Effect of additive concentration on crystalline surface of ZnO nanostructures morphology for enhanced humidity sensing

Sensors International Pub Date : 2023-01-01 DOI:10.1016/j.sintl.2022.100211

Muhammad Arif Riza , Yun Ii Go , Sulaiman Wadi Harun , Siti Barirah Ahmad Anas

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Abstract

Zinc oxide (ZnO) possesses unique nanostructures. Most ZnO nanostructures have yet seen its use as coating for fiber Bragg grating (FBG) sensors. The properties of zinc oxide nanostructure can be greatly influenced by different additives added with the precursor. This study reports on the influence of different concentration of hexamethylenetetramine (HMT) additive towards the humidity sensing capability of zinc oxide coated on FBG sensors. The synthesis of zinc oxide nanostructure was through a modified hydrothermal method. Morphology observation has confirmed a unique hybrid of nanoflake, and porous hemispherical growth of zinc oxide accompanied with elemental analysis for validation. Sensor response towards change in relative humidity is improved by 400% with functional range between 40 and 80 RH%. The concentration of HMT to achieve such performance is 0.05 M with a zinc acetate precursor. The device shows potency with its hybrid nanostructure when integrated with FBG based humidity sensor. Due to its functional range, it can detect relative humidity contents in the air for various industries. The fabricated sensing device is suited for use in industries with several magnetic equipment and requiring many sensor nodes for mapping of data.

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添加剂浓度对ZnO纳米结构结晶表面形貌的影响

氧化锌（ZnO）具有独特的纳米结构。大多数ZnO纳米结构尚未被用作光纤布拉格光栅（FBG）传感器的涂层。氧化锌纳米结构的性能会受到加入前体的不同添加剂的极大影响。本研究报告了不同浓度的六亚甲基四胺（HMT）添加剂对涂覆在FBG传感器上的氧化锌的湿度传感能力的影响。采用改进的水热法合成了氧化锌纳米结构。形态观察证实了纳米片和氧化锌的多孔半球状生长的独特混合物，并进行了元素分析以进行验证。传感器对相对湿度变化的响应提高了400%，功能范围在40和80RH%之间。实现这种性能的HMT浓度为0.05M与乙酸锌前体。当与基于FBG的湿度传感器集成时，该设备显示出其混合纳米结构的潜力。由于其功能范围，它可以检测各种行业空气中的相对湿度含量。所制造的感测装置适用于具有多个磁性设备并且需要许多传感器节点来映射数据的工业中。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Sensors International

CiteScore

17.40

自引率

0.00%

发文量