Fluorescence Microscopy of Nanoscale Silver Oxide Thin Films

The experimental conditions for photoactivated intermittent fluorescence from nanoscale silver oxide were studied with fluorescence microscopy.Strong fluorescence was observed from the Ag2O particles with size of 10-20nm excited with both blue and green light .We observed the saturation of Photoexcitation with blue light and explained the experimental results using the model of agglomeration of silver atoms to form small clusters and the fluorescence of Ag2 and Ag3 clusters.     

Cr－Ag／γ－Al_2O_3催化剂在CO氧化反应中Ag的助催化作用

Ｃｒ－Ａｇ／γ－Ａｌ_２Ｏ_３催化剂在ＣＯ氧化反应中Ａｇ的助催化作用陈平，朱波，钟依均，罗孟飞，李少华，吴红丽（杭州大学催化研究所杭州３１００２８）（杭州大学中心实验室杭州）关键词氧化铬，氧化银，氧化铝，负载催化剂，还原特性，一氧化碳，氧化活性催化燃烧...     

5-芳胺-4,7-吲唑二酮的合成

以1,4-对醌、芳肼为原料,通过Aza-Nenitzescu反应、氧化银氧化得到吲唑醌,亲核试剂(各种芳香胺)在Ce3 催化下与吲唑醌发生迈克尔加成反应,得到一系列5-芳氨基基取代的吲唑醌.化合物结构经元素分析、IR及1H NMR证实.初步的生理活性研究表明,这些化合物具有良好的抗哮喘活性.     

锌银电池中氧化银电极的光电化学研究

用光电化学方法研究棒状和多孔氧化银电极在阳极极化过程中的光响应规律可以得到许多信息。最大光响应出现在电极表面的AgO被充分地还原为Ag_2O以及Ag结晶即将生成瞬间, 多孔电极和实体电极开路光电位ΔV_(ph,oc)之比有助于对多孔电极孔结构的了解, 首次观测到n-p-n光响应波形的转化。     

无碱条件下由芳香醛肟和磺酰氯制备O-磺酰基芳香醛肟

在氧化银和碘化钾存在下,磺酰氯与肟室温反应合成一系列O-磺酰基肟.芳香醛肟和酮肟作为底物,产率56%～87%.不过,对硝基苯甲醛肟、脂肪醛肟及α,β-不饱和醛肟作为该反应底物时,没有获得目标产物.     

电极用纳米Ag~2O的电化学性能研究1: 纳米Ag~2O 的制备及表征

用化学方法首次成功地制备出了用于电极活性材料的纳米Ag~2O微粒，并通过TEM，XRD和XPS等测试技术进行了分析表征。同时，对每种方法纳米Ag~2O的生成机理进行了初步的探讨，表明这些方法具有一定的普适意义。     

扣式电池进出口将实施汞含量专项检测

进出口锌－氧化银、锌－空气、锌－二氧化锰扣式电池（下称扣式电池）将于7月1日起实施汞含量专项检测。     

Effects of Rapid Thermal Processing on Microstructure and Optical Properties of As-Deposited Ag2O Films by Direct-Current Reactive Magnetron Sputtering

（111） preferentially oriented Ag2O film deposited by direct current reactive magnetron sputtering is annealed by rapid thermal processing at different annealing temperatures for 5 min. The film microstructure and optical properties are then characterized by x-ray diffractometry, scanning electron microscopy, and spectrophotometry, respectively. The results indicate that no clear Ag diffraction peak is discernable in the Ag2O film annealed below 200°C. In comparison, the Ag2O film annealed at 200°C begins to exhibit characteristic Ag diffraction peaks, and in particular the Ag2O film annealed at 250°C can demonstrate enhanced Ag diffraction peaks. This implies that the threshold of the thermal decomposition reaction to produce Ag particles is approximately 200°C for the Ag2O film. In addition, an evolution of the film surface morphology from compact and pyramid-like to a rough and porous structure clearly occurred with increasing annealing temperature. The porous structure might be attributable to the escape of the oxygen produced during annealing, while the rough surface might originate from the reconstruction of the surface. The dispersion of interference peak intensity in the reflectance and transmission spectra could be attributed to the Ag particles produced. The lowered crystallinity and Ag particles produced induce a lattice defect, which results in an enhanced transmissivity in the violet region and a weakened transmissivity in the infrared region.