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首页> 外文期刊>International Journal of Biological Macromolecules: Structure, Function and Interactions >Preparation of a regenerated silk fibroin film and its adsorbability to azo dyes
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Preparation of a regenerated silk fibroin film and its adsorbability to azo dyes

机译：制备再生丝纤维素膜及其对偶氮染料的吸附性

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摘要

In this work, a novel and sustainable biosorbent, regenerated silk fibroin film (rSFF) was successfully prepared and its adsorbability to azo dyes (acid yellow 11, naphthol orange and direct orange S) was measured. At optimal conditions, the adsorption capacity of rSFF for acid yellow 11 reached up to 59.71 mg/g, which was 1.23-fold higher than that of raw silk fibroin fibers. More importantly, rSFF exhibited a high level of flexibility and functionality as well as a good shaping ability, which were crucial for its practical application. The SEM results showed that rSFF was a porous material, indicating that it had more available adsorption sites compared with raw silk fibroin fibers, which might contribute to the higher adsorption capacity of rSFF. Isotherm equilibrium studies revealed that the azo dye adsorption process followed the Langmuir model, indicating that rSFF was a structurally homogenous adsorbent. The recycle test showed that rSFF had potential to be reused in a number of treatment cycles. After five cycles, its adsorbability to acid yellow 11 remained as high as 47.20 mg/g. Finally, a scale-up experiment was performed for rSFF, and the results indicated that it was feasible for rSFF to extend the practical application. (C) 2017 Elsevier B.V. All rights reserved.
机译：在这项工作中，成功制备了一种新颖和可持续的生物吸附剂再生丝素蛋白膜（RSFF），并测量其对偶氮染料（酸黄11，萘酚橙和直橙S）的吸附性。在最佳条件下，酸性黄色11的Rsff的吸附容量达到59.71毫克/克，比生丝纤维素纤维高1.23倍。更重要的是，RSFF呈现出高水平的灵活性和功能以及良好的成型能力，这对其实际应用至关重要。 SEM结果表明，RSFF是一种多孔材料，表明它与原始丝素蛋白纤维相比具有更具可用的吸附部位，这可能导致RSFF的较高吸附能力。等温均衡研究表明，偶氮染料吸附过程跟随朗米尔模型，表明RSFF是一种结构均匀的吸附剂。回收测试显示RSFF有可能在许多治疗循环中重复使用。在五个循环后，其对酸性黄11的吸附性保持高达47.20mg / g。最后，对RSFF进行了扩展实验，结果表明，RSFF可扩展实际应用是可行的。 （c）2017年Elsevier B.V.保留所有权利。

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