Surface Modification Effects on CNTs Adsorption of Methylene Blue and Phenol

Table 16

Previously reported adsorption capacities of various adsorbents for phenol.

Adsorbent	𝑄𝑚 (mmol/kg)	Reference
Corn grain-based activated carbons	2592.71	Park et al. [17]
Activated carbons	785.36–2530.02	Fierro et al. [18]
Physiochemical-activated coconut shell	2186.80	Mohd Din et al. [19]
Granular activated carbon	2529.91–2656.47	Hamdaoui and Naffrechoux [20]
Carbon cryogel microspheres	1312.29–2501.33	Kim et al. [21]
Acid-treated CNTs	386.78 ± 2.40–2380.19 ± 5.00	Lin and Xing [22]
Heated CNT	169.91	Diaz-Flores et al. [23]
Oxidized CNTs	436.72 ± 1.59	Shen et al. [24]
Acid-treated CNTs	168.74	Liao et al. [25]
As-synthesized CNTs	52.49–120.39	This work
Acid-treated CNT	24.76–58.55	This work
Heat-treated CNT	52.92–181.06	This work