Preparation and characterization of graphene oxide/silk fibroin hybrid aerogel for dye and heavy metal adsorption

Wang, Shu; Hu, Ning; Hu, Ning; Huang, Kaiyan; Weng, Shayuan; Wu, Xiaopeng; Wu, Liangke; Liu, Jie; Alamusi,

doi:10.1016/j.compositesb.2018.12.140

Cited by 102 publications

(38 citation statements)

References 46 publications

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“…Also, easy operation and easy regeneration of the adsorption method are significant . Various adsorbents, including Fe x Co 3− x O 4 nanoparticles, CoFe 2 O 4 /chitosan, ceramic, graphene oxide/silk fibroin hybrid aerogel, etc., have been used for removing dyes. Recently, extensive studies have been performed on mesoporous carbon materials as practical adsorbents for adsorption of dye contaminants from water because of their prominent adsorption and great capacity .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of nano‐sized magnetite mesoporous carbon for removal of Reactive Yellow dye from aqueous solutions

Toutounchi

Shariati

Mahanpoor

2019

Applied Organom Chemis

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In this study, core‐shell structures of magnetite nanoparticles coated with CMK‐8 ordered mesoporous carbon (Fe3O4@SiO2‐CMK‐8 NPs) have been successfully synthesized for the first time by carbonizing sucrose inside the pores of the Kit‐6 mesoporous silica. The nano‐sized mesoporous particles were characterized by X‐ray diffraction, Fourier transform‐infrared spectroscopy, scanning electron microscope, dynamic light scattering, vibrating‐sample magnetometer, Brunauer–Emmett–Teller (BET) and transmission electron microscopy instruments. The obtained nanocomposite was used for removal of Reactive Yellow 160 (RY 160) dye from aqueous samples. The N2 adsorption–desorption method (at 77 K) confirmed the mesoporous structure of synthesized Fe3O4@SiO2‐CMK‐8 NPs. Also, the surface area was calculated by the BET method and Langmuir plot as 276.84 m2/g and 352.32 m2/g, respectively. The surface area, volume and pore diameter of synthesized nanoparticles (NPs) were calculated from the pore size distribution curves using the Barrett–Joyner–Halenda formula (BJH). To obtain the optimum experimental variables, the effect of various experimental parameters on the dye removal efficiency was studied using Taguchi orthogonal array experimental design method. According to the experimental results, about 90.0% of RY 160 was removed from aqueous solutions at the adsorbent amount of 0.06 g, pH 3 and ionic strength = 0.05 m during 10 min. The pseudo‐second order kinetic model provided a very good fit for the RY 160 dye removal (R2 = 0.999). The Langmuir, Freundlich, Temkin and Dubinin–Radushkevich models were applied to describe the equilibrium isotherms, and the Langmuir isotherm showed the best fit to data with the maximum adsorption capacity of 62.893 mg/g. Furthermore, the Fe3O4@SiO2‐CMK‐8 NPs could be simply recovered by external magnet, and exhibited recyclability and reusability for a subsequent six runs.

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Section: Introductionmentioning

confidence: 99%

Synthesis of nano‐sized magnetite mesoporous carbon for removal of Reactive Yellow dye from aqueous solutions

Toutounchi

Shariati

Mahanpoor

2019

Applied Organom Chemis

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“…Natural graphite flakes (XF051, 100 mesh) bought from Nanjing XFNANO Materials Tech Co., Ltd., were used to prepare graphene oxide by the modified Hummers' method [32]. The epoxy adhesive used in this study was diglycidyl ether of bisphenol F. EPON862.…”

Section: Methodsmentioning

confidence: 99%

Synergistic Delamination Toughening of Glass Fiber-Aluminum Laminates by Surface Treatment and Graphene Oxide Interleaf

Liu

et al. 2020

Nanoscale Res Lett

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The synergistic effects of surface treatment and interleaf on the interlaminar mechanical properties of glass fiberaluminum laminates were studied. Aluminum sheets were treated with alkaline etching. Meanwhile, a graphene oxide (GO) interleaf was introduced between the aluminum sheet and the glass fiber-reinforced epoxy composite. Double cantilever beam and end-notched flexure tests were employed to evaluate the interlaminar fracture toughness of the glass fiber-aluminum laminates. The obtained results show that the toughening efficiency of the interleaf is dependent on the aluminum surface characteristics as well as the GO loading. Further comparison reveals that the highest mode-I and mode-II fracture toughnesses are obtained in the specimens with alkali etching treatment and addition of GO interleaf with 0.5 wt% of GO loading, which are 510% and 381% higher in comparison to the plain specimen. Fracture surfaces were observed to further uncover the reinforcement mechanisms.

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“…Given their biocompatibility and of ease of processing, both silk nanofibrils and fibers have been widely used for designing new composite membranes 31 , hydrogels 56 , and aerogels 57 for water purification. Furthermore, compared to other protein nanofibrils, silk nanofibrils possess superior mechanical properties and environmental stability, due to the high density of hydrogen bonding and the high values of crystallinity.…”

Section: Protein Nanofibrils As New Water Purification Agentsmentioning

confidence: 99%

“…Furthermore, compared to other protein nanofibrils, silk nanofibrils possess superior mechanical properties and environmental stability, due to the high density of hydrogen bonding and the high values of crystallinity. Although there are many reports on the application of silk fibers composite products for proteins 58 , nanoparticles 59 , dyes 60 and heavy metals adsorption 57 , 61 , 62 , oil–water separation 63 , and antibacterial and antifouling coatings 64 , here, we only focus on silk nanofibrils applications in water purification.…”

Section: Protein Nanofibrils As New Water Purification Agentsmentioning

confidence: 99%

Protein nanofibrils for next generation sustainable water purification

2021

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Water scarcity is rapidly spreading across the planet, threatening the population across the five continents and calling for global sustainable solutions. Water reclamation is the most ecological approach for supplying clean drinking water. However, current water purification technologies are seldom sustainable, due to high-energy consumption and negative environmental footprint. Here, we review the cutting-edge technologies based on protein nanofibrils as water purification agents and we highlight the benefits of this green, efficient and affordable solution to alleviate the global water crisis. We discuss the different protein nanofibrils agents available and analyze them in terms of performance, range of applicability and sustainability. We underline the unique opportunity of designing protein nanofibrils for efficient water purification starting from food waste, as well as cattle, agricultural or dairy industry byproducts, allowing simultaneous environmental, economic and social benefits and we present a case analysis, including a detailed life cycle assessment, to establish their sustainable footprint against other common natural-based adsorbents, anticipating a bright future for this water purification approach.

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Preparation and characterization of graphene oxide/silk fibroin hybrid aerogel for dye and heavy metal adsorption

Cited by 102 publications

References 46 publications

Synthesis of nano‐sized magnetite mesoporous carbon for removal of Reactive Yellow dye from aqueous solutions

Synthesis of nano‐sized magnetite mesoporous carbon for removal of Reactive Yellow dye from aqueous solutions

Synergistic Delamination Toughening of Glass Fiber-Aluminum Laminates by Surface Treatment and Graphene Oxide Interleaf

Protein nanofibrils for next generation sustainable water purification

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