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首页> 外文期刊>RSC Advances >The facile preparation of novel magnetic zirconia composites with the aid of carboxymethyl chitosan and their efficient removal of dye
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The facile preparation of novel magnetic zirconia composites with the aid of carboxymethyl chitosan and their efficient removal of dye

机译：借助于羧甲基壳聚糖的新型磁氧化锆复合材料的舒适制备及其高效除去染料

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Novel composites based on magnetic zirconia was synthesized with the aid of carboxymethyl chitosan (Fe _(3) O _(4) /ZrO _(2) –CMCS) by a facile method. The as-synthesized products were characterized by wide-angle powder X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR). The magnetic zirconia carboxymethyl chitosan (Fe _(3) O _(4) /ZrO _(2) –CMCS) composites consisted of particles which show a better regularity and uniform with 200–300 nm in diameter. The as-obtained Fe _(3) O _(4) /ZrO _(2) –CMCS nanocomposites exhibited high adsorption activity and the adsorption capacity for sunset yellow was up to 143.2 mg g ~(?1) without adjusting pH of the solution. Interestingly, after the carboxymethyl chitosan being eliminated by calcining in air, the as-obtained Fe _(3) O _(4) /ZrO _(2) showed enhanced photocatalytic activity under sunlight irradiation. The degradation rate of rhodamine B as well as sunset yellow was 89% and 84% in 240 min, respectively, due to the addition of the Fe _(3) O _(4) /ZrO _(2) photocatalyst under sunlight irradiation. Both Fe _(3) O _(4) /ZrO _(2) –CMCS and Fe _(3) O _(4) /ZrO _(2) can be recycled and reused easily, due to magnetism of iron oxide in the composites. Considering the high adsorption performance of Fe _(3) O _(4) /ZrO _(2) –CMCS and the enhanced photocatalytic activity of Fe _(3) O _(4) /ZrO _(2) for dye stuff, these two nanocomposites can be applied in treating the waste water contaminated by organic dye stuff.
机译：基于磁性氧化锆的新型复合材料是通过羧甲基壳聚糖（Fe _（3）O _（4）/ ZrO _（2）-CMCS）合成的磁性氧化锆合成。通过广角粉末X射线衍射（XRD），扫描电子显微镜（SEM），傅里叶变换红外光谱（FTIR），表征了如合成的产品。磁性氧化锆羧甲基壳聚糖（Fe _（3）O _（4）/ ZrO _（2）-cmcs复合材料由颗粒组成，其直径为200-300nm的更好规则性和均匀。 AS获得的Fe _（3）O _（4）/ ZrO _（2）-CMCS纳米复合材料表现出高吸附活性，日落黄色的吸附能量高达143.2mg g〜（？1），而不调节pH值解决方案。有趣的是，在通过在空气中煅烧消除羧甲基壳聚糖之后，如所得的Fe _（3）O _（4）/ ZrO _（2）在阳光照射下显示出增强的光催化活性。由于在阳光照射下加入Fe _（3）O _（4）光催化剂，罗丹明B和日落黄色的降解率分别为89％和84％。 FE _（3）O _（4）/ ZRO _（2）-CMCS和FE _（3）O _（4）/ ZRO _（2）可以轻松再循环和重复使用，因为氧化铁的磁性复合材料。考虑到Fe _（3）o _（4）/ zro _（2）-cmcs和Fe _（3）o _（4）/ zro _（2）的增强的光催化活性为染料，这两个纳米复合材料可以应用于处理受有机染料的废水。

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