Probing the Reaction Mechanism in CO2 Hydrogenation on Bimetallic Ni/Cu(100) with Near-Ambient Pressure X-Ray Photoelectron Spectroscopy

2019 ◽  
Vol 12 (2) ◽  
pp. 2548-2554
Author(s):  
Yinjuan Ren ◽  
Chunyu Xin ◽  
Zhongkai Hao ◽  
Haicheng Sun ◽  
Steven L. Bernasek ◽  
...  
Keyword(s):  
Reaction Mechanism ◽  
Photoelectron Spectroscopy ◽  
Ambient Pressure ◽  
Co2 Hydrogenation ◽  
X Ray

scholarly journals Understanding the Oxygen Evolution Reaction Mechanism on CoOx using Operando Ambient-Pressure X-ray Photoelectron Spectroscopy

2017 ◽  
Vol 139 (26) ◽  
pp. 8960-8970 ◽  
Author(s):  
Marco Favaro ◽  
Jinhui Yang ◽  
Silvia Nappini ◽  
Elena Magnano ◽  
Francesca M. Toma ◽  
...  
Keyword(s):  
Reaction Mechanism ◽  
Oxygen Evolution ◽  
Photoelectron Spectroscopy ◽  
Oxygen Evolution Reaction ◽  
Ambient Pressure ◽  
X Ray

scholarly journals In situ monitoring of the influence of water on DNA radiation damage by near-ambient pressure X-ray photoelectron spectroscopy

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Marc Benjamin Hahn ◽  
Paul M. Dietrich ◽  
Jörg Radnik
Keyword(s):  
Dna Damage ◽  
Radiation Damage ◽  
Photoelectron Spectroscopy ◽  
Ambient Pressure ◽  
In Situ Monitoring ◽  
Strong Increase ◽  
Oh Radicals ◽  
Strand Breaks ◽  
X Ray

AbstractIonizing radiation damage to DNA plays a fundamental role in cancer therapy. X-ray photoelectron-spectroscopy (XPS) allows simultaneous irradiation and damage monitoring. Although water radiolysis is essential for radiation damage, all previous XPS studies were performed in vacuum. Here we present near-ambient-pressure XPS experiments to directly measure DNA damage under water atmosphere. They permit in-situ monitoring of the effects of radicals on fully hydrated double-stranded DNA. The results allow us to distinguish direct damage, by photons and secondary low-energy electrons (LEE), from damage by hydroxyl radicals or hydration induced modifications of damage pathways. The exposure of dry DNA to x-rays leads to strand-breaks at the sugar-phosphate backbone, while deoxyribose and nucleobases are less affected. In contrast, a strong increase of DNA damage is observed in water, where OH-radicals are produced. In consequence, base damage and base release become predominant, even though the number of strand-breaks increases further.

scholarly journals New ambient pressure X-ray photoelectron spectroscopy endstation at Taiwan light source

2019 ◽  
Author(s):  
Chia-Hsin Wang ◽  
Sun-Tang Chang ◽  
Sheng-Yuan Chen ◽  
Yaw-Wen Yang
Keyword(s):  
Light Source ◽  
Photoelectron Spectroscopy ◽  
Ambient Pressure ◽  
X Ray

Ambient Pressure Hard X-ray Photoelectron Spectroscopy for Functional Material Systems as Fuel Cells under Working Conditions

2018 ◽  
Vol 51 (3) ◽  
pp. 719-727 ◽  
Author(s):  
Yasumasa Takagi ◽  
Tomoya Uruga ◽  
Mizuki Tada ◽  
Yasuhiro Iwasawa ◽  
Toshihiko Yokoyama
Keyword(s):  
Fuel Cells ◽  
Working Conditions ◽  
Photoelectron Spectroscopy ◽  
Ambient Pressure ◽  
Functional Material ◽  
X Ray ◽  
Material Systems
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