一种新型固体电解质氢敏元件

固体电解质材料氢敏性质的研究报导已有多篇，它们为研制新型的固体电解质氢气传感器提供了新的材料和理论基础．我们以Ce0.95Ca0.05F2.93为固体电解质材料制成的敏感元件，对氧气、氢气、一氧化碳，甲烷、丁烷、乙炔等气体敏感性质进行了研究．结果表明，元件具有良好的氢敏性质．

Pd/V_2O_5薄膜的氢气敏感性质研究

采用磁控溅射法制备了不同厚度的Pd/V2O5双层复合薄膜,采用紫外-可见光分光光度计研究了薄膜的氢气敏感性质,原位测量了薄膜的激光拉曼光谱并分析了薄膜的氢气敏感机理。结果表明,复合薄膜V2O5(280 nm)/Pd(30nm)对氢气的敏感性质较好,对0.01%H2-N2有响应,在4%H2-N2标气中,在560 nm处透过率的相对变化值达到25%。拉曼光谱分析结果表明,Pd/V2O5薄膜在与氢气作用过程中,Pd膜主要起催化作用,氢原子扩散到V2O5层,V5+转变为V4+,导致Pd/V2O5薄膜的透过率发生变化。

Correlation of ^1H NMR Chemical Shift for Aqueous Solutions by Statistical Associating Fluid Theory Association Model

1H NMR chemical shifts of binary aqueous mixtures of acylamide, alcohol, dimethyl sulphoxide (DMSO), and acetone are correlated by statistical associating fluid theory (SAFT) association model. The comparison between SAPT association model and Wilson equation shows that the former is better for dealing with aqueous solutions. Finally, the specialties of both models are discussed.