Scholarlink

<p>In this work, three different chemiresistive sensing elements of heterostructured ZnO/CuO composites were deposited through spray pyrolysis method by varying the deposition cycles: 50, 150 and 250 designated as S1, S2 and S3 respectively. The physical and chemical characteristics of prepared samples were investigated by using X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), Hall-effect, and Brunauer-Emmett-Teller (BET) analysis. The optimal temperature condition for vapour sensing of S1, S2 and S3 samples was examined for acetone, formaldehyde, acetaldehyde and butanol. The S1, S2 and S3 sample showed better response towards acetone at 350 ˚C than other vapours. Among three samples, S3 showed significant response toward acetone at 350 ˚C. The S3 sample also showed good response and recovery time of 42&#xa0;s and 28&#xa0;s respectively which is essential for disease diagnosis. In addition, the acetone sensing mechanism of the ZnO/CuO heterostructure was discussed.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Spray Pyrolyzed ZnO/CuO Heterostructure for Chemiresistive Acetone Sensing

  • 期刊论文

  • 发表日期：

    2025年9月19日

查看全文
  • G. Mahesh Kumar,
  • S. Shai Ruvetha,
  • B. G. Jeyaprakash

摘要

In this work, three different chemiresistive sensing elements of heterostructured ZnO/CuO composites were deposited through spray pyrolysis method by varying the deposition cycles: 50, 150 and 250 designated as S1, S2 and S3 respectively. The physical and chemical characteristics of prepared samples were investigated by using X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), Hall-effect, and Brunauer-Emmett-Teller (BET) analysis. The optimal temperature condition for vapour sensing of S1, S2 and S3 samples was examined for acetone, formaldehyde, acetaldehyde and butanol. The S1, S2 and S3 sample showed better response towards acetone at 350 ˚C than other vapours. Among three samples, S3 showed significant response toward acetone at 350 ˚C. The S3 sample also showed good response and recovery time of 42 s and 28 s respectively which is essential for disease diagnosis. In addition, the acetone sensing mechanism of the ZnO/CuO heterostructure was discussed.