Porous aromatic frameworks applications

Ren H, Ben T, Sun F et al (2011) Synthesis of a porous aromatic framework for adsorbing organic pollutants application. J Mater Chem 21 10348-10353... 

Besides gas sorption and carbon capture, another important application of porous materials is the adsorption of volatile pollutants. Unlike other porous materials, such as zeolites or metal organic frameworks, PAFs are almost totally composed of hydrophobic aromatic frameworks and this makes them especially appropriate and effective for such a kind of application. As shown in Figure 8.4, ultra-high surface area PAF-1 is able to adsorb 1306 mg g (16.74 mmol g ) benzene and 1357 mg g (14.73 mmol g ) toluene at 298 K it should be noted that these values surpassed all porous materials at their time of publication. Even for PAF-5, whose surface area is 1503 m g , it can still adsorb 262.96cm (11.74mmol g ) benzene and 258.22cm g ... 

Dai et al. further demonstrated the potential application of PAFs in the electrochemical field. By the melting diffusion of sulfur into the framework of JUC-Z2, PAF-S was obtained with sulfur highly dispersed inside JUC-Z2. As a cathode material, the PAF-S composite shovt 1083 mA g reversible capacity and excellent stability in 1.0 M LiPFg-MiPS. In the ion liquid electrolyte N-methyl-N-propyl pyrrolidinium bis-(trifluoromethanesulfonyl)imide (MPPY TFSI), an 830 mA h g reversible capacity is achieved and 83% is retained after 50 cycles (Figure 8.7). The authors pointed out that once sulfur is loaded into the aromatic framework, the poor cycle stability of the sulfur electrode can be partially mitigated because of the confinement effect of the porous framework. Though the electronic conductivity of PAFs is low, this research does demonstrate the potential application of PAFs in batteries. 

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