Insight to sorption mechanism employing nanocomposite: Case study of toxic species removal

作者: Jayshree Ramkumar , Jerina Majeed , S Chandramouleeswaran , None

DOI: 10.1016/J.MICROMESO.2020.110858

关键词: Zeta potentialMetal ions in aqueous solutionIron oxideSorbentSorptionSurface chargeChemistryAqueous solutionChemical engineeringNanocomposite

摘要: Abstract Iron oxide-silica nanocomposite synthesized by one-pot co-precipitation method was evaluated for its applicability as sorbents removal of toxic species like inorganic metal ions (UO22+, Zn2+, Cu2+, Ni2+, Co2+) and cationic dyes (MB R6G) from aqueous streams at room temperature. The detailed structural analysis revealed the formation crystalline iron oxide core with amorphous silica shell. zeta potential measurements surface charge helped in assessing sorbents. magnetic property sorbent, easy separation solution using external field. high porosity large area sorbent contributed to excellent sorption efficiency. efficiency nano-composites analyzed respect kinetics (rate order), initial concentration (equilibrium conditions) weight sorbent. optimum pH uptake range 5–6. Extensive modelling data getting an insight mechanism ion sorption. selectivity towards MB (MB) opposed that Rhodamine 6G (R6G) quite intriguing studies were carried out understand this. Since bare nanosorbent showed no ions, modification enhance uranyl ion.

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