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Rare Metals

, Volume 38, Issue 1, pp 73–80 | Cite as

Solvothermal synthesis of nano-CeO2 aggregates and its application as a high-efficient arsenic adsorbent

  • Jing-Hua Pang
  • Ying Liu
  • Jun Li
  • Xiao-Jiao Yang
Article
  • 33 Downloads

Abstract

Aggregates of cerium dioxide nanoparticles (nano-CeO2) were successfully prepared via a facile solvothermal process in this study. The crystallographic information and morphological information of nano-CeO2 were systematically studied by X-ray diffraction (XRD), transmission electron microscopy (TEM), laser particle size analyzer (LA) and specific surface area and pore size analyzer during the solvothermal process. Among all the obtained samples, the 18-h solvothermal-prepared nano-CeO2 aggregates show the best crystallinity and the largest specific surface area of 110.92 m2·g−1. Owing to the high activity derived from the high specific surface area of the aggregates, the application as arsenic (As) adsorption was also studied. The adsorption efficiency of arsenic by nano-CeO2 aggregates was established as the function of adsorbent dose, then pH value and at last adsorption time. The results indicate that the nano-CeO2 aggregates show a high efficiency in removing arsenic from low As concentration solution, from which the nano-CeO2 adsorbent could be easily separated. In addition, the adsorption kinetics is best fitted to pseudo-second-order model (R2 = 0.99999).

Keywords

Nano-CeO2 Large surface Aggregates Solvothermal Removal of arsenic 

Notes

Acknowledgements

This study was financially supported by the Sichuan Province Science and Technology Support Program (No. 2014GZ0090).

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Copyright information

© The Nonferrous Metals Society of China and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.College of Materials Science and EngineeringSichuan UniversityChengduChina

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