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Synthesis of FeOOH and FeOOH@ZnO by hydrothermal method and the adsorption of S2- in wastewater

    Baocai Ge Affiliation
    ; Fen Li Affiliation
    ; Fanzhu Meng Affiliation
    ; Ying Yang Affiliation
    ; Cailian Yu Affiliation

Abstract

FeOOH and FeOOH@ZnO were prepared by hydrothermal synthesis, and their structures and adsorption properties toward S2− were studied. The results showed that too high hydrothermal temperature was not conducive to the adsorption of S2−. However, using sodium dodecyl sulfate (SDS) for FeOOH preparation and adding nanometer ZnO (FeOOH@ZnO) could significantly improve the adsorption of S2− by FeOOH, and adsorption removal rate was close to 90.0% and adsorption amount was 87.5 mg·g−1. The structural analysis showed that the modification of FeOOH by SDS and the addition of nano-ZnO resulted in the reduction in size of the FeOOH particles, forming amorphous inclusion structure with ZnO present inside and FeOOH outside. The specific surface area of FeOOH@ZnO was found to be higher than that of FeOOH. Therefore, it is beneficial to the adsorption of S2−. XPS fitting results showed that ferrous deposits appeared in the process of adsorption of S2− by FeOOH@ZnO, and it was considered that the oxygen of Fe = O was replaced with sulfur.

Keyword : hydrothermal synthesis, adsorption of S2-, FeOOH, FeOOH@ZnO

How to Cite
Ge, B., Li, F., Meng, F., Yang, Y., & Yu, C. (2022). Synthesis of FeOOH and FeOOH@ZnO by hydrothermal method and the adsorption of S2- in wastewater. Journal of Environmental Engineering and Landscape Management, 30(1), 56-65. https://doi.org/10.3846/jeelm.2022.16251
Published in Issue
Jan 24, 2022
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This work is licensed under a Creative Commons Attribution 4.0 International License.

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