Design of Hollow Nanofibrous Structures using Electrospinning: An Aspect of Chemical Sensor Applications,ChemNanoMat

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Design of Hollow Nanofibrous Structures using Electrospinning: An Aspect of Chemical Sensor Applications
ChemNanoMat ( IF 2.6 ) Pub Date : 2020-05-25 , DOI: 10.1002/cnma.202000176
Hee‐Jin Cho _{1,

2} , Yoon Hwa Kim _{1,

2} , Seyeon Park _{1,

2} , Il‐Doo Kim _{1,

2}

Affiliation

Chemical gas sensors have attracted much attention with the purposes of environmental hazardous gas detection and health monitoring via exhaled breath analysis. In particular, semiconducting metal oxide (SMO)‐based chemiresistors have been considered as one of the most attractive sensing platforms owing to its simple operation, low cost, ease of miniaturization and integration to mobile devices. However, SMO‐based sensors suffer from sluggish gas reactions and poor responses. To enhance their sensing characteristics, one‐dimensional (1D) nanostructures with large surface area and high porosity are desired, since sensing reactions with analytes mainly occur at the surface of the sensing layers. In addition, uniform catalyst functionalization on SMO supports is beneficial in terms of gas response, reaction speed, and selectivity. In this review, we comprehensively highlight recent progresses on diverse hollow 1D nanofibrous structures prepared using a well‐reputed technique of electrospinning, and their unique morphological advantages as highly sensitive chemical sensing layers. Finally, future perspectives on the synthesis and sensing characterizations of hollow nanofibrous sensing materials functionalized with robust catalysts are discussed.

中文翻译：

使用静电纺丝设计中空纳米纤维结构：化学传感器应用的一个方面

化学气体传感器通过呼出呼吸分析对环境有害气体的检测和健康监测已引起了广泛的关注。特别是基于半导体金属氧化物（SMO）的化学电阻器因其操作简单，成本低廉，易于小型化以及与移动设备的集成而被认为是最具吸引力的传感平台之一。但是，基于SMO的传感器会出现气体反应缓慢和响应不良的问题。为了增强其传感特性，需要具有大表面积和高孔隙率的一维（1D）纳米结构，因为与分析物的传感反应主要发生在传感层的表面。另外，就气体响应，反应速度和选择性而言，在SMO载体上进行均匀的催化剂官能化是有益的。在这篇评论中我们全面强调了使用完善的电纺技术制备的各种中空一维纳米纤维结构的最新进展，以及它们作为高灵敏度化学传感层的独特形态优势。最后，讨论了用坚固的催化剂功能化的中空纳米纤维传感材料的合成和传感特性的未来观点。

更新日期：2020-05-25

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