopropyl alcohol and SDS, the fabricated graphene-coated melamine sponge delivered an absorption capacity of 153 g.g −1 for chloroform15. Graphene oxide (GO) was also introduced to modified melamine sponges followed by hydrothermal or chemical reduction to remove the oxygen-containing groups of GO2425. The reduced GO-coated sponge exhibited adsorption capacity of 99 g.g −1 for diesel oil24.…”

“…Graphene oxide (GO) was also introduced to modified melamine sponges followed by hydrothermal or chemical reduction to remove the oxygen-containing groups of GO2425. The reduced GO-coated sponge exhibited adsorption capacity of 99 g.g −1 for diesel oil24. Another 2D material, MoS 2 , was used to decorate melamine sponges.…”

Superhydrophobic graphene-based materials with self-cleaning and anticorrosion performance: An appraisal of neoteric advancement and future perspectives

“…Liu et al [ 117 ] fabricated multifunctional mesh films containing GO–SiO 2 nanohybrids with underwater oleophobicity and antibacterial property which could be employed for effective oil water separation. Synthesis of graphene/melamine composite sponge with enhanced diesel absorption [99.0 g/g] was carried out by Liu et al [ 118 ] It was also found that the sponge had excellent mechanical and environmental stability. Similar works on graphene sponge was carried out by Zhao et al [ 119 ].…”

Compressible and Recyclable Monolithic g-C3N4/Melamine Sponge: A Facile Ultrasonic-Coating Approach and Enhanced Visible-Light Photocatalytic Activity

“…Based on the above considerations, the proper support remains an obstacle for the practical application of monolithic photocatalyst. Lately, melamine sponge (MS), a cheap commercial polymer foam which is widely used as kitchen and construction materials, is successfully used for oil-water separation by integrating with graphene (Liu T. T. et al, 2015 ; Zhao et al, 2016 ). The fabricated graphene/MS exhibits low-density, high porosity and high elasticity inherited from MS, which exactly match the support characteristics of the monolithic photocatalyst.…”