Chlorine-functionalized reduced graphene oxide for methylene blue removal

Abstract

Chlorine-functionalized reduced graphene oxide was prepared by using graphene oxide and sulfuryl chloride as raw materials. It is firstly reported that the hydroxyl group in graphene oxide can be substituted by chlorine in sulfuryl chloride. The product has a wider pore size and average interlayer space, and its surface area can be easily utilized. The adsorption data indicate that the material has high adsorption capacity on methylene blue. The adsorption process follows a second-order rate and Bangham diffusion kinetic model. The adsorption of methylene blue preferably fitting the Langmuir adsorption isotherm suggests monolayer coverage of the adsorbed molecules. The adsorption capacity of the product for methylene blue is 221.4 mg g À1 at room temperature, which is significantly higher than those of reduced graphene oxide (80.0 mg g À1 ) and active carbon (46.7 mg g À1 ).

Glycine‐functionalized reduced graphene oxide for methylene blue removal

“…The ClRGO was prepared according to previous literature. [52] A mixture of ClRGO (0.20 g), glycine (2.25 g, 0.03 mol), and water (30 ml) was sonicated for 1 hr. Sodium hydroxide (1.4 g, 0.035 mol) was added gradually with stirring.…”

“…Chlorine‐functionalized reduced graphene oxide is an intermediate for graphitic materials . Some bonds in ClRGO can react with amine group of glycine, such as C–Cl, C=O, ether bond and carboxyl group.…”

“…Chlorine-functionalized reduced graphene oxide is an intermediate for graphitic materials. [52][53][54] Some bonds in ClRGO can react with amine group of glycine, such as C-Cl, C=O, ether bond and carboxyl group. Many reports were about the glycine as a functionalizer for GO and RGO, [55,56] and the properties of products were outstanding, glycine modified graphene oxide as a novel sorbent was also prepared.…”

Modification of uranium determination procedures by alpha spectrometry using graphene oxide functionalized 4-aminobenzenesulfonate

“…Through the acyl chloride formation, the displaced sulfite ion is unstable and decomposes into SO 2 and Cl − . The edges and basal planes of the graphene oxide are functionalized with hydroxyl and carboxylic which explain how thionyl chloride modification takes place [41].…”

Room-Temperature In-Situ Design and Use of Graphene Oxide-SBA-16 Composite for Water Remediation and Reusable Heterogeneous Catalysis

“…Beside this, GO shows excellent physicochemical properties when employed in composite solid materials . Graphene‐based composites have many applications in many areas like development of electronic components and capacitors, use in adsorption, and catalysis . Those studies have resulted in an avid interest in the development of 2D nanosheets such as manganese oxide, perovskites .…”