2024年1月8日 · The transformation of CoO to Co 3 O 4 at 200 °C was detected by PXRD, although the phase transition for bulk CoO is reported to start at 400 °C. 49 Since this transition can only occur by oxygen diffusion in the solid state, it is strongly influenced by the surface-to-volume ratio and is therefore expected to be much faster for small ...

2024年3月11日 · Findings from the characterization via PXRD and TEM clearly indicate the formation of Co-CoO core-shell nanostructure with a variation in silica coating, leading to creation of a variation in volume fraction/interparticle separation/interparticle interaction.

Finely dispersed Co (0) and CoO species were efficiently loaded into a stable metal-organic framework to impart catalytic activities to the porous solid. The metalation of the MOF host is...

2023年5月1日 · However, the compositions show a discrepancy between results from STEM-EDS (CoO:NiO = 91:9) and PXRD (CoO:NiO = 70:30) measurements when N 2 is used. The quantitative determination of phase and element ratios by PXRD is hindered by small particle size, resulting in broadened peak widths, as well as by the limited number of reflections and ...

2025年3月7日 · Powder X-ray diffraction (pXRD) experiments are a cornerstone for materials structure characterization. Despite their widespread application, analyzing pXRD diffractograms still presents a significant challenge to automation and a bottleneck in high-throughput discovery in self-driving labs.

2022年9月15日 · The H 2 -reduction of Co 3 O 4 is shown to occur via five events involving removal of weakly bound surface oxygen species (at 493–680 K), reduction into CoO (703–798 K), reduction of the thus formed CoO into hexagonal and/or cubic crystallites of Co0 via formation (and subsequent reduction) of charged Co 5O clusters (853–1100 K), whose ...

Nano-structured Co3O4 thin film are synthesized by dip coating and their structural, surface, optical and magnetic properties have been studied. The X-ray diffraction of film shows that the...

PXRD准确度高，分辨能力强，可通过给出晶胞参数 (如原子间距离、双面夹角等)确定药物晶型与结构，可用于鉴别晶态与非晶态、混合物与化合物的定性分析。

粉末X射线衍射 （PXRD）作为一种非破坏性分析技术，因其高效、准确和灵敏的特点，广泛应用于药物晶型的鉴定和分析。 PXRD通过测量X射线与药物粉末样品之间的衍射模式，能够提供关于晶体结构的详细信息。 本篇文章将深入探讨PXRD在药物晶型鉴定中的关键作用，同时，我们将介绍PXRD的工作原理及其在药物晶型分析中的应用实例，并向大家推荐我们的表征检测服务内容（薇：jia009077）。 1.什么是药物晶型？ 药物晶型是指药物分子在固态下的不同排列方式， …

Download scientific diagram | a PXRD patterns, and b FTIR of CoO/Ce2O3@UiO-66-NH2, TiO2/Ce2O3@UiO-66-NH2, Ce2O3@UiO-66-NH2, and UiO-66-NH2 from publication: Functionalization of UiO-66-NH2 by...