EPA's Environmental Sciences Division, Mass Peak Profiling from Selected Ion Recording Data (MPPSIRD) and a Profile Generation Model (PGM), utilize high resolution mass spectrometry to determine elemental compositions of molecular and fragment ions. These tools provide structural details of m...
(5.7%);通过b图的O 1s XPS图谱可以发现三个含氧官能团,C=O,C-O-C,C-OH,c图给出了这三个官能团的分别占比,d图的C 1s发现三种含C基团,C=C, C-O-C/C-N, C=O,其中C-O-C/C-N这个基团具有很大的peak,说明这个基团占比很大;e图的FTIR进一步验证了Co-N2-C/HO结构中的含氧官能团比例很高;f图...
(Princeton Applied Research). All spectroscopic measurements were collected with 4 cm−1resolution and at least 128 coadded scans using a FTIR spectrometer (Nicolet iS50, Thermo Scientific) equipped with a liquid nitrogen-cooled MCT detector. Nuclear magnetic resonance spectra were collected on ...
A mathematical model, which operates by iterative computer calculations, has been constructed to simulate the complex changes in isotopic peak patterns which arise in the irradiated solid mixture. The simulations show that the observed isotopic exchange is not random, but rather that an individual ...
Thermogravimetric analysis (TGA) of the sample was performed on a Perkin-Elmer TG-7 analyzer heated from room temperature to 800 °C in flowing N2/O2with a heating rate of 10 °C/min. Fourier transform infrared spectroscopy (FTIR) was recorded in the range of 4000–400 cm−1on ...
Initial hydration steps in lipase studied by means of water sorption isotherms, FTIR spectroscopy and thermally stimulated depolarization currents The role of water in lipases, a class of proteins endowed with a large external hydrophobic surface, is not yet fully understood. To analyse the water-rel...
(B) Bar columns of current densities of peak A normalized by the Au loadings for the same catalysts. Fig. 7 presents the electrochemical oxidation processes of borohydride onto the bare Pt electrode, Ni/Ti and PtNi/Ti (a), Co/Ti and PtCo/Ti (b), and Cu/Ti and PtCu/Ti (c) ...
A new ruthenium complex containing bidentate xanthate ligands was synthesized in a good yield. This complex was characterized by elemental analysis, proton nuclear magnetic resonance( 1 H NMR), Fourier transform infrared( FTIR ) and UV-Vis spectroscopies. The cyclic voltammetry of the complex revealed...
in situ ATR‐FTIRXPS depth profilingPd/C, Au@Pd/C (core锕昲ell) and AuPd/C (AR consisting in Au microparticles), were used as electrocatalysts for ethanol oxidation in alkaline medium. A synergistic effect between Au and Pd atoms in Au@Pd/C makes the binding between ethanol and Au@Pd/...
NO−C2H4 interactions on the surface of stepped Pt(332) have been studied using Fourier transform infrared reflection−absorption spectroscopy (FTIR-RAS) and thermal desorption spectroscopy (TDS). IR data show that pre-dosed C2H4 molecules suppress the adsorption of NO on the surface of Pt(332...