Carbazole-Based Porous Organic Polymers with Ag(I) Doping and Derived Porous Carbon for Enhanced Adsorption of Polycyclic Aromatic Hydrocarbons

Abstract

The polycyclic aromatic hydrocarbons (PAHs) are important chemical raw materials and are abundant in fluid catalytic cracking (FCC) diesel. Adsorption is an effective method to extract PAHs from FCC diesel. Here, carbazole-based porous organic polymers were synthesized as fundamental adsorbents which contained a highly conjugated system and heteroatom (N). Ag­(I) doping and direct carbonization were used to enhance the PAHs’ adsorption capacity. The carbonized P1-C-1000 possessed a high BET surface area (1101 m2 g–1) and exhibited excellent PAH adsorption capacity (41.73 mg/g, naphthalene; 104.18 mg/g, anthracene), which was due to the high porosity, π–π conjugated interaction, and p−π conjugated interaction between N atoms and PAHs. The introduction of cation−π, π–π, and p−π interactions in porous materials provides a highly efficient approach in the removal of aromatics.

Azo-Linked Porous Polycalix[n]arenes for the Efficient Removal of Organic Micropollutants from Water

“…Porous organic polymers (POPs) belong to a type of porous materials composed entirely of organic building blocks, which are connected by covalent bonds to form networks. − Benefiting from the diversity of organic building blocks and connection methods, numerous POPs have been explored and have shown great potential in various fields, including adsorption, − sensing, , and catalysis. − Recently, macrocycle-based POPs emerged as a new generation of adsorbents for water treatment. ,− Integrating macrocycles into POP networks was considered as an effective strategy to improve binding with regard to host–guest interactions. − …”