Zinculose: A new fibrous material with embedded zinc particles
Zinculose: A new fibrous material with embedded zinc particles
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DOI：
10.1016/j.jestch.2020.09.005
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发表时间：
2021-03-03
影响因子：
5.7
通讯作者：
Faghri, Mohammad
中科院分区：
文献类型：
--
作者：
Charbaji, Amer;Smith, Winfield;Faghri, Mohammad
在本文中，我们报道了一种简单而廉价的方法来制备纤维素纤维和嵌入锌微粒的复合材料。这种纤维状物质是通过沉淀产生的，被称为“锌糖”。Zinculose增加了样品流体和锌微粒之间的表面接触面积。研究了纤维含量、锌含量、加水量、施加量和作用时间等工艺参数对所制得的锌粉厚度的影响。结果表明，厚度取决于初始纤维和锌的含量，而其他参数对厚度的影响很小或没有影响。Zinculose的测量孔隙度值在0.699到0.843之间。Zinculose中的流动特性显示出距离与时间的平方根之间的线性关系，这是多孔介质中毛细管驱动流动的一个显著特征。这一重要特性使Zinculose能够轻松并入任何需要样品流动并与锌微粒相互作用的纸基微流控设备中，而不会中断设备不同部分之间的流动路径。介绍了一种用一条锌糖将硝酸盐转化为亚硝酸盐的应用。在纸基微流控装置中使用Zinculose，硝酸盐转化为亚硝酸盐的效率达到27%。这比之前发表的当锌微粒没有嵌入到纸通道的纤维中时提高了36%。(C)2020年卡拉布克大学。Elsevier B.V.出版服务。
In this paper, we report a simple and inexpensive procedure to make a composite material of cellulose fibers with embedded zinc micoparticles. This fibrous material is produced by sedimentation and is referred to as "Zinculose". Zinculose increases the surface contact area between a sample fluid and zinc microparticles. The effect of different parameters including fiber content, zinc content, water volume, applied weight and its duration on the thickness of produced Zinculose were investigated. Results show that thickness depends on the amount of initial fiber and zinc while other parameters investigated had little to no effect. Measured porosity values for Zinculose ranged between 0.699 and 0.843. Characterization of flow in Zinculose exhibits a linear relationship between distance and the square root of time which is a distinctive feature of capillary driven flow in porous media. This is an important quality that allows Zinculose to be easily incorporated into any paper-based microfluidic device that requires a sample to flow and interact with zinc microparticles without disrupting the flow path between different sections of the device. An application is presented in which a strip of Zinculose is used to convert nitrate to nitrite. With the use of Zinculose in a paper-based microfluidic device, a conversion efficiency of 27% nitrate to nitrite was achieved. This represents a 36% enhancement over what has been previously published when zinc microparticles were not embedded within the fibers of the paper channel. (C) 2020 Karabuk University. Publishing services by Elsevier B.V.