Facile preparation of fullerenol-based humidity sensor with highly fast response
Facile preparation of fullerenol-based humidity sensor with highly fast response
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DOI：
10.1080/1536383x.2023.2255317
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发表时间：
2023-09
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通讯作者：
Xingshun Wu;Huimin Wu;Fei Jin;Hong-liang Ge;F. Gao;Qiong Wu;Song Wang;Y. Wang;Hua Yang-Hua-Y
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文献类型：
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作者：
Xingshun Wu;Huimin Wu;Fei Jin;Hong-liang Ge;F. Gao;Qiong Wu;Song Wang;Y. Wang;Hua Yang-Hua-Y
摘要作为富勒烯类化合物的典型代表，富勒烯醇类化合物在生物医学、吸附、传感器检测等领域有着广泛的应用。本文对商品富勒烯醇类化合物的结构和组成进行了研究，结果表明碳笼表面含有丰富的亲水基团，可以促进水分子的吸附。结果表明，在相对湿度为11-97%的范围内，富勒烯醇包覆的湿敏元件具有较快的响应(19s)/恢复时间(12s)和较低的滞后(ΔH≈2.68%RH)。阻抗信号的变化机理是由于水分子吸附形成离子所致。在空气中长时间暴露后仍保持着良好的重复性和稳定性，显示出巨大的应用潜力。
Abstract As a typical representative of water-soluble fullerene derivatives, fullerenols have been widely used in biomedicine, adsorption, and sensor detection. This paper has studied the structure and composition of commercial fullerenols, which indicate abundant hydrophilic groups exist on the surface of carbon cages to promote the adsorption of water molecules. It is found that the humidity sensor coated with fullerenols has a fast response (19s)/recovery time (12s) and low hysteresis (ΔH ≈ 2.68%RH) at the relative humidity level of 11–97%. The change mechanism of the impedance signal is due to the ions’ formation caused by the adsorption of water molecules. Excellent repeatability and stability are still maintained after a long time of exposure in the air, which displays great application potential.