2020年4月1日 · Herein, a network of curly-edged CoFe-layered double hydroxide (LDH) nanosheets was grown on Ni foam via a one-pot hydrothermal synthesis route. We studied the stepwise morphological evolution and electrochemical performance of CoFe-LDH during variable hydrothermal reaction conditions.

2023年3月1日 · Using a range of characterization techniques including Fourier-transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD) and energy dispersive spectroscopy (EDS), this work discloses the process of replacement of K + by NH 4+ in the interstitial spaces of the CoFe PBA by a hot aqueous urea solution,...

2022年11月1日 · The XPS spectra of Fe 2p (Figure S4) display a complex profile with four spin–orbit doublets, including metallic iron, oxidized iron (II and III), and shakeup satellite peaks in the composite samples. Focusing on the CoFe/NC 30%, the small first peak at lower binding energy (Fe 2p 3/2 ca. 708.2 eV) is

2020年8月11日 · CoFeO@BP中各成分的价态则通过XPS谱图来表征。 钴铁氧化物的非晶结构则可以通过CoFeO@BP中的钴和铁的扩展X射线吸收谱精细结构（EXAFS）谱图得到更充分的证明。 Figure 2. a) Raman spectrum of pure BP and CoFeO@BP nanosheets.

... chemical states of CoFe-LDH/HP, X- ray photoelectron spectroscopy (XPS) was utilized. In the highresolution Co 2p and Fe 2p spectra, Co 2p 1/2 and Co 2p 3/2 peaks were observed at 798.5 and...

In order to analyse the surface chemical structure of the as-prepared samples, X-ray photoelectron spectroscopy (XPS) was performed to monitor the valence of metal elements on the surface of the CoFe V-LDH and Pt@CoFe V-LDH catalysts.

The CoFe 2 O 4 is a superior magnetic material with some characteristics, i.e., a large coercive field, moderate saturation magnetization, excellent permeability, and relatively easy to...

通过物理混合过程设计了具有 S 型异质结机制和骨架结构的二元催化剂 ZIF-67@CoFe LDH。 一方面，原位辐照X射线光电子能谱分析表明，内电场驱动ZIF-67中的光生电子向CoFe LDH移动，形成ZIF-67@CoFe LDH的S型异质结，极大地加速光生载流子的分离。 另一方面，ZIF-67独特的骨架结构为CoFe LDH纳米棒团簇提供了大量的瞄准点，有效地阻止了CoFe LDH纳米棒团簇的聚集。 当 CoFe LDH 对准 ZIF-67 表面时，ZIF-67@CoFe LDH 独特的 3D/2D 结构促进了 ZIF-67 和 …

2023年7月26日 · The changes of valence state, elemental composition and electronic structure of CoFe-LDH electrode were directly observed by XPS measurement. The CoFe-LDH electrode exhibited two Co 2 p 3/2 and Co 2 p 1/2 spin orbital at 781.2 eV and 796.6 eV, respectively (Fig. 2 …

2024年9月25日 · 日前，河北科技大学材料科学与工程学院张少飞课题组和天津大学康建立教授、天津工业大学张志佳教授在Rare metals上发表了题为“In-Situ Constructing Lamella-Heterostructured Nanoporous CoFe/CoFe2O4 and CeO2-x as Bifunctional Electrocatalyst for High-Current-Density Water Splitting”的研究文章，通过自蔓延溶液燃烧（SSC）和低温还原相结合，在泡沫镍上合成了双层纳米多孔CeO2-x/CoFe/CoFe2O4异质结构双功能催化剂。