Mesoporous activated carbon cloth

Metivier-Pignon et al. [6] have compared initial adsorption coefficients y for 22 dyes of different molecular weights onto a raicroporous and a mesoporous activated carbon cloth. As presental in Fig. 2, for both adsorbents, initial adsorption coefficients seem to be correlated with the molecular size of the dyes. Furthermore, the mesoporous activated carbon cloth removes the larger molecules better. 

Figure 12.2. Nitrogen isotherms at 77 K, showing the development of mesopore volume in activated carbon cloth prepared by the impregnation of viscose rayon with 5% sodium dihydrogen phosphate and a mixture of chlorides (Freeman et al., 1988).

FIGURE 15.11 Selection of carbon materials used for GDI. (a) Graphene (Adapted from Li, H. B. et al., Journal of Materials Chemistry, 19, 6773, 2009.) (b) multi-walled carbon nanotubes (Adapted from Zhang, D. et al.. Materials Chemistry and Physics, 97, 415, 2006.) (c) electrospun fibers (Adapted from Wang, M. et al.. New Journal of Chemistry, 34,1843,2010.) (d) activated carbon cloth (Adapted from Oh, H. J. et al.. Thin Solid Films, 515, 220,2006.) (e) carbon aerogel (Adapted from Li, J. etaL, Joumcd of Power Sources, 158,784,2(X)6.) and(f) ordered mesoporous carbon (Adapted from Peng, Z. et al.. Journal of Physical Chemistry C, 115,17068, 2011.). 

Activated carbon cloth (ACC) is used for the removal of volatile organic compounds fix)m effluent gas streams [1], Specific micropore structures in ACCs make them real candidates for use in adsorption processes where a high rate of adsorption is accompanied with short contact time between adsorbent and adsorbate. It is very important for manufacturers to produce ACC with desirable pore size distributions, and be able to control the development of various pores from primary micropores to mesopores during activation processes. Adsorption selectivity towards various gases is another very important property, which can be achieved by introducing oxygen complexes onto the surface during activation [2-4]. 

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