Fabrication of hybrid magnetic Sr 5x Ba 3x (PO 4 ) 3 (OH)/Fe 3 O 4 nanorod and its highly efficient adsorption performance for acid fuchsin dye

Xiaoju Yin, Fan Zhang, Weihua Zhang

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17 Scopus citations

Abstract

The hybrid magnetic Sr 5x Ba 3x (PO 4 ) 3 (OH)/Fe 3 O 4 (SBPF) nanorod was prepared and characterized using different techniques, such as SEM, EDS, TEM, SAED, HRTEM, XRD, and FT-IR. Adsorption studies of acid fuchsin (AF) from aqueous solution with respect to the pH, temperature, time, initial dye concentration, and sorbent dosage were investigated. The Freundlich adsorption model was applied to describe the equilibrium isotherms. The maximal AF uptake by SBPF was 1590 mg/g in the test. Kinetics parameters of the adsorption process indicated that it followed the pseudo-second order equation, and the maximum sorption capacity calculated from the pseudo-second-order rate equation was 909 mg/g which was close to the experimental value. Adsorption thermodynamics study indicated the spontaneous nature and exothermic of the adsorption process. The removal of AF was attributed to the hydrogen bond and ionic interactions. Moreover, SBPF was easily recovered, and the adsorption capacity was approximately 97.7% of the initial saturation adsorption capacity after being used five times.

Original languageEnglish (US)
Pages (from-to)714-722
Number of pages9
JournalApplied Surface Science
Volume359
DOIs
StatePublished - Dec 30 2015

Bibliographical note

Funding Information:
This work was financially supported by the National Natural Science Funds of China (Grant No. 51402153 ) and the Fundamental Research Funds for the Central Universities (Grant No. KJQN201553) .

Publisher Copyright:
© 2015 Elsevier B.V. All rights reserved.

Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.

Keywords

  • Acid fuchsin
  • Adsorption
  • Magnetic nanorod
  • Mechanism

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