| 摘要: | 自組裝聚丙二烯丙胺鹽酸鹽（PAH），聚（苯乙烯磺酸）鈉鹽（PSS），氧化石墨烯（GO）和鈀金屬離子(Pd2+)形成複合薄膜來製備單根棉線H2氣體感測器，再同步(In-situ)使用硼氫化鈉(NaBH4)將複合薄膜還原為Pd/GO/PAH/PSS/PAH多層薄膜，即製成單根棉線H2氣體感測元件。透過SEM觀察Pd/GO/PAH/PSS/PAH多層薄膜表面，可明顯看出Pd薄膜形成在GO膜的表面，此Pd薄膜對於感應H2氣體扮演著重要的因子。由Pd/GO/PAH/PSS/PAH多層薄膜製成的單根棉線H2感測器具有高性能，強反應性，高線性度，良好的穩定性以及在室溫下的高柔韌性。也加以探討以Pd/GO/PAH/PSS/PAH多層薄膜表面所製成的單根棉線H2感測器之H2感測機制。並利用快速傅立葉轉換（FFT）之一階之振幅對應頻率FFT圖及二階之實部值對頻率FFT圖來辨別單根棉線H2氣體感測器是處於彎曲環境下或是濕度環境的情境下之H2感測行為。
A novel single-yarn H2 gas sensor was fabricated by self-assembling the poly(allylamine hydrochloride) (PAH), poly(styrenesulfonic acid) sodium salt (PSS), graphene oxide (GO) and Pd-based complex thin films layer-by-layer on a single yarn and then reducing in-situ Pd-based complex thin film to Pd/GO/PAH/PSS/PAH multilayer thin film. Microstructural observations revealed that Pd thin film formed on the surface of the GO film. Pd thin film played an important role in the response of H2-gas sensing. The single-yarn H2 sensor that was made of Pd/GO/PAH/PSS/PAH multilayer thin film had a high performance with strong response, high linearity, good stability and high flexibility at room-temperature. A reasonable H2 gas-sensing mechanism of the single-yarn H2 gas sensor was proposed. The fast Fourier transform (FFT) was used to discriminate a single-yarn H2 gas sensor upon bending and humidity influence. |
