Micro-Fabricated Pre-Concentrator Filled with Single-Walled Carbon Nanotubes as Adsorbent Material
Micro-Fabricated Pre-Concentrator Filled with Single-Walled Carbon Nanotubes as Adsorbent Material
复制标题
填充单壁碳纳米管作为吸附材料的微加工预浓缩器
DOI：
10.4028/www.scientific.net/kem.645-646.681
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
J. Liu
中科院分区：
文献类型：
--
作者：
Xiao Zhu;Z. Ning;Jianhai Sun;T. Ma;Yan Zhang;J. Liu
由于环境气体中各组分的浓度很低，现有的分析仪器灵敏度不够，因此研制出能有效富集各组分的微型预浓缩器是非常重要和必要的。因此，在这项工作中，微型预浓缩器的浓缩痕量气体。以单壁碳纳米管（SWCNTs）为吸附材料，研制了一种具有4个平行通道的微型预浓缩器，用于挥发性有机物（VOCs）的浓缩。这一选择是基于以下考虑：4个平行通道确保预浓缩器可以填充足够量的吸附剂材料。此外，单壁碳纳米管由于其化学和热稳定性、高的表面积与体积比以及对非极性化合物的大亲和力而充当吸附材料。实验结果表明，该微型预浓缩器能有效地浓缩苯，浓缩倍数可达15倍，同时色谱峰的展宽也得到了很大的压缩。
As concentration of components in environmental gas is very low, and the available analytical instruments are not sufficiently sensitive, so that micro pre-concentrators developed for effectively concentrating components are very important and necessary. Therefore, in this work a micro pre-concentrator was fabricated for concentrating trace gas. The micro pre-concentrator with 4 parallel channels filled with Single-Walled Carbon Nanotubes (SWCNTs) as adsorbent materials was developed for concentrating volatile organic compounds (VOCs). This choice was done on the basis of the consideration: 4 parallel channels ensure that the pre-concentrator can be filled with a sufficient amount of adsorbent materials. Moreover, SWCNTs was acted as adsorbent material owing to their chemical and thermal stability, a high surface-to-volume ratio, and a large affinity to the non-polar compounds. The experimental results show that the micro pre-concentrator effectively concentrated benzene with a concentration factor of 15 and the chromatography peak broadening was also greatly compressed.
影响因子：
9.6
作者：
Phillips, M;Cataneo, RN;Rom, WN
通讯作者：
Rom, WN