A bifunctional melamine sponge decorated with silver-reduced graphene oxide nanocomposite for oil-water separation and antibacterial applications

Sun, Shibin; Tang, Sikai; Chang, Xueting; Wang, Nannan; Wang, Dongsheng; Liu, Tao; Lei, Yanhua; Zhu, Yanqiu

doi:10.1016/j.apsusc.2018.12.215

Cited by 72 publications

(35 citation statements)

References 61 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The diameter of the voids ranges from 1 to 20 μm, similar to the results observed with OM, indicating that the voids are well-preserved during freeze-drying process. In addition, the volume density (ρ s ) and porosity (P s ) of the sponge were calculated via the following equations [28]:…”

Section: Molar Ratiomentioning

confidence: 99%

Emulsion-templated, polymerization-free, ultralight sponges for oil spills reclamation

Zhang¹,

Wu²,

Hu³

et al. 2019

Desalination and Water Treatment

View full text Add to dashboard Cite

a b s t r a c tWe report the fabrication of monolithic, macroporous, hydrophobic polymer sponges from a water-in-oil (w/o) high internal phase emulsion (HIPE) without using polymerization process. They were formed from sulfonated polystyrene-block-poly(ethylene-ran-butylene)-block-polystyrene (SSEBS) and tetra-functional poly(amidoamine) (PAMAM) dendrimers via ionic interaction within a W/O HIPE. The sponges obtained possessed typical emulsion-templated interconnected macroporous structures, with void size ranging from 1 to 20 μm and a density of 0.08-0.1 g mL -1 . The sponges were hydrophobic, with a water contact angle of around 128.1°, enabling highly selective absorption of oil from oil-water mixture with an absorption capacity from 15.4 to 25.8 g g -1 for organic solvents and oils. The sponges were recyclable and their absorption capacity was preserved at around 85% after being reused for 30 times. The high selectivity, absorption capacity and reusability enabled these sponges to be an excellent candidate in the reclamation of oils from wastewater and oil leakage.

show abstract

Section: Molar Ratiomentioning

confidence: 99%

Emulsion-templated, polymerization-free, ultralight sponges for oil spills reclamation

Zhang¹,

Wu²,

Hu³

et al. 2019

Desalination and Water Treatment

View full text Add to dashboard Cite

show abstract

“…2D materials such as graphene-based structures have great potential in wound care and management [39][40][41][42]. Reduced graphene oxide (rGO) is an oxidised product of graphite that affords a large specific surface area and comprises several layers (usually <8) that could potentially be used as a shielding and trapping agent to increase loading of AgNP and ensure less ready release, since the electron density of its aromatic rings is substantial enough to repel atoms and molecules trying to pass through its honeycombed ringed structure [43,44]. This is aided by the broad solution-processability of the GO precursor, with conversion to rGO requiring a high activation barrier be surmounted, which is normally achieved by chemical reduction or various heating methods [45].…”

Section: Introductionmentioning

confidence: 99%

Durable Antimicrobial Behaviour from Silver-Graphene Coated Medical Textile Composites

et al. 2019

View full text Add to dashboard Cite

Silver nanoparticle (AgNP) and AgNP/reduced graphene oxide (rGO) nanocomposite impregnated medical grade polyviscose textile pads were formed using a facile, surface-mediated wet chemical solution-dipping process, without further annealing. Surfaces were sequentially treated in situ with a sodium borohydride (NaBH4) reducing agent, prior to formation, deposition, and fixation of Ag nanostructures and/or rGO nanosheets throughout porous non-woven (i.e., randomly interwoven) fibrous scaffolds. There was no need for stabilising agent use. The surface morphology of the treated fabrics and the reaction mechanism were characterised by Fourier transform infrared (FTIR) spectra, ultraviolet-visible (UV–Vis) absorption spectra, X-ray diffraction (XRD), Raman spectroscopy, dynamic light scattering (DLS) energy-dispersive X-ray analysis (EDS), and scanning electron microscopic (SEM). XRD and EDS confirmed the presence of pure-phase metallic silver. Variation of reducing agent concentration allowed control over characteristic plasmon absorption of AgNP while SEM imaging, EDS, and DLS confirmed the presence of and dispersion of Ag particles, with smaller agglomerates existing with concurrent rGO use, which also coincided with enhanced AgNP loading. The composites demonstrated potent antimicrobial activity against the clinically relevant gram-negative Escherichia coli (a key causative bacterial agent of healthcare-associated infections; HAIs). The best antibacterial rate achieved for treated substrates was 100% with only a slight decrease (to 90.1%) after 12 equivalent laundering cycles of standard washing. Investigation of silver ion release behaviours through inductively coupled plasmon optical emission spectroscopy (ICP-OES) and laundering durability tests showed that AgNP adhesion was aided by the presence of the rGO host matrix allowing for robust immobilisation of silver nanostructures with relatively high stability, which offered a rapid, convenient, scalable route to conformal NP–decorated and nanocomposite soft matter coatings.

show abstract

“…Among them, PU sponge is regarded as a type of oil absorber material because of its three-dimensional (3D) network structure, high surface area, high mechanical strength, low density, and low price [11][12][13]. Inspired by the phenomenon of the lotus leaf, many researchers introduced substances with different properties on the skeleton of sponge to change the surface properties [14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Modification of Polyurethane Sponge Based on the Thiol–Ene Click Reaction and Its Application for Oil/Water Separation

et al. 2019

View full text Add to dashboard Cite

A polyurethane (PU) sponge with hydrophobic/oleophilic property was prepared based on the thiol-ene click reaction, which was a simple method with only one step. Photopolymerization was induced through UV light on the sponge surface in a homogeneous solution containing polyethylene glycol diacrylate, pentaerythritol (mercaptoacetic acid) ester, 2-hydroxy-4 -(2-hydroxyethoxy)-2methylpropiophenone, and octadecyl methacrylate. The as-prepared sponge possessed excellent selective for oil from various types of oil/water mixtures. It also had a high absorption capacity for toluene, >21 times its self-weight, and it had about 20 times its self-weight for vegetable oil, even after five extrusion-adsorption cycles, presenting a good recyclability. It created a new method to prepare oil/water separation sponge.

show abstract

A bifunctional melamine sponge decorated with silver-reduced graphene oxide nanocomposite for oil-water separation and antibacterial applications

Cited by 72 publications

References 61 publications

Emulsion-templated, polymerization-free, ultralight sponges for oil spills reclamation

Emulsion-templated, polymerization-free, ultralight sponges for oil spills reclamation

Durable Antimicrobial Behaviour from Silver-Graphene Coated Medical Textile Composites

Modification of Polyurethane Sponge Based on the Thiol–Ene Click Reaction and Its Application for Oil/Water Separation

Contact Info

Product

Resources

About