A study on pore-opening behaviors of graphite nanofibers by a chemical activation process

Preparation of platinum-decorated porous graphite nanofibers, and their hydrogen storage behaviors

“…The normal GNFs have a lower specific surface area than that of the commercial activated carbons (ACs, 700-1500 m 2 /g), and this is one of the main reasons for their limited application. In the case of the porous GNF (PGNF in Table 1), the specific surface area is 1400 m 2 /g, and indeed, over 2000 m 2 /g of specific surface area can be achieved with well-controlled activation conditions [9,10].…”

“…In fact, carbon materials are of high technological importance due to their textural, electronic, adsorption, and molecular sieving properties. An important step in the design of a material for a particular application, especially for adsorption, is the control of the pore structure [8][9][10]. From this point of view, in our previous work [9,10] porous graphite nanofibers (GNFs) for hydrogen storage media.…”

“…An important step in the design of a material for a particular application, especially for adsorption, is the control of the pore structure [8][9][10]. From this point of view, in our previous work [9,10] porous graphite nanofibers (GNFs) for hydrogen storage media. Meanwhile, the presence of transition metals can, by a hydrogen spillover effect, increase hydrogen storage capacity.…”

A Study of the Optimum Pore Structure for Mercury Vapor Adsorption

“…The amount of nitrogen adsorbed onto the samples was used to calculate the specific surface area by means of the BET equation. 15,16 The total pore volume was estimated to be the liquid volume of nitrogen at a relative pressure of about 0.995. The micropore volume was calculated using the Dubinin-Radushkevich (D-R) equation.…”

Influence of the activating agent and the inert gas (type and flow) used in an activation process for the porosity development of carbon nanofibers

“…Expansion is the opening of pores, where increase the separation of graphene layers. Exfoliation is the coreaction of the separation of layers and the breaking of fibers, resulting in the predictable collapse of fiber shapes [30].…”