Activated carbon synthesis from tangerine peel and its use in hydrogen storage

Hydrogen storage characteristics of bio‐based porous carbons of different origin: A comparative review

“…The samples were then washed with NaOH (1 M) solution for the neutralization of the excess activating agents, and HCl (0.5 M) solution for the removal of chloride ions. Afterward, they were washed with water, then dried (383 K, 1 day) (AC 0.1 M ZnCl 2 , 0.5 M ZnCl 2 , 1 M ZnCl 2 , 5 M ZnCl 2 , 0.1 M KOH, 0.5 M KOH, 1 M KOH, AC 5 M KOH) 5 …”

“…They carried out measurements under air (40 cm 3 /min), and used an empty, open crucible as a reference [16]. Doğan et al 5 carried out the characterization of the ACs (PerkinElmer Diamond DTA/TG) using nitrogen (10 K/min) up to 873 K. Schaefer et al 31 obtained the ash content by TGA according to the ASTM D2866‐11. They dried the samples first (383 K), then increased the temperature to 923 K (10 K/min) under air and kept at this temperature for 3 hours.…”

“…The PSD was determined by the application of the DFT modeling 21 . Doğan et al 5 measured N 2 adsorption isotherms of ACs at 77 K (Quantachrome Nova 2200e). Degassing treatment (523 K,24 hours) was applied before the measurements, and S BET of the degassed samples were determined 5 .…”

“…Doğan et al 5 measured N 2 adsorption isotherms of ACs at 77 K (Quantachrome Nova 2200e). Degassing treatment (523 K,24 hours) was applied before the measurements, and S BET of the degassed samples were determined 5 . Stelitano et al 8 measured N 2 adsorption (77 K) isotherms (Micromeritics ASAP‐2460) for the evaluation of the textural characterization of samples, which were exposed to thermal heating (473 K,12 hours) under vacuum prior to the adsorption measurements.…”

“…This is an active research topic in which many developments have been achieved, but further hydrogen adsorption studies should be carried out at moderate and high pressure conditions for the determination of the most efficient adsorbents 11 . Numerous studies are currently focused on investigations on the development of novel and advanced materials, as well as improving the present technologies for hydrogen storage 5,12,17,29 . Among a diverse number of sorbents being investigated in this field include carbon materials, zeolites, metal hydrides, high surface area nanomaterials like carbon nanotubes, graphene, carbon nitride (C 3 N 4 ), metal‐organic frameworks (MOFs), porous aromatic frameworks (PAF), covalent organic frameworks (COF) which are suitable mostly for the storage of hydrogen only under cryogenic conditions 4,13,14,30 …”