Vaseline-loaded expanded graphite as a new adsorbent for toluene

Li, Shande; Tian, Shuanghong; Du, Changming; He, Chun; Cen, Chaoping

doi:10.1016/j.cej.2010.05.059

Cited by 31 publications

(9 citation statements)

References 36 publications

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“…The effect of graphene sponge sorbent could be found in our previous studies13. In other literatures regarding oil removal, many other porous materials were often pre-processed first with surface modification in order to be water resistant, which dramatically decreases the absorbance capacity of these materials to oils20. To clarify the relationship between the microstructures of sponges and their performance in water absorption, sponges fabricated at different freezing temperatures (−10, −20, −30, −40, −50, and −170°C) were selected for comparative study.…”

Section: Resultsmentioning

confidence: 85%

Large-range Control of the Microstructures and Properties of Three-dimensional Porous Graphene

Xie

Zhou

et al. 2013

Sci Rep

168

131

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Graphene-based three-dimensional porous macrostructures are believed of great importance in various applications, e.g. supercapacitors, photovoltaic cells, sensors and high-efficiency sorbents. However, to precisely control the microstructures and properties of this material to meet different application requirements in industrial practice remains challenging. We herein propose a facile and highly effective strategy for large-range tailoring the porous architecture and its properties by a modified freeze casting process. The pore sizes and wall thicknesses of the porous graphene can be gradually tuned by 80 times (from 10 to 800 μm) and 4000 times (from 20 nm to 80 μm), respectively. The property experiences the changing from hydrophilic to hydrophobic, with the Young's Modulus varying by 15 times. The fundamental principle of the porous microstructure evolution is discussed in detail. Our results demonstrate a very convenient and general protocol to finely tailor the structure and further benefit the various applications of porous graphene.

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Section: Resultsmentioning

confidence: 85%

Large-range Control of the Microstructures and Properties of Three-dimensional Porous Graphene

Xie

Zhou

et al. 2013

Sci Rep

168

131

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“…But, the particulates do not exhibit high absorption of organic solvents, the powder form makes for difficult use and the material can only be recycled a few times (only 17% capacity aer 5 cycles). [171][172][173] The development of new materials able to effectively and reversibly remove both organic solvents and oil spill contaminates is critical to the future of oil spill cleanup and water remediation required for environmental protection.…”

Section: Absorbersmentioning

confidence: 99%

A review of graphene and graphene oxide sponge: material synthesis and applications to energy and the environment

Chabot

Higgins

et al. 2014

Energy Environ. Sci.

1,046

590

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This paper gives a comprehensive review about the most recent progress in synthesis, characterization, fundamental understanding, and the performance of graphene and graphene oxide sponges. Practical applications are considered including use in composite materials, as the electrode materials for electrochemical sensors, as absorbers for both gases and liquids, and as electrode materials for devices involved in electrochemical energy storage and conversion. Several advantages of both graphene and graphene oxide sponges such as three dimensional graphene networks, high surface area, high electro/ thermo conductivities, high chemical/electrochemical stability, high flexibility and elasticity, and extremely high surface hydrophobicity are emphasized. To facilitate further research and development, the technical challenges are discussed, and several future research directions are also suggested in this paper. Broader contextAdvanced graphene materials residing at the frontier of scientic research offer immense potential for overcoming the challenges related to the performance, functionality and durability of key functional materials' in the elds of life science, energy, and the environment. Future demand necessitates advanced processing methods be developed that can mass produce high quality, two-dimensional graphene sheets while overcoming the issues of poor dispersion and restacking with large size-scale deployment of two-dimensional graphene sheets. These issues, along with graphene sheet defects and multilayer thicknesses prevent the full realization of graphene's high potential, including electronic properties and high surface area. Three-dimensional arrangements have been recently able to address these limitations, by creating sponge-like low density materials with a long list of benecial properties including: macroscale size, high accessible surface area, less restacking, highly-interconnected microstructure, high strength and exibility, fast ion transport and electron conductivity. This review is intended to address the continued developments and challenges with a wide scope of interest, highlighting fundamental understanding of the synthesis and characterization procedures, future outlook, as well as an in-depth discussion of application areas reporting high performance in recent publications. The outstanding potential of these materials has enabled signicant enhancements for numerous important applications such as electrochemical energy storage and conversion, absorption, sensing, catalysis, transistors and polymer composites.

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“…The oil adsorption capacity of EG (45 g of n-dodecane per 1 g of EG) was significantly higher than that of natural graphite. These results can be attributed to the EG having surface characteristics that consist of micropores and macropores, which induce the capillary phenomenon between the particles and pores on the surface of the EG and result in an increasing oil adsorption capacity [13,14].…”

Section: Eg Preparationmentioning

confidence: 98%

A novel drying process for oil adsorption of expanded graphite

Park¹,

Lee²,

Kim³

et al. 2013

Carbon letters

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Expanded graphite (EG) was prepared using a drying process for application as an oiladsorbent: the morphology, expansion volume, and oil absorption capacity of the EG were investigated. The expanded volume of the EG increased with an increasing reaction time and heat treatment temperature. The oil adsorption capacity of the EG was 45 g of n-dodecane per 1 g of EG. It is noted that the drying process of EG is a useful technique for a new oiladsorbent.

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Vaseline-loaded expanded graphite as a new adsorbent for toluene

Cited by 31 publications

References 36 publications

Large-range Control of the Microstructures and Properties of Three-dimensional Porous Graphene

Large-range Control of the Microstructures and Properties of Three-dimensional Porous Graphene

A review of graphene and graphene oxide sponge: material synthesis and applications to energy and the environment

A novel drying process for oil adsorption of expanded graphite

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