Triazole functional groups modified attapulgite with petal-like morphology for efficient removal of strontium contaminant from aqueous solution

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Triazole functional groups modified attapulgite (ATT@TS) was synthesized via two-step nucleophilic substitution reactions for Sr(II) removal from aqueous solutions. The characterization results of ATT and ATT@TS by XRD, FTIR and TGA techniques indicated that ATT@TS with petal-like morphology was synthesized successfully. Adsorption experimental results indicated that ATT@TS markedly improved Sr(II) removal efficiency. The Sr(II) adsorption on ATT@TS followed Freundlich isotherm and kinetics adsorption data fitted pseudo-second order equation. The evaluation of thermodynamic parameters showed that Sr(II) adsorption onto ATT@TS was spontaneous and endothermic. A possible enhanced Sr(II) chemisorption mechanism of ATT@TS was explored based on adsorption experiments, physical characterization and chemical rationale.

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This research was financially supported by the PhD Fund of Southwest University of Science and Technology (No. 13zx7132).

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Correspondence to Dechun Liu.

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Liu, D., Zheng, H. Triazole functional groups modified attapulgite with petal-like morphology for efficient removal of strontium contaminant from aqueous solution. J Radioanal Nucl Chem (2020) doi:10.1007/s10967-020-07014-x

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  • Attapulgite
  • Nucleophilic substitution
  • 1 H-Benzotriazole
  • Sr(II)
  • Coordination
  • Chemisorption