Near-ambient pressure X-ray photoelectron spectroscopy (NAP-XPS)
Near Ambient Pressure X-ray Photoelectron Spectroscopy (NAP-XPS) is a lab-based equipment which affords the capability of probing surfaces in a realistic, i.e., non ultra-high vacuum environment. Our designed NAP-XPS (SPECS Surface Nano Analysis, GmbH Germany) is equipped with a PHOIBOS 150 Hemispherical Energy Analyzer coupled to a differentially pumped electrostatic lens system. In-situ XPS studies at pressures ranging from 10-10 mbar up to 25 mbar, and temperatures ranging from room temperature to 1000 K.
Besides that, there is a high pressure reaction cell (Dual Signaltech Corp,Taiwan, China) extended to NAP-XPS system. In this cell, the highest gas pressure and heating temperature can reach to 30 bar and nearly 2000 K, respectively.
What can it do?
In the NAP cell
Analysis of solid samples including powder samples in the presence of a gas (or mixture of gases) up to a total pressure of 25 mbar. In addition, Insulating samples are also not allowed. Currently available gases: CO2, H2O, O2, H2, CO, NH3. Other gases may be possibly needed.
Heating of samples from ambient temperature to 1000K during analysis.