Pore Structure Characteristics of Foam Composite with Active Carbon

Abstract

Characterization of porous materials is essential for predicting and modeling their adsorption performance, strength, and durability. However, studies on the optimization of the pore structure to efficiently remove pollutants in the atmosphere by physical adsorption of construction materials have been insufficient. This study investigated the pore structure characteristics of foam composites. Porous foam composites were fabricated using foam composite with high porosity, open pores, and palm shell active carbon with micropores. The content was substituted 5%, 10%, 15%, and 20% by volume of cement. From the measured nitrogen adsorption isotherm, the pore structure of the foam composite was analyzed using the Brunauer–Emmett–Teller (BET) theory, Barrett–Joyner–Halenda (BJH) analysis, and Harkins-jura adsorption isotherms. From the analysis results, it was found that activated carbon increases the specific surface area and micropore volume of the foam composite. The specific surface area and micropore volume of the foam composite containing 15% activated carbon were 106.48 m2/g and 29.80 cm3/g, respectively, which were the highest values obtained in this study. A foam composite with a high micropore volume was found to be effective for the adsorption of air pollutants.

Curdlan-Based Hydrogels for Potential Application as Dressings for Promotion of Skin Wound Healing—Preliminary In Vitro Studies

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Self-Encapsulation of Biomacromolecule Drugs in Porous Microscaffolds with Aqueous Two-Phase Systems

“…Finally, nitrogen desorption experiments were carried out at the saturated temperature of liquid nitrogen. The multi-point Brunauer–Emmett–Teller (mBET) theory was used to calculate the surface area, and the average pore diameter was calculated using the Barrett–Joyner–Halenda (BJH) model [ 22 , 23 ].…”

Preparation and water collecting properties of cement-based porous condensation material

“…Its interior contains a large number of uniform and small pores [10][11][12][13][14], so it is also known as foaming cement. It is a new type of waste benefit, environmental protection, energy saving material [15], but the current application is relatively limited, mostly used in housing insulation and heat insulation [16], sound insulation [17], fire retardant [18], shock prevention and shock absorption [19], pollution absorption [20] and other fields, in the field of desertification control, is basically still in the laboratory stage. Different from thermal insulation, sound insulation and other fields of foaming cement materials need very low water absorption rate [21] (generally require water absorption rate in more than ten percent or even several percent), applied to desertification treatment of foam cement materials require higher water absorption rate [22], generally required in more than 30 %, so that it may be widely used in desertification areas with very little precipitation and sediment water content.…”