Enhanced ammonia adsorption on functionalized nanoporous carbons

A Recyclable Metal–Organic Framework as a Dual Detector and Adsorbent for Ammonia

“…[3] NH3 is an important raw material for the manufacturing of large numbers of chemicals including fertilizers, dyes, plastics, and pharmaceuticals, [4] and is considered as a potential carbon-free green fuel due to its high energy density and its lower cost of production, storage, and delivery compared to hydrogen. [5] Both the danger and usefulness of NH3 have motivated researchers to develop economical and responsive materials that can selectively detect and capture NH3; for example, NH3 sensors based on catalytic metals [6] and conducting polymers [7] have been reported, whilst porous materials such as activated carbons, [8] organic polymers, [9] covalent organic frameworks, [10] and MOFs [11] are known as efficient NH3 sorbents. MOFs are crystalline materials prepared by the selfassembly of metal ions or clusters with organic ligands to form porous extended structures.…”

Emerging Porous Materials and Their Composites for NH3 Gas Removal

“…Similarly, Foley and co‐workers reported functionalized nanoporous carbons for NH 3 capture. [ 106 ] Among the several carbons, NPC‐PEG‐AC was obtained via prolysis at 800 °C from NPC‐PEG, which was synthesized from polyethylene glycol (PEG) and polyfurfuryl alcohol (PFA). After nitric acid treatment, NPC‐PEG‐AC was modified to NPC‐PEG‐AC‐F with dense carboxylic acid groups.…”

Ammonia Capture within Isoreticular Metal-Organic Frameworks with Rod Secondary Building Units

“…Although zeolites, activated carbon, and porous organic polymers have been used as ammonia sorbents, metal-organic frameworks (MOFs) have also been widely studied as potential NH3 capture materials on account of their high porosity, tunability and structural diversity, which often showed superior performance compared to the former. [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] Specialized molecular architectures are often needed for NH3 sorbents due to its ability to interact with Lewis and Brønsted acidic sites. [21][22][23][24] Consequently, NH3 sorption is affected by the nature and amounts of the specific adsorptive site rather than total surface area of the adsorbent.…”