of metal ions. Adsorption process in graphene nanomaterials can be of two types:
(1) physical and (2) chemical. The condition on which these two processes will take
place, will depends upon the nature of interaction between adsorbate and adsorbent
(Arshad et al. 2018; Ruparelia et al. 2008). The applications of different graphene
nanomaterials is given in (Table 6.3).
Fig. 6.3 (a) Carbon nanotubes showing structure and adsorption spaces. (b) Carbon nanotubes
showing different adsorption sites on homogeneous bundle of partially opened single walled
nanotubes
6 Nanotechnology for the Remediation of Heavy Metals
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