Skip to content

Research at St Andrews

Experimental and theoretical investigations of Cs+ adsorption on crown ethers modified magnetic adsorbent

Research output: Contribution to journalArticle

Open Access Status

  • Embargoed (until 6/03/20)

Author(s)

Zhong Liu, Yongquan Zhou, Min Guo, Baoliang Lv, Zhijian Wu, Wuzong Zhou

School/Research organisations

Abstract

Carboxyl Fe3O4 nanoparticles (Fe3O4@R-COOH) modified with 18-Crown-6 ether functional groups have been prepared via an amidation reaction and used as bifunctional adsorbent for Cs+. The adsorbent has a superparamagnetic property, allowing an easy recycling, and a high capacity of Cs+ adsorption on the crown ether. The adsorption isotherms and kinetic behaviors agree well with the Langmuir and the pseudo-second-order models. The material exhibits a high selectivity for Cs+ in the solution with co-existing cations (NH4+, Rb+, K+, Na+ and Li+). A theoretical calculation according to density functional theory (DFT) is used to estimate the structure of Cs+ adsorption on crown ether, demonstrating an exothermic process and showing a good agreement with the experimental observations. The adsorption behavior is affected not only by the size of macrocyclic crown ethers, but also by the chelating symmetry and the binding energy. The newly developed adsorbent has a potential application for removing cesium out of wastewater and salt lakes.
Close

Details

Original languageEnglish
Pages (from-to)712-720
JournalJournal of Hazardous Materials
Volume371
Early online date6 Mar 2019
DOIs
Publication statusPublished - 5 Jun 2019

    Research areas

  • Carboxyl Fe3O4, Magnetic adsorbent, Crown ethers, Cesium, Adsorption

Discover related content
Find related publications, people, projects and more using interactive charts.

View graph of relations

Related by author

  1. Effect of oxygen coordination environment of Ca-Mn oxides on catalytic performance of Pd supported catalysts for aerobic oxidation of 5-hydroxymethyl-2-furfural

    Yang, J., Yu, H., Wang, Y., Qi, F., Liu, H., Lou, L-L., Yu, K., Zhou, W. & Liu, S., 14 Oct 2019, In : Catalysis Science & Technology. 9, 23, p. 6659-6668

    Research output: Contribution to journalArticle

  2. Asymmetric oxygen vacancies: the intrinsic redox active sites in metal oxide catalysts

    Yu, K., Lou, L-L., Liu, S. & Zhou, W., 5 Dec 2019, In : Advanced Science . Early View, 8 p., 1901970.

    Research output: Contribution to journalArticle

  3. Mechanism–property correlation in coordination polymer crystals toward design of a superior sorbent

    Li, C-P., Zhou, H., Wang, J-J., Liu, B-L., Wang, S., Yang, X., Wang, Z-L., Liu, C-S., Du, M. & Zhou, W., 13 Nov 2019, In : ACS Applied Materials & Interfaces. 11, 45, p. 42375-42384 10 p.

    Research output: Contribution to journalArticle

  4. The active oxygen species promoted catalytic oxidation of 5-hydroxymethyl-2-furfural on facet-specific Pt nanocrystals

    Liu, Y., Ma, H-Y., Lei, D., Lou, L-L., Liu, S., Zhou, W., Wang, G-C. & Yu, K., 6 Sep 2019, In : ACS Catalysis. 9, 9, p. 8306-8315

    Research output: Contribution to journalArticle

  5. Towards new thermoelectrics: tin selenide/modified graphene oxide nanocomposites

    Protsak, I., Champet, S., Chiang, C-Y., Zhou, W., Popuri, S., Bos, J-W., Misra, D., Morozov, Y. & Gregory, D., 31 Mar 2019, In : ACS Omega. 4, 3, p. 6010-6019 10 p.

    Research output: Contribution to journalArticle

Related by journal

  1. Carbon deposition and phase transformations in red mud on exposure to methane

    Sushil, S., Alabdulrahman, A. M., Balakrishnan, M., Batra, V. S., Blackley, R. A., Clapp, J., Hargreaves, J. S. J., Monaghan, A., Pulford, I. D., Rico, J. L. & Zhou, W., 15 Aug 2010, In : Journal of Hazardous Materials . 180, 1-3, p. 409-418 10 p.

    Research output: Contribution to journalArticle

  2. pH dependent separation of uranium by chelation chromatography using pyridine 2,6-dimethanol as a chelator: Single crystal X-ray structural confirmation of the chelated uranium complex

    Saha, R., Das, S., Banerjee, A., Sahana, A., Sudarsan, M., Slawin, A. M. Z., Li, Y. & Das, D., 15 Sep 2010, In : Journal of Hazardous Materials . 181, 1-3, p. 154-160 7 p.

    Research output: Contribution to journalArticle

ID: 258074552

Top