Topic
Oxygen
About: Oxygen is a research topic. Over the lifetime, 48149 publications have been published within this topic receiving 1113788 citations. The topic is also known as: O & Oxygen.
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230 citations
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TL;DR: In this article, the rate constants for some environmentally important organic model compounds reacting with singlet oxygen in water have been determined in laboratory experiments using rose bengal as a sensitizer.
229 citations
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TL;DR: In this article, the relation between the kinetics of the oxygen reduction and the reduction of the rust layer was analyzed and it was shown that oxygen is predominantly reduced within the rust scale and not at the metal/electrolyte phase boundary.
229 citations
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TL;DR: In this article, the effects of doping noble metal onto RE 0.6 Zr 0.4-x Y x O 2 (RE = Ce, Pr; x = 0.05) solid solutions have been investigated using X-ray diffraction (XRD), temperature-programmed desorption (TPD), temperatureprogrammed reduction (TPR), O 2 -H 2 and O 2-CO titration, 18 O/ 16 O isotope exchange, CO pulsing reaction, and XPS techniques.
229 citations
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TL;DR: In this paper, a self-doped SrTiO3−δ was prepared through a carbon-free one-step combustion method followed by a series of heat treatments in Ar at temperatures ranging from 1200 to 1400 °C.
Abstract: Self-doped SrTiO3−δ was prepared through a carbon-free one-step combustion method followed by a series of heat treatments in Ar at temperatures ranging from 1200 to 1400 °C. X-Ray Photoelectron Spectroscopy (XPS), Electron Paramagnetic Resonance (EPR) and High-Resolution TEM confirm the presence of Ti3+ in samples with oxygen vacancy accommodated in perovskite by forming Ruddlesden–Popper crystallographic shears. The UV-vis spectra and electronic structure calculations show that the oxygen vacancy and Ti3+ together induce an in-gap band to enhance the visible light absorption. Pulsed Adsorption of CO2 and Temperature Programmed Desorption (TPD) experiments show that the higher oxygen deficiency tends to improve the chemical adsorption of CO2 on the surface as well as in the bulk of SrTiO3−δ, especially the accommodation of CO2 molecule in the oxygen vacancy. It is the synergetic effect of visible light absorption and chemical adsorption of CO2 that improves the artificial photosynthesis to generate hydrocarbon fuels from CO2/H2O under visible light irradiation. We also demonstrated that the incorporation of oxygen from CO2/H2O into the oxygen vacancy of SrTiO3−δ leads to the absence of oxygen evolution which therefore results in the oxidation of SrTiO3−δ (Ti3+ → Ti4+).
229 citations