2020年4月1日 · For MoP@NPCS, peak deconvolution of the XPS Mo 3d spectrum (Fig. 3 c) exhibits the typical peaks centered at 231.1 and 234.8 eV, 232.2 and 235.9 eV, which can be ascribed to Mo 4+ and Mo 6+, respectively, in the molybdenum oxides species caused

2016年10月1日 · In this work, we propose a novel and cost-effective catalyst, molybdenum diphosphide (MoP2) three-dimensional porous structural nanoparticles with superior activity towards the hydrogen evolution reaction (HER).

2021年2月2日 · X-ray photoelectron spectroscopy (XPS) measurements were conducted to analyze the chemical composition and state of the MoP@NC composites. The XPS survey spectra of various MoP@NC composites (Figure 2a) …

2021年10月21日 · Here, we propose an electrochemical surface restructuring strategy to design synergistically interactive phosphorus-doped carbon@MoP electrocatalysts for the HER. A simple electrochemical cycling method is developed to tune the thickness of the carbon layers that cover on MoP core, which significantly influences HER performance.

2020年4月1日 · The molybdenum phosphide (MoP) nanoparticles supported by phosphorus and nitrogen co-doped carbon nanosheet (N, P–C) have been prepared through simple one-step calcination method.

2018年10月17日 · From the XPS spectra, the phosphorus-to-molybdenum stoichiometric ratio (P:Mo), as estimated from the respective integrated peak area of XPS spectra, is close to 1:1. To explore the growth mechanism of the ultrathin films, the growth process was systematically investigated at different temperatures and reaction durations.

The high-resolution XPS spectra of original bulk MoS 2 (Fig. 5a) exhibits two obvious peaks at 229.4 and 232.6 eV, which belong to the Mo 4+ 3d5/2 and Mo 4+ 3d3/2 com- ponents of 2H-MoS 2 ...

X-ray photoelectron spectroscopy (XPS or ESCA) curve fitting procedures, reference materials and useful notes are listed here to provide a starting point for the consistent interpretation of XPS spectra. These reference pages contain tips and techniques that are designed to help both the novice and advanced XPS user.

2022年1月9日 · X­-ray photoelectron spectroscopy (XPS) measurements were applied to analyze surface chemical compositions of as-prepared samples. The survey spectra show that the Mo, O, C, and P elements all exist in meso-MoO 2 /MoP-NBs, meso-MoP-NBs, and meso-MoO 2-NBs samples (Figure S5a, Supporting Information), which match well with EDX mapping and ICP data.

The X-ray photoelectron spectroscopy (XPS) analysis showed that the Mo dopant has mixed oxidation states of + 4 and + 6.