Sentence examples for existence of oxygen from inspiring English sources

But the existence of oxygen in the comet contradicts some long-held ideas about how the solar system formed.

These phenomena can be attributed to the existence of oxygen vacancies (VO).

The existence of oxygen containing functional groups on GO NSs through chemical treatment confers remarkable optical properties on GO.

Infrared and Raman spectral examinations reveal the existence of oxygen vacancies and local disorder.

They displayed long-wavelength optical absorption due to the existence of oxygen vacancy and Ti3+ defects, and also possibly the surface structural disorder.

We show the existence of oxygen molecules and hydroxyl functional groups, as well as pyridinic nitrogen sites in each graphdiyne sample studied.

Benefiting from the hierarchical structure and the existence of oxygen vacancy, these as-prepared hierarchical brookite TiO2 crystals can not only enhance photocatalytic activity, but also demonstrate their potential in the treatment of superficial malignant tumor.

The lattice defects of TiO2 lead to the existence of oxygen-vacancies and impurity energy levels which make TiO2 respond to visible light.

The existence of oxygen-vacancy-related defect levels in the bandgap and the bandgap reduction caused by these levels were verified by DFT calculated and experiment results.

Electrocatalytic effects observed in HCOOH electrooxidation can be interpreted on the basis that ReO2 may act as a third-body catalyst, preventing or eliminating the strongly bound intermediates that poison the electrode, as well as a bi-functional catalyst facilitating the existence of oxygen-containing species such as OH radicals formed during its oxidation to ReO−4.

Intrinsically, GO is negatively charged when dispersed in water because of the existence of oxygen-containing groups on its surface.