A quantitative analysis of gallium species (GaO 4 tetrahedra and GaO 6 octahedra) by means of X-ray absorption spectroscopy (XANES and EXAFS) at the Ga K-edge was performed on a series of gallium oxides with various phases and SiO 2 -supported ones.

1997年12月1日 · The present study aims at the quantitative analysis of the coordination of gallium and oxygens in these binary PbO–Ga 2 O 3 glasses by analyzing the Ga K-edge EXAFS spectra. Debye–Waller factors and bond lengths of the Ga–O bonds were also obtained from three glasses with different compositions.

1997年12月1日 · The present study aims at the quantitative analysis of the coordination of gallium and oxygens in these binary PbO–Ga 2 O 3 glasses by analyzing the Ga K-edge EXAFS spectra. Debye–Waller factors and bond lengths of the Ga–O bonds were also obtained from three glasses with different compositions.

2024年7月12日 · Here, we propose an amplifying targeting strategy based on orally administered gallium (Ga)-based liquid metal (LM) nano-agents to efficiently eliminate reactive oxygen and nitrogen species (RONS) and modulate the dysregulated microbiome for remission of IBDs.

Ga K-edge XANES spectra of the Ga2O3/Al2O3 samples showed two peaks assigned to Ga atoms having tetrahedral coordination structure (Ga (t)) and octahedral one (Ga (o)). Curve-fitting...

2006年5月1日 · EXAFS analyses using Ge and Ga K-edge spectra were conducted for (1 − x)(Ge 25 Ga 0.10 S 0.65)–xCsBr glasses (x = 0.00, 0.05, 0.10 and 0.12 in atomic fraction) to investigate changes in local structure around Ge and Ga ions upon CsBr addition.

2016年6月13日 · Edge shifts in Ga K-edge XANES spectra acquired under reaction conditions have long been interpreted as evidence for reduction of Ga (III) to Ga (I). However, a change in oxidation state is not the only factor that can give rise to a change in the XANES spectrum.

The activation of a dimethylgallium/ZSM-5 precursor to well-defined reduced and oxidized species is studied by in situ Ga K edge XANES. The precursor is prepared by chemical implanting of trimethylgallium on acidic HZSM-5. Subsequent reduction leads to …

O K-edge XANES are convincing the decreased electron density in the outermost hybrid orbits of O 2p and Ga 4p, and the move... We report structural, dielectric, and ac conductivity studies of...

为了更好地了解工作催化剂的xanes光谱，我们合成了一系列分子模型化合物和接枝的表面有机金属ga物种，并将它们的xanes光谱与在还原条件下获得的镓基催化剂的xanes光谱进行了比较。