Hybrid Monolith of Graphene/TEMPO-Oxidized Cellulose Nanofiber as Mechanically Robust, Highly Functional, and Recyclable Adsorbent of Methylene Blue Dye

Table 1

Equilibrium adsorption isotherm parameters of hybrid monolith for MB dye.

Sample (ID)	Freundlich model			Langmuir model			Temkin model
		(L mg^−1)		(mg g^−1)	(L mg^−1)			(L mg^−1)	(J mol^−1)
GO/CNF3	0.256	34.329	0.954	151.51	0.0365	0.995	26.145	0.798	96.352	0.956
GO/CNF5	0.246	53.357	0.935	204.08	0.0608	0.994	32.413	1.776	77.720	0.962
GO/CNF7	0.238	70.316	0.771	227.27	0.1302	0.998	35.614	3.568	70.734	0.869

Conditions: pH = 6.5; = 303 K; dosage = 1.11 g L⁻¹; contact time = 24 h; Co = 100–350 @ 50 mg L⁻¹.