2019年7月23日 · Powder X-ray diffraction (XRD) is a common characterization technique for nanoscale materials. Analysis of a sample by powder XRD provides important information that is complementary to various microscopic and spectroscopic methods, such as phase identification, sample purity, crystallite size, and, in some cases, morphology.

The biosynthesized Au and Ag NPs were characterized by UV-visible spectroscopy (UV-vis), Fourier transform infrared spectroscopy (FTIR), powder X-ray diffraction analysis (XRD) and transmission...

2020年6月19日 · 实际上Au和Ag在同一族，都是FCC结构，只是原子大小的差异，因此XRD衍射峰非常类似，差异性极小。 在完全不知道组成的情况下只通过Jade来断定物质的组成是武断的，一定要跟其他表征结果结合起来。

2021年3月31日 · The PXRD pattern of PtCo–Au 1.5 NWs shows two distinguishing sets of diffraction peaks attributing to PtCo alloy and Au cluster, respectively, confirming that the deposited Au atoms exist separately on the surface of PtCo NWs. After annealing, the diffraction peaks of PtCo-T NWs behave higher intensity and a positive shift relative to that of ...

Powder X-ray diffraction is a technique to assign the crystalline phase of solids. Important information such as degree of crystallinity, mean crystallite size, estimation of the amorphous phase, cell parameters, lattice defects, favorable orientation planes, and even the position of all atoms, bonds, and angles, can be obtained from powder XRD.

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。

2021年4月9日 · We called our new method 4D-STEM/PNBD (Powder NanoBeam Diffraction) and applied it to three different systems: Au nano-islands (well diffracting nanocrystals with size ~20 nm), small TbF3 nanocrystals (size < 5 nm), and large NaYF4 nanocrystals (size > 100 nm).

A novel green synthetic route developed toward unveiling a mechanism of formation of single crystalline gold (Au) nanoplates, with a flat surface using an aqueous extract of red beetroot waste...

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.

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。