Journal of Applied Science and Engineering

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Haoming Sun1,2, Min Chen3, Xiaojing Tian This email address is being protected from spambots. You need JavaScript enabled to view it.1, Bo wang1, Yinan Tao1, Manli Lu2, Xiaona Liu2, Pinhua Zhang2, Guangliang Cui2, Lulu Du2, and Kaifeng Xue2

1School of Mechanical Engineering, Dalian Jiaotong University, Dalian, 116028, China
2School of Physics and Electrical Engineering, Linyi University, Linyi, 276000, China
3School of Electronic Information, Qingdao University, Qingdao, 266071, China


Received: July 4, 2022
Accepted: August 19, 2022
Publication Date: September 28, 2022

 Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.

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Developing a bio-sensor for rapid detection of biological hydrogen sulfide (bio-H2S) is of great significance to human health. Metal-oxide-semiconductor heterostructure based sensors have attracted extensive attention due to their large area, order structure, fast response, and high sensitivity. In this study, we prepared the Cu2O/NiO nanoarrays by the two-dimensional electrochemical in-situ assembly deposition method for bio-H2S detection. The sensors based on Cu2O/NiO nanoarrays were measured by a customized test system. The experimental results indicated that the sensor exhibited excellent sensitivity, low detection level and good selectivity to bio-H2S in the range of 1 ∼ 200 µmol/L. Moreover, we proposed that the superior performance of the nanoarrays was mainly attributed to the synergistic effects of Cu2O/NiO heterostructure as well as vulcanization reaction of Cu2O. The results demonstrate that the Cu2O/NiO nanoarrays based sensor is a potential candidate for high performance bio-H2S sensor.

Keywords: Cu2O, NiO, Nanoarrays, Bio-H2S sensor


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