SYNTHESIS OF FEOOH AND FEOOH@ZNO BY HYDROTHERMAL METHOD AND THE ADSORPTION OF S2- IN WASTEWATER

IF 1 4区环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES

Journal of Environmental Engineering and Landscape Management Pub Date : 2022-01-24 DOI:10.3846/jeelm.2022.16251

Baocai Ge, Fen Li, F. Meng, Ying Yang, Cailian Yu

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引用次数: 1

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.

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FEOOH和FEOOH@ZNO水热法与废水中S2的吸附

FeOOH和FeOOH@ZnO采用水热合成方法制备了它们，并研究了它们的结构和对S2−的吸附性能。结果表明，过高的水热温度不利于S2−的吸附。然而，使用十二烷基硫酸钠（SDS）制备FeOOH并添加纳米ZnO(FeOOH@ZnO)能显著提高FeOOH对S2−的吸附，吸附去除率接近90.0%，吸附量为87.5mg·g−1。结构分析表明，SDS对FeOOH的改性和纳米ZnO的加入使FeOOH颗粒的尺寸减小，形成了内有ZnO、外有FeOOH无定形包裹体结构。的比表面积FeOOH@ZnO发现其高于FeOOH。因此，有利于S2−的吸附。XPS拟合结果表明，在S2−FeOOH@ZnO，并且认为Fe=O的氧被硫取代。

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来源期刊

Journal of Environmental Engineering and Landscape Management 环境科学-环境科学

CiteScore

1.90

自引率

7.70%

发文量

审稿时长

>12 weeks

期刊介绍： The Journal of Environmental Engineering and Landscape Management publishes original research about the environment with emphasis on sustainability.