排序方式: 共有7条查询结果,搜索用时 200 毫秒
1
1.
新型的不锈钢镀Pt(Ir)电极 总被引:1,自引:0,他引:1
应用欠电位沉积与锚定效应,研制了一种新型的不锈钢镀Pt(Ir)电极,此电极具有优越的电化学特性,可望用于微传感器。 相似文献
2.
3.
钴前驱体对掺杂TiO2微结构和可见光催化性能的影响 总被引:1,自引:0,他引:1
为发展可见光下破坏污染物的钴掺杂TiO2光催化剂,以CoCl2、Co(NO3)2和CoSO4为钴前驱体,采用溶胶-凝胶法制备了钴掺杂TiO2,通过X射线衍射、扫描电镜、BET表面积测试和紫外-可见吸收光谱对比研究了钴前驱体对样品的微观结构和吸光性能的影响.同时,以苯胺为降解目标物,比较了样品在可见光下的催化活性.结果表明,样品的TiO2晶相、形貌、比表面积和吸光性能都随着钴前驱体的不同而不同,其中以Co(NO3)2为前驱体制备得到的样品其光催化活性最高,特别是1%掺杂且400℃烧结得到的样品,并简要讨论了其可能原因. 相似文献
4.
5.
6.
In order to develop photoactive cobalt-doped TiO2 for the degradation of organic pollutants using visible light irradiation, the effects of cobalt precursor on TiO2 microstructure were investigated. Three cobaltprecursors, i.e. CoCl2, Co(NO3)2 and CoSO4 with two doping levels (nominally 1% and 10%), and two annealing temperatures (400 and 800 ℃) were adopted to prepare the doped titania through the sol-gel method. The powder samples were characterized with XRD, SEM, BET surface area analysis and UV-Vis absorption spectroscopy, and their photocatalytic activities were evaluated by the degradation of aniline under visible light irradiation. The results showed that the distribution of titania phases, particle size,morphology, surface area and the optical absorption of the catalysts were greatly dependent on the cobalt precursors. Samples prepared from Co(NO3)2, especially for those doped at 1% and calcined at 400 ℃,showed the highest photocatalytic activity towards the degradation of aniline, and the possible reasons are discussed briefly. 相似文献
7.
对电化学还原处理过程中碳纸的形貌和电容的变化进行了研究. 扫描电子显微镜观测结果显示电还原使碳纤维分解为碳颗粒, 并且表面粗糙度增加. 拉曼光谱结果显示ID/IG的比值在还原处理1 min后即出现改变, 表明碳纸无序度增加. BET测试结果显示电还原处理后碳纸的比表面积明显增加. X射线光电子能谱结果表明还原处理后碳纸表面羟基的数量随之增加. 此外, 在-1.6 V下还原5 min后碳纸电容增加到原来的15倍, 并在1500个循环的稳定性测试中保持不变, 显示出良好的稳定性. 相似文献
1