另外,所述Ni/NiO-3.8也表现出稳定的催化析氢性能(图3i)。 ▲Figure 3.Spectroscopic characterizations and electrocatalytic performance for HER.(a) XRD patterns, (b) Raman spectra, and (c) High-resolution Ni 2p XPS spectra...
此外,Fe3+的掺杂和磷酸根的修饰没有明显改变催化剂的纳米片状形貌。 Figure 1. Composition, structure and morphology of various prepared electrodes. (a) Raman spectra. (b) Ni 2p XPS spectra of Fe:Ni/Ni(OH)2and Ni/Ni...
Pt-O-Ni结构和Ov的存在可以优化Pt2/Ni(OH)2/NF的电子结构,增强金属-载体间的相互作用,保证碱性海水裂解中活性位点的稳定性。 Fig. 2. XPS spectra of (a) Ni 2p, (b) Pt 4 f, (c) O 1 s. (d) EPR spectra. 要点三: 研究了Pt2/Ni(OH)2/NF在碱性海水中的HER性能。HER过电位仅76 mV(100 ...
在共聚的过程,溶液的碱性以及多齿配体的空间位阻对镍物种的种类影响较大,而碱性越强同时空间位阻越小的配体更易形成具有强还原性的镍硅酸盐。 ▲Figure 3. The profiles of Ni 2p XPS spectra: (a) fresh catalysts and (b) spentcatalysts. (c) Comparison of Ni K-edge k3-weighted EXAFS data for redu...
High-resolution (c) Ni 2p and (d) P 2p XPS spectra of Ni(OH)2/NiFeP catalyst before and after Ar+ sputtering to remove surface oxidation layer. 如图2所示,NiFeP催化剂的表面在HMFOR反应结束后转变为了Ni(OH)2,基于TEM与XPS分析,Ni(OH)2层的厚度在10 nm左右。催化剂内部的NiFeP部分并没有被...
The strong interaction between Ni and TiO2 in 10Ni/TiO2-OH was further verified by the following quasi in situ XPS, in situ infrared spectra (IR), and in situ near ambient pressure (NAP) near edge X-ray absorption fine structure (NEXAFS). From the Ni 2p XPS spectra (Fig. 5b), the ...
The Ni-2p high-resolution XPS spectrum is shown in Fig. 2e. The Ni-2p spectrum contains two main peaks Ni-2p1/2 and Ni-2p3/2 due to spin-orbit coupling [40]. Both Ni0 and Ni2+ peaks clearly contribute to the spectra. The Ni-2p XPS spectrum shows two peaks at 853.8 eV, and ...
As shown in the XPS survey spectra (Fig. 4a), besides the Ni, C and N elements, new signal peak positioned at 133 eV corresponding to P element after phosphidation process. The high resolution Ni 2p XPS spectrum of Ni-MOF displayed four prominent peaks (Fig. 4b), the two ...
MOF and Bi/Ni-MOF. (c) FT-IR spectra of Ni-MOF and Bi/Ni-MOF nanostructures. (d) Survey scan XPS spectra of Ni-MOF and Bi/Ni-MOF. (e) Ni 2p XPS spectra of Ni-MOF and Bi/Ni-MOF. (f) O 1s XPS spectra of Ni-MOF and Bi/Ni-MOF. (g) Bi 4f XPS spectra of Bi/Ni-MOF...
Fig. 6.In situ Raman Spectrum measurements of (a) Co3O4, (b) Ni-Co3O4and (c) NdNi-Co3O4for OER in 1 M KOH, (d) comparison of the ν(Co-O) Raman peak intensity of the catalysts. (e) XRD patterns a...