Preparation of nitrogen-doped hierarchical porous carbon aerogels from agricultural wastes for efficient pollution adsorption

Sustainable hierarchically porous carbons from bio-oil to remove emerging contaminants

“…The synthesized HPCs showed an average pore size of 0.614 nm (by the DFT method), in ultra-micropore region, which can be advantageous in adsorptive processes for small molecules, CO 2 capture, electrochemistry (electrodes for lithiumion batteries and supercapacitors), and electrocatalysis. 40,[76][77][78][79][80][81][82][83] Applying the BJH mathematical method to HPC, the materials presented an average pore size in the range of 3.0-3.3 nm, a region of mesoporosity classified by IUPAC. 63 The presence of micropores and ultra-micropores formed by the use of zinc chloride in the materials led to a shift in the average pore size to smaller sizes due to the distribution carried out when the DFT method was applied in comparison to the BJH method applied only to the mesopore region.…”

“…7,[33][34][35][36][37][38][39] Among the diverse range of carbon-based adsorbents, hierarchically porous carbons (HPCs) derived from biomass stand out due to their economic and sustainable nature, as well as their high adsorption capacities. 40 HPCs are materials that exhibit a multimodal distribution of pore sizes with interconnected pores. 41,42 The HPCs have a great advantage compared to other adsorbent materials with unimodal pore distribution such as activated carbons and mesoporous carbons.…”

“…Among the diverse range of carbon-based adsorbents, hierarchically porous carbons (HPCs) derived from biomass stand out due to their economic and sustainable nature, as well as their high adsorption capacities. 40 HPCs are materials that exhibit a multimodal distribution of pore sizes with interconnected pores. 41,42…”

Ultrahigh and kinetic-favorable adsorption for recycling urea using corncob-derived porous biochar

“…Furthermore, CPB05 and CPB06 exhibited a type IV isotherm accompanied by a H1 type hysteresis loop, suggesting a narrower distribution of mesopores. It is known that stratified porous carbon materials with multiple pore sizes can significantly shorten the mass transfer path, increasing the mass transfer rate with a greater available surface area 41 . It is known that stratified porous carbon materials with multiple pore sizes can significantly shorten the mass transfer path, increasing the mass transfer rate with a greater available surface area The porosity characteristics of the different samples are further elucidated by the entries in Fig.…”

Adsorption behavior of chloramphenicol on an activated carbon from pomelo peel using KHCO3 activator

“…Thus, the addition of KHCO 3 and KOH could help to enlarge the micropores of PMAC. 19,35 The mechanism of KOH and KHCO 3 activation might be that they react to form K 2 CO 3 and volatile CO 2 . The K 2 CO 3 undergoes a series of decomposition reactions to produce different forms of potassium and volatile compounds like CO 2 , K 2 O, K, and CO through chemical activation, resulting in the creation of porosity.…”