BaFe2O4活性粘土纳米复合材料吸附硫化氢的制备与评价

IF 1.4 Q4 NANOSCIENCE & NANOTECHNOLOGY Journal of Nanostructures Pub Date : 2020-10-01 DOI:10.22052/JNS.2020.04.017

Shadi Sheibani, Samira Mandizadeh, Seyed Golam Abbas Mousavi, G. Mostafaii

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引用次数: 2

摘要

本研究首次采用机械合成技术成功合成了BaFe2O4–活性粘土纳米复合材料。产品的结构分析证实了纳米复合材料的纳米级形成。本研究的重点是吸附硫化氢（H2S），这是一种有毒气体，可以从污水污泥中释放出来。通过扫描电子显微镜（SEM）、能量色散X射线（EDS）分析、傅立叶变换红外光谱（FTIR）和X射线粉末衍射（XRD）验证了纳米复合材料的形成。结果表明，钡铁氧体在纳米复合材料中的不同负载量对吸附速率有重要影响。此外，通过提高BaFe2O4活性粘土的浓度，提高了对硫化氢的吸附率，统计结果证实了这一点。在300g.L-1浓度和6%负荷下，平均去除率最高，为92.79±0.90。我们可以回收BaFe2O4–活性粘土纳米复合材料3次，而不会显著降低活性。与其他纳米复合材料相比，BaFe2O4活性粘土的性能有所提高，推荐其用于吸附脱硫。

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Adsorption of hydrogen sulfide (H2S) by BaFe2O4-activated clay nanocomposite: preparation and evaluation

AbstractIn this study, BaFe2O4–activated clay nanocomposites were successfully synthesized via mechanosynthesis technique for the first time. Structural analysis of the products confirmed the nanoscale formation of nanocomposites. This study focused on adsorption of hydrogen sulfide (H2S) which is a poisonous gas and can be released from sewage sludge. Formation of nanocomposites was verified by scanning electron microscopy (SEM), energy dispersive X-ray (EDS) analysis, Fourier transform infrared (FTIR) and X-ray powder diffraction (XRD). Results showed that different loadings of barium ferrite in the nanocomposite were important for the adsorption rate. Furthermore, adsorption rate of hydrogen sulfide was improved by increasing BaFe2O4- activated clay concentration which was confirmed by statistical results. The highest average of removal efficiency was 92.79±0.90 in the concentration of 300 g.L-1and the loading of 6%. We could recycle BaFe2O4–activated clay nanocomposite 3 times without a significant decrease in activity. Enhanced performance of BaFe2O4–activated clay, compared to other nanocomposites, recommends its application for adsorptive desulfurization.

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来源期刊

Journal of Nanostructures NANOSCIENCE & NANOTECHNOLOGY-

CiteScore

2.60

自引率

0.00%

发文量

审稿时长

7 weeks

期刊介绍： Journal of Nanostructures is a medium for global academics to exchange and disseminate their knowledge as well as the latest discoveries and advances in the science and engineering of nanostructured materials. Topics covered in the journal include, but are not limited to the following: Nanosystems for solar cell, energy, catalytic and environmental applications Quantum dots, nanocrystalline materials, nanoparticles, nanocomposites Characterization of nanostructures and size dependent properties Fullerenes, carbon nanotubes and graphene Self-assembly and molecular organization Super hydrophobic surface and material Synthesis of nanostructured materials Nanobiotechnology and nanomedicine Functionalization of nanostructures Nanomagnetics Nanosensors.