KOH-treated and electrochemically reduced polyaniline films has been examined by a high-resolution XPS technique. The deconvoluted core level C 1s and N 1s XPS lines show clear evidence of the existence of imine, amine and multiple charged states of N, which can be conveniently explained by ...
a TEM image of CDs (inset, particle size distribution of CDs); b high-resolution TEM image of CDs; c−f: full scale XPS spectra, high-resolution C 1s, N 1s, and O 1s XPS spectra of CDs; g, h one-photon and two-photon fluorescence (FL) spectra of protonated CDs in deionized wa...
b High-resolution N 1s XPS spectra of Ti3C2Tx/Na3TCM (top) and Ti3C2Tx (bottom); insets in bottom show the schematic illustration of N functional groups. c Pore size distributions of Ti3C2Tx/Na3TCM and Ti3C2Tx; inset shows the nitrogen adsorption–desorption isotherms. d Top-view SEM ...
A,BScanning electron microscopy (SEM), (C,D) transmission electron microscopy (TEM), (E,F) high resolution TEM (HRTEM) images, and, (G,H) corresponding selected area electron diffraction (SAED) patterns of the oxidized (control; top row:A,C,E,G) and SRBW-recovered (bottom row:B,D,...
High resolution XPS analysis of chemical functionalised multi-wall carbon nanotubes (MWCNTs) and single wall carbon nanotubes (SWCNT) was done with ESCA300 (overall instrument resolution of 0.35 eV). Information to the degree of functionalisation was ascertained by argon ion bombardment of the ...
In the N 1 s high-resolution spectrum (Fig. 3a), four deconvoluted subpeaks at 398.1, 399.7, 401.0 and 402.9 eV belong to pyridinic N, pyrrolic N, graphitic N and oxidized N, respectively [41, 42]. Doping N atoms into the carbon framework can induce a relatively high positive charge ...
The chemical state and molecular environment of the Si/CNT@C sample are further characterized by XPS spectra. As shown inFigure 3a, the signals of Si 2p (102.9 eV), C 1s (285.5), and O 1s (533.0) can be observed in XPS survey spectrum of the Si/CNT@C. The high-resolution XPS spe...
Samples MnAl-LDO (CP) MnAl-LDO (FNP) BET Surface Area (m2/g) 169 121 Pore Volume (cm3/g) 0.37 0.22 Pore Size (nm) 8.77 7.13 The high resolution TEM (HR-TEM) images of these catalysts (Figure 2a,b) showed abundant irregular spots on the surface of the MnAl-LDO (FNP) catalyst...
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- do not need high resolution analyzer (concentric hemispherical analyzer - CHA) - do need good (angular) collection efficiency CEM 924 10.16 Spring 2001 Cylindrical Mirror Analyzer (CMA): - Single or double-pass (higher resolution) - Large angular acceptance - Often contain integral electron gun...