| 查看: 1207 | 回复: 9 | |||
| 当前主题已经存档。 | |||
[交流]
XPS倒底能做什么?
|
|||
| 遇到两个博导,一个说XPS只能定性,不能定量.另外一个把XPS的peak table里的C原子所占比例作为催化剂的积碳量.我很困惑,倒底XPS能说明什么? |
回复此楼» 猜你喜欢
中国水产科学研究院黄海水产研究所博士后科研工作站2026年博士后招收公告
已经有0人回复
-
大连海事大学国家级人才团队2026年博士研究生招生启事（氢能）
已经有10人回复
-
专业论文润色/翻译怎么收费?
已经有261人回复
-
国家级人才课题组招收2026年入学博士
已经有6人回复
-
意大利米兰理工大学急聘CSC公派留学博士生（物理或无机材料科学方向）
已经有47人回复
-
求加氢处理工艺与工程（第二版）pdf 李大东 中国石化出版社 9787511436689
已经有0人回复
-
新加坡ASTAR招收CSC或学校资助联培博士生/访问学生
已经有2人回复
-
求助Amsterdam Density Functional
已经有2人回复
-
Postdoctoral Research Fellow Position in Causal Inference Weill CorneIl Medicine
已经有8人回复
-
武汉纺织大学全国重点实验室陈嵘教授团队招收2026级学术/专业型硕士研究生
已经有0人回复
2楼2008-04-13 16:18:31
pcc2007
金虫 (小有名气)
- 应助: 0 (幼儿园)
- 金币: 968
- 帖子: 238
- 在线: 54分钟
- 虫号: 457374
- 注册: 2007-11-12
- 专业: chemistry/catalysis
3楼2008-04-13 16:40:23
guanyongc
至尊木虫 (知名作家)
- 应助: 5 (幼儿园)
- 金币: 28842.5
- 红花: 2
- 帖子: 7177
- 在线: 597.8小时
- 虫号: 101175
- 注册: 2005-11-12
- 专业: 物理学I
4楼2008-04-13 17:10:47
ElectroWang
铜虫 (小有名气)
- 应助: 0 (幼儿园)
- 金币: 609.4
- 散金: 6
- 帖子: 156
- 在线: 63.9小时
- 虫号: 307253
- 注册: 2006-12-16
- 专业: 常微分方程与动力系统
|
XPS is routinely used to determine: what elements and the quantity of those elements that are present within ~10 nm of the sample surface what contamination, if any, exists in the surface or the bulk of the sample empirical formula of a material that is free of excessive surface contamination the chemical state identification of one or more of the elements in the sample the binding energy (BE) of one or more electronic states the thickness of one or more thin layers (1–8 nm) of different materials within the top 10 nm of the surface the density of electronic states |
5楼2008-04-13 18:45:45
ElectroWang
铜虫 (小有名气)
- 应助: 0 (幼儿园)
- 金币: 609.4
- 散金: 6
- 帖子: 156
- 在线: 63.9小时
- 虫号: 307253
- 注册: 2006-12-16
- 专业: 常微分方程与动力系统
|
Quantitative accuracy: Quantitative accuracy depends on several parameters such as: S/N, peak intensity, accuracy of relative sensitivity factors, correction for electron transmission function, surface volume homogeneity, correction for energy dependency of electron mean free path, and degree of sample degradation due to analysis. Under optimum conditions, the quantitative accuracy of the atom % values calculated from the Major XPS Peaks is 90-95% of the atom % values of each major peak. If a high level quality control protocol is used, the accuracy can be further improved. Under routine work conditions, where the surface is a mixture of contamination and expected material, the accuracy ranges from 80-90% of the value reported in atom % values. The quantitative accuracy for the weaker XPS signals, that have peak intensities 10-20% of the strongest signal, are 60-80% of the true value. |
6楼2008-04-13 18:47:01
ElectroWang
铜虫 (小有名气)
- 应助: 0 (幼儿园)
- 金币: 609.4
- 散金: 6
- 帖子: 156
- 在线: 63.9小时
- 虫号: 307253
- 注册: 2006-12-16
- 专业: 常微分方程与动力系统
★ ★ ★
nxl5096224(金币+3,VIP+0):3Q!谢谢分享！
nxl5096224(金币+3,VIP+0):3Q!谢谢分享！
|
Analysis times: 1–10 minutes for a survey scan that measures the amount of all elements, 1–10 minutes for high energy resolution scans that reveal chemical state differences, 1–4 hours for a depth profile that measures 4–5 elements as a function of etched depth (usual final depth is 1,000 nm) [edit] Detection limits 0.1–1.0 atom % (0.1 atom% = 1 part per thousand = 1,000 ppm). Ultimate detection limit for most elements is approximately 100 ppm, which requires 8–16 hours.) |
7楼2008-04-13 18:47:22
zuozhijun5134
至尊木虫 (文坛精英)
- 应助: 314 (大学生)
- 金币: 15816
- 散金: 2369
- 红花: 14
- 帖子: 10682
- 在线: 303.6小时
- 虫号: 381687
- 注册: 2007-05-24
- 性别: GG
- 专业: 能源化工
8楼2008-04-13 19:30:21
yuncld
木虫 (正式写手)
- 应助: 5 (幼儿园)
- 金币: 2863.2
- 散金: 10
- 帖子: 730
- 在线: 73.9小时
- 虫号: 266711
- 注册: 2006-07-22
- 性别: GG
- 专业: 色谱分析
9楼2008-04-14 12:15:44
huzhun
木虫 (正式写手)
- 应助: 0 (幼儿园)
- 金币: 3168.1
- 散金: 39
- 红花: 2
- 帖子: 412
- 在线: 396小时
- 虫号: 525118
- 注册: 2008-03-14
- 性别: GG
- 专业: 催化化学
10楼2008-04-14 12:32:31