
(a) X-ray diffraction (XRD) patterns of Pt, Pd and PdPt …
Indexing XRD patterns correspond to the face-centered-cubic (FCC) lattice of Pt (JCPDF 04-0802), Pd (JCPDF 46-1043) and PdPt alloy (JCPDF 65-6418) structures. ... ... analysis of the position...
mp-126: Pt (cubic, Fm-3m, 225) - Materials Project
Pt is Copper structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Pt is bonded to twelve equivalent Pt atoms to form a mixture of edge, face, and corner-sharing PtPt12 cuboctahedra. All Pt–Pt bond lengths are 2.81 Å.
X-ray-diffraction characterization of Pt(111) surface ... - Nature
2005年8月21日 · Surface X-ray diffraction (SXRD) 13 gives access to this important and complementary information providing a detailed structural description of the...
X-ray diffraction reinvestigation of the Ni-Pt phase diagram
2022年1月25日 · The decomposition of the /Ni-Pt/ precursors with different component ratios and formation of alloy phases were studied in situ using high-temperature XRD to select conditions for the synthesis of Ni-Pt nanoalloys.
X-ray diffraction (XRD) patterns of 40 wt% Pt/C catalysts.
In this study, we prepared carbon-supported hollow PtNix (x = the moles of the Ni precursor to the Pt precursor in the catalyst preparation step) catalysts using a one-step preparation method ...
为啥XRD观测不倒Pt的衍射峰? - 催化 - 小木虫 - 学术 科研 互动社区
小弟将Pt负载在Fe2O3上,Pt的质量分数为2.3%,粒径分布80%为2nm及以下,20为大粒径Pt(4~14nm),但xrd只有Fe2O3的峰而没有Pt的。 理论上2nm以上的晶体都可以观测到的哇……谢谢大家啦!
Probing metal substrate interaction of Pt nanoparticles: Structural XRD ...
2010年4月1日 · Platinum nanoparticles were selectively deposited on titania via a photochemical method. The structural studies via XRD in the as prepared and heat-treated samples were evaluated and compared to the substrate without oxide. A metal nanoparticle–oxide interaction, which is favorable for electrocatalysis, is observed. 1. Introduction.
X-ray diffraction (XRD) patterns of (a) Pt/C and (b) Pt/STA-C.
XRD patterns obtained for Pt/C and Pt/STA-C com- posites are shown in Figure 6. The XRD patterns repre- sented the diffraction peaks of (111), (200), (220), and (311) planes, typical...
复旦大学赵东元院士&武汉理工大学苏宝连院士、刘勇教授团队IM:用于促进氧还原的枝状Pt …
2024年12月27日 · 本研究通过几何结构工程的方法,设计并制备了一种新型的Pt-Pd枝状纳米管异质结构(DTHs),以提高催化剂的活性和稳定性。 复旦大学赵东元院士&武汉理工大学苏宝连院士、刘勇教授团队选用了一维钯纳米线(Pd NWs)作为牺牲模板,并通过控制L-抗坏血酸(AA)与 [PtCl4]2−的还原反应,以及Pd与Pt之间的原电池置换反应,成功制备了三种不同的Pt-Pd双金属DTHs催化剂。 这三种催化剂分别为:具有致密Pt纳米枝晶的Pt4Pd DTHs、较短Pt …
【Science】:通过原子捕获法实现热稳定的铈基铂单原子催化剂_pt xrd …
2024年2月17日 · 然而,当这些催化剂在空气中在800℃下老化时,可通过X射线衍射(XRD )检测到大的结晶Pt颗粒形成。 Pt 的 XRD 衍射峰完全不存在,表明样品仅含有原子分散的物质,这可以通过反应活性测试、能量色散谱 (EDS)、像差校正扫描透射电子显微镜 (AC-STEM) 和漫反射红外傅里叶变换光谱(DRIFTS)来证实。 采用不同暴露晶面的二氧化铈粉末能够确定捕获 Pt 的最有效的表面。 二氧化铈可以被合成为明确的形状,具体为纳米棒、 立方体 和八面体。 八面体和 …
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