Adsorption Performance for Reactive Blue 221 Dye of β-Chitosan/Polyamine Functionalized Graphene Oxide Hybrid Adsorbent with High Acid–Alkali Resistance Stability in Different Acid–Alkaline Environments

Abstract

A hybrid material obtained by blending β-chitosan (CS) with triethylenetetramine-functionalized graphene oxide (TFGO) (CSGO), was used as an adsorbent for a reactive dye (C.I. Reactive Blue 221 Dye, RB221), and the adsorption and removal performances of unmodified CS and mix-modified CSGO were investigated and compared systematically at different pH values (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, and 12). The adsorption capacities of CS and CSGO were 45.5 and 56.1 mg/g, respectively, at a pH of 2 and 5.4 and 37.2 mg/g, respectively, at a pH of 12. This indicates that TFGO was successfully introduced into CSGO, enabling π–π interactions and electrostatic attraction with the dye molecules. Additionally, benzene ring-shaped GO exhibited a high surface chemical stability, which was conducive to maintaining the stability of the acid and alkali resistance of the CSGO adsorbent. The RB221 adsorption performance of CS and CSGO at acidic condition (pH 3) and alkaline condition (pH 12) and different temperatures was investigated by calculating the adsorption kinetics and isotherms of adsorbents. Overall, the adsorption efficiency of CSGO was superior to that of CS; thus, CSGO is promising for the treatment of dye effluents in a wide pH range.

Natural Polysaccharide Based Graphene Oxide Nanocomposites for Removal of Dyes from Wastewater: A Review

“…Chang et al (2020) adopted the semidissolution/acidification/sol–gel transition (SD-A-SGT) method to prepare the chitosan/polyacrylate/graphene oxide (CTS/PAA/GO) composite which is observed to show improved mechanical and adsorption properties. Very recently, a β-chitosan/triethylenetetramine functionalized graphene oxide (CS/TFGO) hybrid has been reported wherein the solid–liquid separation problem after adsorption was solved following a procedure as described by Ren et al. (2016) .…”

“…173 Chang et al (2020) adopted the semidissolution/acidification/sol−gel transition (SD-A-SGT) method 174 to prepare the chitosan/polyacrylate/graphene oxide (CTS/PAA/GO) composite which is observed to show improved mechanical and adsorption properties. Very recently, a β-chitosan/ triethylenetetramine functionalized graphene oxide (CS/ TFGO) hybrid 175 has been reported wherein the solid−liquid separation problem after adsorption was solved following a procedure as described by Ren et al (2016). 176 Among recent developments, mention can also be made of a covalently bonded metal organic framework (Cu 3 (btc) 2 ) on a graphene oxide−chitosan composite, 177 magnetic chitosan/quaternary ammonium salt GO, 178 and magnetite-polypyrene/chitosan/ graphene oxide (M-PPy/CS/GO).…”

A Thorough Examination of the Solution Conditions and the Use of Carbon Nanoparticles Made from Commercial Mesquite Charcoal as a Successful Sorbent for Water Remediation

“…In addition, their low-cost and excellent adsorbing properties made CMs allotropes excellent as potential water treatment substrates [28]. In contrast to metal oxides and clay, CMs are resistible to acidic and basic mediums [29]. In addition, they can be manufactured from various agricultural and industrial wastes, the disposal of which in this way is considered a solution to an environmental problem [30,31].…”

Immobilization of Air-Stable Copper Nanoparticles on Graphene Oxide Flexible Hybrid Films for Smart Clothes

“…The hybrid material prepared with SDS as the protective agent exhibited the best electrochemical activity [36]. Amorphous carbon and graphene-based materials have also been used in many studies to reduce the agglomeration of CuNPs [37,38]. Yang et al examined the use of CuNP/graphene oxide (GO)/single-walled carbon nanotube (SWCNT) hybrid material as an electrochemical-sensing platform for nonenzymatic glucose detection.…”