title: A new insight to the physical interpretation of activated carbon and iron doped carbon material: sorption affinity towards organic dye.
abstract: To enhance the potential of activated carbon (AC), iron incorporation into the AC surface was examined in the present investigations. Iron doped activated carbon (FeAC) material was synthesized and characterized by using surface area analysis, energy dispersive X-ray (EDX), temperature programmed reduction (TPR) and temperature programmed desorption (TPD). The surface area of FeAC (543 m(2)/g) was found to be lower than AC (1043 m(2)/g) as a result of the pores widening due to diffusion of iron particles into the porous AC. Iron uploading on AC surface was confirmed through EDX analysis, showing up to 13.75 wt.% iron on FeAC surface. TPR and TPD profiles revealed the presence of more active sites on FeAC surface. FeAC have shown up to 98% methylene blue (MB) removal from the aqueous media. Thermodynamic parameters indicated the spontaneous and exothermic nature of the sorption processes.
authors.affiliation: School of Chemical Sciences, Universiti Sains Malaysia, 11800 Pulau Pinang, Malaysia.
authors.forename: Irfan
authors.initials: I
authors.lastname: Shah
authors.affiliation: School of Chemical Sciences, Universiti Sains Malaysia, 11800 Pulau Pinang, Malaysia. Electronic address: r_adnan@usm.my.
authors.forename: Rohana
authors.initials: R
authors.lastname: Adnan
authors.affiliation: School of Chemical Sciences, Universiti Sains Malaysia, 11800 Pulau Pinang, Malaysia.
authors.forename: Wan Saime Wan
authors.initials: WS
authors.lastname: Ngah
authors.affiliation: School of Chemical Sciences, Universiti Sains Malaysia, 11800 Pulau Pinang, Malaysia.
authors.forename: Norita
authors.initials: N
authors.lastname: Mohamed
authors.affiliation: Department of Chemistry, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia; Catalysis Science and Technology Research Centre, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
authors.forename: Yun Hin
authors.initials: YH
authors.lastname: Taufiq-Yap
mesh_terms: D000327:Adsorption; D002606:Charcoal / Q000737:chemistry*; D004396:Coloring Agents / Q000302:isolation & purification*; D007501:Iron / Q000737:chemistry*; D007700:Kinetics; D008751:Methylene Blue / Q000302:isolation & purification; D009930:Organic Chemicals / Q000302:isolation & purification*; D013696:Temperature
chemical_list: D004396:Coloring Agents; D009930:Organic Chemicals; D002606:Charcoal; D007501:Iron; D008751:Methylene Blue
keywords: Enhanced potential; Exothermic; Iron impregnation; Physisorption