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通过在SnO表面负载钯纳米颗粒制备的具有宽范围耐湿性的高灵敏度一氧化碳传感器元件

Highly Sensitive Carbon Monoxide Sensor Element with Wide-Range Humidity Resistance by Loading Pd Nanoparticles on SnO Surface.

作者信息

Suematsu Koichi, Uchiyama Akihito, Watanabe Ken, Shimanoe Kengo

机构信息

Department of Advanced Materials Science and Engineering, Faculty of Engineering Sciences, Kyushu University, Kasuga, Fukuoka 816-8580, Japan.

Department of Molecular and Material Science, Interdisciplinary Graduate School of Engineering Science, Kyushu University, Kasuga, Fukuoka 816-8580, Japan.

出版信息

Sensors (Basel). 2022 Apr 11;22(8):2934. doi: 10.3390/s22082934.

DOI:10.3390/s22082934
PMID:35458919
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9029052/
Abstract

To develop a highly sensitive carbon monoxide (CO) sensor with a wide range of humidity resistance, we focused on the Pd loading method on SnO nanoparticles and the thickness of the sensing layer. The Pd nanoparticles were loaded on the SnO surface using the surface immobilization method (SI-Pd/SnO) and the colloidal protection method (CP-Pd/SnO). The XPS analysis indicated that the Pd nanoparticles were a composite of PdO and Pd, regardless of the loading method. According to the evaluation of the electrical properties at 350 °C, the CO response in a humid atmosphere and the resistance toward humidity change using CP-Pd/SnO were higher than those using SI-Pd/SnO, even though the Pd loading amount of SI-Pd/SnO was slightly larger than that of CP-Pd/SnO. In addition, Pd/SnO prepared via the CP method with a thinner sensing layer showed a higher sensor response and greater stability to humidity changes at 300 °C, even though the humidity change influenced the CO response at 250 and 350 °C. Thus, the overall design of the surface Pd, including size, dispersity, and oxidation state, and the sensor fabrication, that is, the thickness of the sensing layer, offer a high-performance semiconductor-type CO gas sensor with a wide range of humidity resistance.

摘要

为了开发一种具有宽湿度耐受性的高灵敏度一氧化碳（CO）传感器，我们重点研究了SnO纳米颗粒上的Pd负载方法以及传感层的厚度。使用表面固定法（SI-Pd/SnO）和胶体保护法（CP-Pd/SnO）将Pd纳米颗粒负载在SnO表面。XPS分析表明，无论负载方法如何，Pd纳米颗粒都是PdO和Pd的复合物。根据在350°C下的电学性能评估，即使SI-Pd/SnO的Pd负载量略大于CP-Pd/SnO，使用CP-Pd/SnO时在潮湿气氛中的CO响应以及对湿度变化的抗性也高于使用SI-Pd/SnO时的情况。此外，通过CP法制备的具有较薄传感层的Pd/SnO在300°C时显示出更高的传感器响应以及对湿度变化的更大稳定性，尽管湿度变化在250°C和350°C时会影响CO响应。因此，表面Pd的整体设计，包括尺寸、分散性和氧化态，以及传感器制造，即传感层的厚度，提供了一种具有宽湿度耐受性的高性能半导体型CO气体传感器。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d22c/9029052/c01f1a70af7c/sensors-22-02934-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d22c/9029052/5467c9809837/sensors-22-02934-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d22c/9029052/46d0a7be03c9/sensors-22-02934-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d22c/9029052/1f5d379e7bf9/sensors-22-02934-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d22c/9029052/e0eb771cb778/sensors-22-02934-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d22c/9029052/5fc05937897c/sensors-22-02934-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d22c/9029052/e04bfd8f2f9d/sensors-22-02934-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d22c/9029052/cb4166249cb4/sensors-22-02934-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d22c/9029052/42ff7ad390c9/sensors-22-02934-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d22c/9029052/c01f1a70af7c/sensors-22-02934-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d22c/9029052/5467c9809837/sensors-22-02934-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d22c/9029052/46d0a7be03c9/sensors-22-02934-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d22c/9029052/1f5d379e7bf9/sensors-22-02934-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d22c/9029052/e0eb771cb778/sensors-22-02934-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d22c/9029052/5fc05937897c/sensors-22-02934-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d22c/9029052/e04bfd8f2f9d/sensors-22-02934-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d22c/9029052/cb4166249cb4/sensors-22-02934-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d22c/9029052/42ff7ad390c9/sensors-22-02934-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d22c/9029052/c01f1a70af7c/sensors-22-02934-g009.jpg

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