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首页> 外文期刊>RSC Advances >Temperature dependent, shape variant synthesis of photoluminescent and biocompatible carbon nanostructures from almond husk for applications in dye removal
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Temperature dependent, shape variant synthesis of photoluminescent and biocompatible carbon nanostructures from almond husk for applications in dye removal

机译：温度依赖性，杏仁壳的光致发光和生物相容性碳纳米结构的形状变体合成，用于去除染料中的应用

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摘要

This work reports the synthesis of water soluble and photoluminescent carbon nanostructures (wsFCNS) from almond husk, a bio-waste. Effect of carbonization temperature on morphology of the synthesized carbon nanostructures is illustrated. Carbonization was carried out at three different temperatures ranging from 750 °C to 950 °C. Carbonization at higher temperature resulted in carbon nanodots having spherical morphology, while lower temperature resulted in rod shaped carbon nanostructures. Further, oxidative treatment of the as-synthesized carbon nanostructures imparts water solubility as well as photoluminescent properties over the visible to near infrared (NIR) regions of the electro-magnetic spectrum. The synthesized wsFCNS are non-toxic in nature and on direct interaction with erythrocytes, show less than 2% hemolysis. The synthesized wsFCNS were further explored for the adsorptive removal of p -nitrophenol (PNP), a model dye pollutant. The removal of PNP with wsFCNS follows pseudo first order adsorption kinetics. The proposed synthesis method could be easily scaled up for gram scale synthesis of various carbon nanostructures.
机译：该工作报告了从杏仁稻壳，生物废物的水溶性和光致发光碳纳米结构（WSFCN）的合成。碳化温度的影响对合成碳纳米结构的形态。在350℃至950℃的三种不同温度下进行碳化。在较高温度下碳化导致碳纳米蛋白具有球形形态，而较低的温度导致棒状碳纳米结构。此外，氧化处理的碳纳米结构的氧化处理赋予电磁光谱的近红外（NIR）区域的可见光和光致发光性能。合成的WSFCN在自然界中无毒，与红细胞直接相互作用，显示出小于2％的溶血。进一步探索合成的WSFCN，用于对硝基苯酚（PNP）的吸附除去，一种模型染料污染物。用WSFCNS去除PNP遵循伪第一顺序吸附动力学。所提出的合成方法可以很容易地缩放各种碳纳米结构的克革兰垢。

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