Flowing electrolytic synthesis of fluorescent carbon nanoparticles and carbon nanosheets

Shen, Yao; Hu, Yufei; Li, Gongke

doi:10.1016/j.electacta.2014.12.151

Cited by 4 publications

(2 citation statements)

References 39 publications

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“…Carbon materials including graphene oxide (GO), carbon nanotubes (CNTs), biochar, and activated carbon (AC) are the most popular and extensively applied adsorbents for wastewater treatment. Tremendous progress has been made to produce leading edge carbon materials through various approaches in the past few years, such as chemical vapor deposition, template-assisted carbonization, pyrolysis, solvothermal reduction, and so on, in which fossil fuels, natural resources, or chemicals are usually used as raw materials. Recently, a novel kind of carbon material, electrolytic carbon (EC), has successfully been synthesized from waste gas via a molten salt CO 2 capture and electrochemical transformation technology (MSCC-ET) .…”

Section: Introductionmentioning

confidence: 99%

Green Carbon Material for Organic Contaminants Adsorption

2020

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Eco-friendly and economical adsorbents are desirable for removing organic pollutants from the environment. Herein, a kind of green carbon material, electrolytic carbon (EC) prepared by the electrochemical conversion of greenhouse gas (CO 2 ) in molten carbonate, is verified as an effective adsorbent for aniline and other small aromatic organic molecules. The EC consists of nanoparticles and nanoflakes, featuring the specific surface area of ∼641 m 2 /g with an enriched micropore structure. It exhibits a large adsorption capacity (Q max > 114.1 mg/g) for aniline, especially in water with a lower contamination level. The adsorption conforms to the pseudo-second-order equation kinetically and the Freundlich model thermodynamically in the temperature range of 303−323 K. Moreover, it is found that the adsorption performance of the material can be further improved through reducing surface oxygen functional groups by a simple thermotreatment. Its adsorption capacity for aniline is enhanced by 1.7 times, demonstrating that the π−π dispersive interaction plays a primary role for the efficient adsorption. This adsorption mechanism is further confirmed by the excellent adsorption performance of the carbon materials for other analogue aromatic compounds (phenol, nitrobenzene). The super performance of the CO 2 -derived carbon adsorbents will be helpful for capturing CO 2 as well as for removing organic pollutants.

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Section: Introductionmentioning

confidence: 99%

Green Carbon Material for Organic Contaminants Adsorption

2020

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“…While electrolytes are necessary for providing the conductivity to electrochemical systems, they are known to be contaminants in downstream processing. 1 Product separation from the electrolyte, and downstream electrolyte recycling is a challenge which must be addressed in order to promote the wide scale use of electrochemical processes 2 as alternatives to traditional chemical processes used today. In organic systems, electrolytes are often limited by poor solubility, thereby limiting the conductivity of the system.…”

mentioning

confidence: 99%

Ionicity Analysis of Silylamine-Type Reversible Ionic Liquids as a Model Switchable Electrolyte

Jiménez

Jung

Biddinger

2015

J. Electrochem. Soc.

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Separation of the electrochemical product from an electrolyte can add challenges to the overall process. Use of a switchable electrolyte offers the possibility to reduce or eliminate these separation challenges while maintaining high conductivity. Reversible ionic liquids (RevILs) are a type of switchable solvent that could be used as a switchable electrolyte. Switchable solvents are solvents that can have dramatic step-changes in their properties with the introduction of an external stimulus, in this case CO 2 . In order to determine the feasibility of using TEtoxySA-RevIL, which behaves similarly to protic ionic liquids, as an electrolyte an ionicity analysis utilizing binary mixtures of the RevIL and organic solvents were studied to determine the ionic behavior of the system. Both protic and aprotic solvents with a broad range of dielectric constants were used in order to elucidate the ionicity of the RevIL mixtures. When in the pure RevIL state, the conductivity is prohibitively low due to a heightened viscosity and poor ion mobility due to hydrogen bonding and coulometric attraction. We found that in the presence of protic solvents with high dielectric constants the conductivity of the RevIL increased by up to four orders of magnitude and achieved ideal ionicity.

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