当前位置: X-MOL 学术Anal. Methods › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
H2-gas sensing and discriminating actions of a single-yarn sensor based on a Pd/GO multilayered thin film using FFT.
Analytical Methods ( IF 3.1 ) Pub Date : 2020-06-15 , DOI: 10.1039/d0ay00834f
Pi-Guey Su,Sheng Lin-Kuo

A single-yarn H2-gas sensor was fabricated by self-assembling 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 in situ reducing the Pd-based complex to a Pd/GO/PAH/PSS/PAH multilayered thin film. The H2-gas sensing properties, effect of bending and humidity influence on this sensor were investigated. The sensor exhibited a high response and good linearity over the range of 1000 to 10 000 ppm of H2 gas. The response of the sensor decreased under both conditions of a bending angle up to 20° and ambient humidity above 50% RH. A fast Fourier transform (FFT) analyzer was employed to disperse the signals of the sensor under the conditions of bending and ambient humidity influence in the presence of H2 gas. Differentiation of the amplitude of FFT from the first-order to second-order frequency spectra effectively increased the discrimination capability of the sensor under the conditions of bending and humidity influence.

中文翻译:

基于FFT的基于Pd / GO多层薄膜的单纱传感器的H2气感测和判别作用。

通过自组装聚丙二烯丙胺盐酸盐(PAH),聚(苯乙烯磺酸)钠盐(PSS),氧化石墨烯(GO)和Pd基复合薄膜来制造单纱H 2气体传感器i-层上的单丝,然后在原位降低基于Pd的配合物,以钯/ GO / PAH / PSS / PAH多层薄膜。研究了H 2气敏特性,弯曲和湿度对传感器的影响。该传感器在H 2的1000至10000 ppm范围内表现出高响应和良好的线性加油站。在最大20°的弯曲角度和高于50%RH的环境湿度下,传感器的响应都会降低。使用快速傅里叶变换(FFT)分析仪在H 2气体存在的条件下,在弯曲和环境湿度影响的条件下分散传感器的信号。在弯曲和湿度影响下,FFT幅度从一阶频谱到二阶频谱的区分有效地提高了传感器的辨别能力。
更新日期:2020-07-16
down
wechat
bug