Preparation and adsorption performance of palm fiber-based nanoporous carbon materials with high specific surface area

2016 ◽  
Vol 23 (4) ◽  
pp. 1059-1064 ◽  
Author(s):  
Siyu Li ◽  
Yan Wang ◽  
Yuan Wei ◽  
Jing Zeng ◽  
Wenying Shi ◽  
...  
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Carbon Materials ◽  
Nanoporous Carbon ◽  
High Specific Surface Area ◽  
Palm Fiber ◽  
Adsorption Performance ◽  
Nanoporous Carbon Materials

Advances of Graphene for Adsorption of Dyes in Wastewater

2013 ◽  
Vol 804 ◽  
pp. 89-93
Author(s):  
Jing Yi Yang ◽  
Yu Qiong Chen ◽  
Ying Chuan Ma ◽  
Xin Zhang ◽  
Ling Ling Luo ◽  
...  
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Carbon Materials ◽  
High Specific Surface Area ◽  
High Thermal Stability ◽  
Charge Carriers ◽  
Functionalized Graphene ◽  
Covalently Bonded ◽  
Mobility Of Charge Carriers

Graphene is a fascinating new member of carbon materials with honeycomb and one-atom-thick structure, consisting of 2D hexagonal lattices of sp2 carbon atoms covalently bonded. Graphene has a huge theory specific surface area (over 2600 m2 g1), good thermal conductivity, high values of Youngs modulus and fracture strength, high thermal stability and chemical stability and fast mobility of charge carriers, etc.. In recent years, many researchers found graphene have outstanding adsorption capacity of dyes in aqueous solution due to its high specific surface area. This paper summarized the graphene, graphene oxide and functionalized graphene removing various dyes in wastewater.

Frontiers of carbon materials as capacitive deionization electrodes

2020 ◽  
Vol 49 (16) ◽  
pp. 5006-5014 ◽  
Author(s):  
Yuanyuan Li ◽  
Nan Chen ◽  
Zengling Li ◽  
Huibo Shao ◽  
Liangti Qu
Keyword(s):  
Carbon Nanotubes ◽  
Activated Carbon ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Carbon Materials ◽  
High Specific Surface Area ◽  
Carbon Aerogels ◽  
Capacitive Deionization

Carbon materials are widely used as capacitive deionization (CDI) electrodes due to their high specific surface area (SSA), superior conductivity, and better stability, including activated carbon, carbon aerogels, carbon nanotubes and graphene.

Experimental Studies of Carbon Electrodes With Various Surface Area for Li–O2 Batteries

2019 ◽  
Vol 16 (4) ◽  
Author(s):  
Fangzhou Wang ◽  
P. K. Kahol ◽  
Ram Gupta ◽  
Xianglin Li
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Discharge Capacity ◽  
Carbon Materials ◽  
High Specific Surface Area ◽  
Acetylene Black ◽  
Carbon Electrodes ◽  
Tea Leaves ◽  
Surface Areas

Li−O2 batteries with carbon electrodes made from three commercial carbons and carbon made from waste tea leaves are investigated in this study. The waste tea leaves are recycled from household tea leaves and activated using KOH. The carbon materials have various specific surface areas, and porous structures are characterized by the N2 adsorption/desorption. Vulcan XC 72 carbon shows a higher specific surface area (264.1 m2/g) than the acetylene black (76.5 m2/g) and Super P (60.9 m2/g). The activated tea leaves have an extremely high specific surface area of 2868.4 m2/g. First, we find that the commercial carbons achieve similar discharge capacities of ∼2.50 Ah/g at 0.5 mA/cm2. The micropores in carbon materials result in a high specific surface area but cannot help to achieve higher discharge capacity because it cannot accommodate the solid discharge product (Li2O2). Mixing the acetylene black and the Vulcan XC 72 improves the discharge capacity due to the optimized porous structure. The discharge capacity increases by 42% (from 2.73 ± 0.46 to 3.88 ± 0.22 Ah/g) at 0.5 mA/cm2 when the mass fraction of Vulcan XC 72 changes from 0 to 0.3. Second, the electrode made from activated tea leaves is demonstrated for the first time in Li−O2 batteries. Mixtures of activated tea leaves and acetylene black confirm that mixtures of carbon material with different specific surface areas can increase the discharge capacity. Moreover, carbon made from recycled tea leaves can reduce the cost of the electrode, making electrodes more economically achievable. This study practically enhances the discharge capacity of Li−O2 batteries using mixed carbons and provides a method for fabricating carbon electrodes with lower cost and better environmental friendliness.

The construction of porous chitosan microspheres with high specific surface area by using agarose as the pore-forming agent and further functionalized application in bioseparation

2019 ◽  
Vol 7 (36) ◽  
pp. 5510-5519 ◽  
Author(s):  
Liangzhi Qiao ◽  
Liangshen Zhao ◽  
Chao Liang ◽  
Kaifeng Du
Keyword(s):  
Specific Surface ◽  
Protein Adsorption ◽  
Surface Area ◽  
Specific Surface Area ◽  
Protein Separation ◽  
High Specific Surface Area ◽  
Synthetic Route ◽  
Chitosan Microspheres ◽  
Adsorption Performance ◽  
Porous Chitosan

Adsorbents with synchronously high protein adsorption performance and a facile synthetic route are highly desired in protein separation.

scholarly journals Porous Carrageenan-Derived Carbons for Efficient Ciprofloxacin Removal from Water

Nanomaterials ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 1004 ◽  
Author(s):  
João Nogueira ◽  
Maria António ◽  
Sergey Mikhalev ◽  
Sara Fateixa ◽  
Tito Trindade ◽  
...  
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Porous Carbon ◽  
Carbon Materials ◽  
Activated Carbons ◽  
Chemical Activation ◽  
High Specific Surface Area ◽  
High Porosity ◽  
Porous Carbon Materials

Porous carbon materials derived from biopolymers are attractive sorbents for the removal of emerging pollutants from water, due to their high specific surface area, high porosity, tunable surface chemistry, and reasonable cost. However, carrageenan biopolymers were scarcely investigated as a carbon source to prepare porous carbon materials. Herein, hydrochars (HCs) and porous activated carbons (ACs) derived from natural occurring polysaccharides with variable sulfate content (κ-, ι- and λ-carrageenan) were prepared and investigated in the uptake of ciprofloxacin, which is an antibiotic detected in water sources and that poses serious hazards to public health. The materials were prepared using hydrothermal carbonization and subsequent chemical activation with KOH to increase the available surface area. The activated carbons were markedly microporous, presenting high specific surface area, up to 2800 m2/g. Activated carbons derived from κ- and λ-carrageenan showed high adsorption capacity (422 and 459 mg/g, respectively) for ciprofloxacin and fast adsorption kinetics, reaching the sorption equilibrium in approximately 5 min. These features place the ACs investigated here among the best systems reported in the literature for the removal of ciprofloxacin from water.

scholarly journals Synthesis of Carbon Materials with Abnormally High Specific Surface Area

2019 ◽  
pp. 019-024
Author(s):  
A.V. Melezhik ◽  
◽  
G.V. Smolsky ◽  
A.D. Zelenin ◽  
E.A. Neskoromnaya ◽  
...  
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Carbon Materials ◽  
High Specific Surface Area
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